"There were these stones, and if you place them in one of several recesses around the outside of the device, it activates it, and allows you to connect with someone far, far away—across the galaxy, inter-galactically even..."
Rodney McKay[src]

The long-range communication device is a two-way communication device which creates a psychological and physiological link between the users on each end, swapping their minds into each other's bodies. It was originally created by the Alterans millions of years ago, before they left their home galaxy. A variant of the original was put into use by the Tau'ri sometime around 2009.


The long-range communication device is used in conjunction with the Long-range communication stones. When the stones are attached to the device, they create a link with the nearest active communication stone, allowing the user to take control of the person to whom the stone is linked and vice versa. As long as the link is active, the user controls the recipient's body as if it were their own. (SG1: "Avalon, Part 2")

The device, thus far, has no known limit to its range; it can function seamlessly over billions of light years. It is able to establish a two-way link over intergalactic distances without the aid of a second communication device on the other end. For example, a communication device activated by Neeva Casol in the Pegasus galaxy was able to create a two-way link between her and Dr. Jennifer Keller, despite Keller not having used a communication device in return, and likewise Colonel Everett Young was able to swap with a Nakai with the use of a single device. However, the device appears to be unable establish a two-way link when Dr. Daniel Jackson and Vala Mal Doran used one to connect to the Alteran Home Galaxy; the couple they connected to were not switched in return until a second device was briefly engaged. When it was disabled, the connection back to Earth was severed. It is possible that Earth-side device was damaged or there were safety protocol preventing the two-way link from being established. (SG1: "Origin", SGA: "Identity", SGU: "Air, Part 1", "Space")

Once a link is formed between two individuals, it cannot be severed until the stones are removed or power to one or both devices is cut off. The Alteran version of this device will maintain a one-way connection without a companion device, while the Tau'ri version will disable the connection on both ends if either side loses power. (SG1: "Origin", SGU: "Earth")

The device establishes a physiological link as well as a mental one, linking the well-being of those using the device. Extreme sensations such as suffocation or burning will be shared, and if one body dies the other will die with it; if the body that died is revived after death, the other is too. However, the minds of the people killed can become trapped in the stones and under certain circumstances connect with someone using the stones and temporarily take over their bodies. The device does not share every sensation. For instance, if a person were to become intoxicated while the device is active, they would only be affecting the host body of their partner; if the device were to be deactivated or disrupted while that person is intoxicated, the user would find him/herself sober in the original body, leaving the other user to feel the effects of intoxication. This is also true of injuries such as broken bones, as when MSgt. Ronald Greer broke his leg during the Lucian Alliance attack on Earth, the person he had swapped with was unaware of the injury.(SG1: "Origin", SGU: "Earth", "Incursion, Part 1", "Malice", "Hope")

Daniel Jackson believed that the device was able to translate from Ancient to English based on his first experience with it, though later events show that the Ori followers whom they communicated with speak English. When Everett Young used the device and swapped with a Nakai, he could not comprehend their language, which uses clicks and screeches, nor could he communicate in his own tongue. (SG1: "Avalon, Part 2", "Origin", SGU: "Space")

Original Alteran device[]

The original Alteran long-range communication device has a hemisphere-shaped base about two feet in diameter with a crystalline spire coming from the center. There are eighteen communication stone slots spaced equally around the base. When active, the spire turns blue. While the specifics of the device is unknown, what is known is that the device draws power from subspace. Once activated, the device is impossible to shut off; it has no "off switch" and any stones attached to it are locked in place. The only known method the Tau'ri have for disabling the link is to destroy the device. A Prior has been shown to be able to deactivate the device without the need for violence using his powers, suggesting that the Ancients used their own powers in a similar manner. (SG1: "Origin")


Long-range communication device 1

Neeva Casol activates a communication device

The first encounter the Tau'ri had with a device was through the communication stones found by Brigadier General Jack O'Neill and Joe Spencer. Their possession of the two stones created a weak psychic link between them, which activated in proximity of the stones. Later on, the communication device was discovered in Avalon. Realizing that the stones interfaced with the device, Dr. Daniel Jackson and Vala Mal Doran used it in hopes of meeting non-ascended Ancients living in another galaxy. Instead, they linked to Harrid Cicera and Sallis Cicera, heretics who had discovered a similar device outside Ver Eger. The device found in Avalon was destroyed when Lt. Colonel Cameron Mitchell and Teal'c threw it into the unstable vortex of an activating Stargate. The device in Ver Eger was taken to Celestis to be destroyed, but Seevis' contacts in Celestis smuggled it out to Ver Isca before that could happen. Vala, while stranded in the Ori home galaxy, used it to link to Daniel and warn Earth of the impending Ori invasion; however, the device was rendered useless when Tomin shot it with his staff weapon. (SG1: "Avalon, Part 2", "Origin", "Crusade")

Long-range communication device 2

Mckay interfacing with the device

In 2008, the Atlantis expedition had an encounter with one of these devices. Neeva Casol activated one while stealing artifacts from a village, switching with Dr. Jennifer Keller, who was the last person to touch the related Long-range communication stone in Janus' lab. To restore them both to their proper bodies, Ronon Dex shot the device with his particle magnum, disabling it. (SGA: "Identity")

Ori long-range communication[]

Though the Ori have not been shown to build a physical version of the long-range communication device, a Prior has shown to be able to duplicate the effect using their powers (likely in conjunction with their staff). A Prior in the Milky Way demonstrated this with Gerak, bringing both himself and Gerak to Celestis, whereupon Gerak was converted to a Prior himself. It's not shown if their bodies were being controlled by someone else during the exchange. (SG1: "The Fourth Horseman, Part 1")

Tau'ri device[]

Long-range communication device 2

The Tau'ri variant.

The Tau'ri, despite not understanding the technology completely, have managed to construct their own version of the device. This variant is much smaller and box-shaped. The top of the device has a flat panel with five intersecting rings, where the stones can be placed. When a communication stone is placed in one of the five rings, the panel lights up and the link is established. There is also another, smaller variant that holds only a single stone. (SGU: "Air, Part 2", "Divided", "Seizure")

The Tau'ri version of the device has the advantage of being easy to shut off, in contrast to the original which must be disabled or destroyed (if only due to their lack of understanding in how it operates). It comes with a removable power cell, allowing the user to break the connection at will. Alternatively, since the stones are placed on a flat panel and not attached in any way, they can simply be picked up to break the link. The person doing so tends to use gloves or other cover for their hands while doing so, presumably to keep the stone from imprinting on them. (SGU: "Earth", "Space", "Subversion")

Unlike the original, outside factors have been shown to disrupt the link to various degrees. Destiny's Faster-Than-Light engine creates a subspace disruption when engaged or disengaged, breaking the link for a few seconds. The Nakai mind probe will sever the link if used on one of the two users, preceded by a bout of severe pain in the subject. Intense weapons fire directed at Destiny's shields from several Nakai motherships has also severed the link. When a Nakai that had handled a stone was killed moments before an attempted connection, Colonel Everett Young, who had connected to the alien twice before, was unable to connect to anyone, including Earth. The connection to Earth was eventually restored. Other factors can affect the stones, such as Stargate travel over intergalactic distances. High levels of radiation on one end of the connection can also affect it, preventing it from being severed when the stones are removed or even when the base is turned off, but this can be bypassed so the connection can be broken. (SGU: "Earth", "Space", "Divided", "Incursion, Part 1", "Alliances")

Another effect of the device not shown with the Alteran version is the transfer of traces of memory from the host body, which can be experienced in the form of brief visions or dreams. This is likely a side effect of the host being exposed to Goa'uld brainwashing technology, as it does not occur under normal circumstances. This version has also been shown to be able to connect to a completely alien species, namely the Nakai, provided they have an active stone. (SGU: "Life", "Space", "Subversion")

The device is also able to clear the imprints on stones, rendering them inert until they are imprinted by another person. If the imprint is not cleared, the stone will remain active despite not being place on the panel. The Nakai used their stone a second time to exploit this, connecting with Lt. Vanessa James. This presumably worked because Destiny's communication device was active at the time. (SGU: "Sabotage")


The Tau'ri first tried to emulate the technology through the use of a modified Tok'ra subspace receiver. By 2009, they had developed a functional version. At least one device was stationed at Icarus in anticipation of traveling through the Stargate to the nine-chevron address. When the base came under attack by an unknown force, an evacuation was immediately underway. However, rather than dial Earth, Dr. Nicholas Rush dialed the ninth-chevron address, effectively stranding roughly 80 Icarus personnel aboard the Ancient ship, Destiny. As the last person to evacuate the base, Colonel Everett Young spent valuable seconds in securing a device. As a result, he was critically injured as the base exploded and he was flung through the Stargate and across the Gate room aboard Destiny. In the ensuing chaos, Rush discovered the device and discreetly made use of it. Afterwards, the device was used by the expedition to keep contact with Earth and make visits to families, as well as occasionally call in experts when Destiny's crew's own experience is insufficient. On one occasion, the device was used to bring a family member to Destiny. Marian Wallace was brought aboard in order to help her see her son Eli Wallace again and convince her not to give up on her fight against HIV. However, this was a one-time occasion that was only performed thanks to the influence of Camile Wray, but is an action that all of the crew wish they perform, so that their family members could see what they are doing. (SG1: "Crusade", SGU: "Air, Part 1", "Air, Part 2", "Sabotage", "Pathogen")

During Young's attempt to make a report to Earth, he switched bodies with a Nakai aboard a mothership who had come into possession of a communication stone. After an attack by the aliens, Young used this to sneak aboard the mothership to try to rescue Chloe Armstrong, who had been kidnapped by them. He ended up freeing Rush instead, and when Young used a mind probe given to him by Rush, the connection was severed. Rush killed the alien whose body he'd been inhabiting before Young could return. The Nakai later used the stone in their possession to infiltrate Destiny and sabotage its Faster-Than-Light engine, allowing them to mount an attack which Destiny could not flee from. Fortunately, Jeremy Franklin managed to use the Destiny interface chair to bypass the damage and get Destiny to safety. (SGU: "Space", "Sabotage")

After switching with Colonel David Telford on a scheduled switch, Rush had a dream made up of residual memory carried over from Telford. In this, he learnt that Telford was the spy for the Lucian Alliance. In order to prove this and to allow Young to interrogate Telford, Rush switched with Telford again during a scheduled transfer and posed as him on Earth. Tailed by Dr. Daniel Jackson, Rush made contact with the Alliance through a cell phone found in a safe-deposit box. However, this aroused the Alliance's suspicion as he did not use the code-word to identify himself, which revealed to the Alliance that someone else was inhabiting Telford's body. Rush was then captured and taken away on a Tel'tak. He was then forced to reveal his real identity, and work on dialing the ninth chevron for the Lucian Alliance. On Destiny Young interrogated Telford about his actions. Young then used the stones several times to report to Earth. After Telford proved to be completely uncooperative - and to even lied to him - Young had Cpl. Marsden switch bodies with Lt. General Jack O'Neill so that O'Neill could help in the interrogation. Even with O'Neill there, Telford refused to cooperate, so O'Neill was sent back. Young then vented the atmosphere in Telford's room, killing him. He then revived him. Doing so also effected Rush on the other end of the link, but he too was revived when Telford was. Telford's brainwashing was broken and he revealed all that he knew about what was going, on including the location of the planet Rush was on. This led to an attack by the George Hammond, which forced the Lucian Alliance to evacuate to Destiny. The travel through the Stargate to Destiny severed the connection between the Telford and Rush. Telford however remained free of the brainwashing, even in his own body. The Alliance later used the stones to bring in a team of doctors from Earth to treat the injured, by forcing Wray and three others to switch bodies with them. The doctors successfully saved Lt. Tamara Johansen and Telford, but were unable to save Kiva or TJ's baby. Telford and Camile Wray later used the device to report back to Earth on the aftermath of the invasion, where they were ordered to keep a small number of the invasion force onboard Destiny. Later, one of the Alliance members, Ginn, switched with Dr. Amanda Perry in order to report what she knew about a Lucian Alliance attack on Earth to Homeworld Command. They were both were killed when Simeon killed Perry in Ginn's body. (SGU: "Subversion", "Incursion, Part 1", "Intervention", "Aftermath", "Malice")

When Senator Michaels decided to examine Destiny to see if building a new Icarus Base was feasible, she brought with her Dr. Andrew Covel, the two switching with Wray and MSgt. Ronald Greer. On Destiny, the two took a tour of the ship and Michaels chatted with Chloe while Covel examined the signal Rush found and the two determined that building another Icarus Base was not viable as they didn't believe the crew would survive long enough. On Earth, the Lucian Alliance attacked by crashing a Tel'tak into Homeworld Command. The ship was armed with a 50 to 70 megaton Naquadria bomb. Wray and Greer attempted to reach it, rescuing along the way what turned out to be the Alliance pilot. In the process they accidentally exposed Michaels' and Covel's bodies to a fatal dose of radiation in the process. The two learned of this when an FTL drop-out severed the connection for a few moments. The connection was unable to be severed due to the radiation and Covel's desperate sabotage- Covel hoping that he and Michaels might be able to survive the deaths of their bodies if they remained in Wray and Greer- but it was temporarily severed again by an FTL jump so Varro could tell Wray and Greer how to disarm the bomb. The two failed, but Rush fixed the problem with the stones and sent Michaels and Covel back with the necessary information to complete the task, dismissing Covel's hopes that they would survive as weak at best. Due to problems with the Earth device, a connection was unable to be made for over six days. However, once the problem was fixed, Telford connected to inform the crew that the disarming was successful. (SGU: "Alliances", "Hope")

When trying to connect with Earth, during the six days that the stones were down, Chloe fell asleep while connected to the stones, allowing the consciousnesses of Ginn and Amanda Perry, which had continued to exist in the communications stones as the connection was not properly severed, to take control over her body. Due to a glitch, Ginn experienced incidents where she seemed to relive her death by strangulation and grew weaker and weaker as time went on, allowing Chloe and Perry, who was weaker than both Ginn and Chloe to surface more and more often. Eventually the Destiny interface chair was used to transfer the two minds into Destiny's mainframe. (SGU: "Hope")

As part of their plan to dial Destiny from Langara, Richard Woolsey brought two communications devices of the smaller variant to Langara where he tricked a Langaran Captain and Administrator Halpern into picking up the stones, allowing Lt. Matthew Scott and Young to switch with them and pose as them so they could take over the facility while on Destiny, Vanessa James gave the two a tour of the ship to try to garner sympathy from them. The ruse was eventually exposed when a Langaran soldier overheard a conversation revealing the truth and the plan failed. (SGU: "Seizure")

After a plan was devised for the crew to enter stasis for three years to skip the galaxy that they were in, the communications device was used so the crew could say goodbye to their loved ones. (SGU: "Gauntlet")

Known uses[]

User Counterpart Reasoning and circumstances
Dr. Nicholas Rush Dr. Bill Lee Rush first used the device in order to contact Earth about the situation when the personnel of the Icarus Base found themselves on board the Ancient vessel Destiny. Bill Lee had been waiting for the connection. Rush, after returning to Destiny, claimed that Lt. General Jack O'Neill had placed him in charge. (SGU: "Air, Part 2")
Colonel David Telford Rush used the device to investigate Telford as he believes he was a spy for the Lucian Alliance after switching with him on a scheduled switch and getting residual memories as a result. This also allows Young to interrogate Telford in Rush's body and free him of his brainwashing by the Lucian Alliance. The link was severed by Rush traveling through the Stargate to Destiny in Telford's body. Later, a Rush from an alternate future switched with a Telford from that same future now on Earth in order to find out what happened during an attempt to send the crew home. (SGU: "Subversion", "Incursion, Part 1", "Twin Destinies")
Unnamed Airman Rush switched with this Airman in order to report to Colonel David Telford with Colonel Everett Young on the Berzerker drones blockading every Stargate in the galaxy and to ask for resupply from Earth. (SGU: "Gauntlet")
Colonel Everett Young Colonel David Telford Young further briefed Earth personnel about their situation aboard Destiny, then used his remaining time to talk to his wife Emily Young. Meanwhile, Telford assessed the situation aboard Destiny, pushing Young's injured body to the limit. Young later switches again to report on Destiny's lack of power while Telford tries to convince Lt. Matthew Scott to turn against Young and again when enacting a plan to return the crew to Earth during which time Young visits with his wife and Telford takes temporary command of Destiny. (SGU: "Air, Part 3", "Darkness", "Earth")
Airman Hamilton On a scheduled transfer Camile Wray and Young came to Earth and was informed about the International Oversight Advisory's plan to get them home. Young later switched with Hamilton again to report on the failed attempt to dial Earth. (SGU: "Earth")
Airman Roberts Upon learning that Colonel David Telford has been spending time with Emily Young via a residual memory "glitched" into Lt. Matthew Scott's mind after their previous transfer, Young confronted Telford and his wife at her home. Telford called The Pentagon and the connection was abruptly terminated moments before Young could attack him. (SGU: "Life")
Airman Lucas In a scheduled transfer, Young posed as Dr. Dale Volker and finished his previously attempted assault on Colonel David Telford as he left his house. (SGU: "Life")
Nakai Young attempted to use the stone to connect to Earth, but it instead connected with a much closer stone that had recently been examined by a Nakai. Young later used the stones to board the Nakai mothership in an attempt to rescue Chloe Armstrong and succeeded in freeing Dr. Nicholas Rush before the connection was accidentally severed. He was unable to reconnect afterwards as Rush killed the alien. (SGU: "Space")
First Civilian Technician Young switches bodies with the technician to report to Lt. General Jack O'Neill about the situation with Colonel David Telford. He ends up switching many times in order to keep reporting in, one time even bringing O'Neill back with him to interrogate Telford. (SGU: "Subversion")
Airman Myers Young switches bodies with Myers to report to Lt. General Jack O'Neill about the Lucian Alliance invasion of Destiny. (SGU: "Incursion, Part 1")
Airman Philander Young connected with Philander to participate in a discussion of dialing Destiny using Langara's Naquadria core. He later switched again to discuss his plan to infiltrate the power facility. (SGU: "Seizure")
Administrator Halpern As part of their plan to infiltrate the Langarans in order to dial Destiny, Young switches with the administrator who while on the ship is tied up and given a tour of the ship by Lt. Vanessa James. The plan ultimately fails and the connection is severed. (SGU: "Seizure")
Second Civilian Technician Young switched with a second technician to report with Dr. Nicholas Rush on the situation with the Berzerker drones blockading all of the planets in range to Colonel David Telford and request resupply from Earth. He later switched again to say goodbye to Telford. (SGU: "Gauntlet")
Chloe Armstrong Dr. Mehta After the death of her father, Chloe visited Earth to tell her mother Patricia Armstrong the news. Aboard Destiny, Mehta assisted Colonel David Telford and toured the ship. She was outraged when Lt. Tamara Johansen sedated Telford to prevent further injury to Colonel Everett Young's body. (SGU: "Air, Part 3")
Dr. McCormack McCormack was a scientist who developed a plan with Dr. Williams to dial Destiny's Stargate back to Earth and switched bodies with Chloe to carry it out. (SGU: "Earth")
Dr. Brightman When it required surgical skills to remove a Tracking implant from Dr. Nicholas Rush's body, Chloe used the communications device to bring a surgeon from Earth. Brightman is able to start the surgery, but heavy weapons fire against the shield disrupts the connection, forcing Lt. Tamara Johansen to finish the job. (SGU: "Divided")
Airman Kelly Kelly volunteered to switch bodies with Chloe on a scheduled use of the communication device. (Kino: "We Volunteer To Do This")
Ginn After falling asleep while using the communications stones, Ginn's consciousness, which had been trapped in the communications stones, took control of Chloe's body, suppressing Chloe's own mind. As time went on, Ginn grew weaker and Chloe resurfaced more and more often, as did Dr. Amanda Perry who was also in Chloe's body. Eventually, Ginn and Perry's minds was transferred into the ship's mainframe. (SGU: "Hope")
Amanda Perry After her death, Perry's consciousness was trapped in the communications stones and along with Ginn's ended up trapped in Chloe's body. Perry's consciousness was the weakest of the three and surfaced the least often and for the shortest time before eventually being transferred into the ship's mainframe along with Ginn. (SGU: "Hope")
Unnamed Airman Chloe switches with an unnamed Airman to say goodbye to her mother before going into stasis for three years. (SGU: "Gauntlet")
Camile Wray Airman Baldwin On a scheduled transfer Wray and Colonel Everett Young came to Earth and was informed about the International Oversight Advisory's plan to get them home. (SGU: "Earth")
CMSgt. Mooney Camile treated this excursion as a personal one, rather than business, much to the dismay of Carl Strom. In the body of Mooney, she visited her long-time partner, Sharon Walker. (SGU: "Life")
Dr. Amanda Perry Camile switched bodies with Perry so she could increase the efficiency of the Faster-Than-Light engine so the ship could make it to the next galaxy. Wray spent the time with her partner Sharon Walker while Perry spent her time fixing the FTL drives and reconnecting with Dr. Nicholas Rush who she had feelings for. (SGU: "Sabotage")
Dr. Brightman Wray is forced to switch with Brightman so that she and three other doctors can treat those wounded on Destiny. Brightman is able to save Lt. Tamara Johansen and Colonel David Telford, but Kiva dies despite her best efforts. Eventually the Alliance severs the connection, leaving Wray still on board for the remainder of the invasion as the rest of the crew has already been forced off the ship. (SGU: "Intervention")
Airman Phillips Camile switched with Phillips to once again visit Sharon Walker. She also consoled Eli Wallace after his mother became ill. (SGU: "Pathogen")
Senator Michaels The senator wanted to see about Dr. Nicholas Rush's discovery of Destiny's true mission with the help of Dr. Andrew Covel and whether building another Icarus Base was worth it so Wray volunteered to switch bodies with her. The connection was interrupted twice by the ship jumping in and out of FTL, once on purpose before it was eventually severed so Michaels and Covel could try to disarm a Naquadria bomb that Wray was having no luck with. As a result of Wray using her body, Michaels was exposed to a fatal dose of radiation. (SGU: "Alliances")
Eli Wallace Dr. Williams Williams was a scientist who developed a plan to dial Destiny's Stargate back to Earth and switched bodies with Eli Wallace to carry it out. Eli, in Williams' body, visited his mother under the guise of "Philip Fry" before going to a club with Chloe Armstrong, also in another person's body. (SGU: "Earth")
Airman Tracy After learning that his mother Marian Wallace is in the hospital, Eli switches with Tracy in order to visit her. He ends up telling her the truth of where he really is and takes her back to Destiny with him thanks to Camile Wray to show her the wonders he's seeing, which causes her to regain her hope and admits she's proud of him. (SGU: "Pathogen")
Dr. Bill Lee In order to discuss his theory about dialing Earth from within a star, Eli switches with Bill Lee. While Eli is on Earth, the crew explain to Lee Eli's plan. (SGU: "Twin Destinies")
Airman Jefferies Eli switches with Jefferies to say goodbye to his mother Marian Wallace. (SGU: "Gauntlet")
Lt. Matthew Scott Colonel David Telford Scott posed as Telford and visited his estranged girlfriend, Annie Balic after receiving a letter telling him he has a son. In Scott's body, Colonel David Telford used the opportunity to question Colonel Everett Young about the information gathered when he enacted his plan to dial Earth, and expressed suspicion about how Rush was able to defuse the situation. The switch left Scott with a few of Telford's memories which he later saw in a dream. Scott later switched with Telford so the crew could inform him of Eli's plan to recharge inside a blue giant. (SGU: "Life", "Blockade")
Langaran Captain As part of their plan to infiltrate the Langaran power facility, Scott switches with the captain so he can lead Richard Woolsey to Administrator Halpern with no problems from the guards. On Destiny, the captain is given a tour of the ship by Lt. Vanessa James. The plan to infiltrate the facility ultimately fails and the connection is severed. (SGU: "Seizure")
Unnamed Airman Scott switched with this Airman in order to see his son one last time before entering a Stasis pod. (SGU: "Gauntlet")
Lt. Vanessa James Dr. Amanda Perry Vanessa initially switches with Perry so Perry can increase the efficiency of the Faster-Than-Light engine, but can't handle it and has the connection severed. (SGU: "Sabotage")
Nakai Vanessa's imprint was never removed from the communications stone she was using which was knocked to the floor and never noticed. As a result of this and the fact that the device was active due to Dr. Amanda Perry having switched bodies with Camile Wray to increase the efficiency of the Faster-Than-Light engine, the Nakai were able to have one of their number switch bodies with James and sabotage the ship and figure out its location so they could mount an attack. James didn't realize what really happened until later, thinking it a bad dream until Chloe Armstrong realized what it could really mean. (SGU: "Sabotage")
Cpl. Marsden Lt. General Jack O'Neill O'Neill uses the device to help Colonel Everett Young interrogate Colonel David Telford. (SGU: "Subversion")
Dr. Dale Volker Dr. Zeigler He was called in to treat those wounded in the Lucian Alliance invasion of Destiny along with Dr. Brightman, Dr. Finch and Dr. Timan. Zeigler and the other three doctors were able to successfully save most of the wounded, but Kiva and Lt. Tamara Johansen's baby died despite their best efforts. After they finished treating the victims, Zeigler and the others were returned to Earth. (SGU: "Intervention")
Dr. Kemp Dr. Finch He was called in to treat those wounded in the Lucian Alliance invasion of Destiny along with Dr. Brightman, Dr. Zeigler and Dr. Timan. Finch and the other three doctors were able to successfully save most of the wounded, but Kiva and Lt. Tamara Johansen's baby died despite their best efforts. After they finished treating the victims, Finch and the others were returned to Earth. (SGU: "Intervention")
Dr. Ryder Dr. Timan She was called in to treat those wounded in the Lucian Alliance invasion of Destiny along with Dr. Brightman, Dr. Finch and Dr. Zeigler. Timan and the other three doctors were able to successfully save most of the wounded, but Kiva and Lt. Tamara Johansen's baby died despite their best efforts. After they finished treating the victims, Timan and the others were returned to Earth. (SGU: "Intervention")
Dr. Lisa Park Marian Wallace Park switched with Marian so she could see Destiny and Eli Wallace in his own body. (SGU: "Pathogen")
Unnamed Airman Park switched with the Airman to say goodbye to loved ones and enjoy being able to see again for a while. (SGU: "Gauntlet")
Ginn Amanda Perry Ginn switched with Perry to report to Earth while Amanda was called in so someone Dr. Nicholas Rush trusted could use Destiny's bridge to turn the ship around and meet up with the Ursini spaceship he and Colonel Everett Young were trapped on. This led to the exposure of Rush's discovery of the bridge. Both died when Simeon killed Perry in Ginn's body. (SGU: "The Greater Good")
Chloe Armstrong After death, Ginn's consciousness got trapped in the communications stones and while Chloe was using them and fell asleep, Ginn's mind entered her body and took over control. Ginn periodically had choking episodes, presumed to be her reliving her death at the hands of Simeon and over time she grew weaker, allowing Chloe to regain control of her body more and more often and for Amanda Perry to surface as well. Eventually Ginn's mind was transferred out of Chloe's body and into the ship's mainframe with hope of downloading her into another body in the future. (SGU: "Hope")
MSgt. Ronald Greer Dr. Andrew Covel When Senator Michaels came to Destiny, she brought with her Covel and at Camile Wray's insistence, Greer was the one to make the switch as he refused to use the stones and Wray thought it would be a good idea for him to have a turn. On Destiny, Covel wasn't sure what to think about the signal while on Earth, Homeworld Command came under attack from the Lucian Alliance and Greer was slightly injured. The connection between the two was severed twice by FTL jumps (once on purpose) before the connection was severed permanently despite Covel's efforts to stop it so Michaels and Covel could attempt to disarm a Naquadria bomb. As a result of Greer using his body, Covel was exposed to a fatal dose of radiation. (SGU: "Alliances")
Amanda Perry Chloe Armstrong Perry's consciousness was trapped in the communications stones when she was killed and like Ginn, she ended up in Chloe's body when she fell asleep. Of the three, Perry was the weakest and so she surfaced the least and for the shortest time before one of the other two took control. Eventually her mind was transferred into the ship's mainframe in hopes of downloading her into another body in the future. (SGU: "Hope")
O'Hara Colonel David Telford After over six days of trying and failing to make a connection to Earth, Telford switched with O'Hara to report that the problem had been with the stones on the Earth end and that the bomb had successfully been disarmed. (SGU: "Hope")
Dr. Adam Brody Dr. Rodney McKay In order to try to convince Eli Wallace and thus Colonel Everett Young of his plan, McKay switches with Brody while Brody examines McKay's solution on Earth. Both end up convinced of the solution and McKay returns to his own body. (SGU: "Seizure")


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Schematics for the device

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Ancients AmaraAmara's motherAncient Med TechAtlasAurora CrewmanAurora GuardCaptain of AuroraCyla UrbanusHeliaHippaforalkusJanusJanus' assistantMorgan Le FayLilithMeliaMerlinOma DesalaOrlinChaya SarTrebalUnnamed Ancient maleVasi
Ancient outposts Antarctic outpostAsurasAthosAtlantisCamelotDaganDakaraDorandaDoranda outpostEarthHadanteHarmony's planetHeliopolisHeliopolis IIJanus' outpostJanus' research outpostLord Protector's PlanetM1M-316M7G-677PraxyonRuins of LarrisTaonasTaranisTaranis outpostVis Uban
Ancient technology Amplifier braceletAncient environmental suitAncient force fieldAncient freighterAncient hologramAncient hyperdriveAncient ligature deviceAncient maintenance robotAncient pressure suitAncient remote controlAncient seismic controllerAncient sensorAncient shieldAncient shuttle pulse weaponAncient stasis podAncient wallAnti-gravity shieldArthur's MantleAscendometerAscension machineAtlantis databaseAtlantis transporterAtlantis' shieldAttero deviceAttero device control keyAurora-class battleshipAncient beam transporterAtlantis biological sensorsBiometric sensor arrayCall forwarding deviceCentral data coreCharybdisCity-shipCO2 scrubberContainment vesselControl chairDestiny's shieldLantean control consoleLantean tabletControl interface hubAncient control panelCorrelative update systemLantean cruiserAncient crystal power cellDakara superweaponDalera's weaponAtlantis Desalination TanksDestinyDestiny AIDestiny interface chairDestiny pulse weaponDestiny shield emitterDestiny simulation programDial Home DeviceDimension observerDNA resequencerDrone weaponExogenesis deviceFaster-Than-Light engineAncient healing deviceInvisibility deviceKinoLagrangian Point satelliteLantean pulse weaponLantean stun weaponLife signs detectorLong range sensorsLong-range communication deviceLong-range communication stoneLantean medical scannerMobile drilling platformMolecular construction deviceNaniteNanite creation machinePersonal shield emitterPuddle JumperQuantum MirrorRepository of knowledgeSangraalSeed shipOrbital weaponStardriveStargateStargate destroyerStargate shieldTaranis' shieldTime loop machineAncient time machineTransportation ringsTumor creation deviceAtlantis underwater scannersWormhole driveZero Point Module
Terms Ancient contagionAncient languageAncient Technology Activation geneAscension