Subcutaneous transponder

A subcutaneous transponder (also known as subdermal transceiver or subcutaneous communicator) was a small transponder inserted under the skin, used by Starfleet and others. Its function was to maintain contact between an away team member and their home ship, and some models allowed the user to receive discreet audio transmissions audible only to them, making them particularly useful for undercover work.
== Known instances of usage ==
=== The 22nd Century ===
In the 22nd century, United Earth MACOs utilized subdermal transceivers for covert communications. Captain Jonathan Archer used one to communicate with T'Pol and Hoshi Sato in the command center on when he was tricking Degra into giving him the location of the Xindi weapon. ()
=== The 23rd Century ===
On a mission to Ekos in 2268, Captain Kirk and Spock had subcutaneous transponders implanted in their left forearms as a precaution in case they were unable to use their communicators. When they were imprisoned while on that mission, Spock fashioned a crude laser beam using an electric light, metal bands from a cot, and the rubindium crystals in his and Kirk's transponders. The beam was able to cut through the prison cell door lock. ()
=== The 24th Century ===
Subcutaneous communicators were used by William T. Riker and Deanna Troi in 2366 during a mission to investigate potential cultural contamination to the primitive culture on Mintaka III. ()
In 2377, Chakotay and Neelix were implanted with subdermal transponders for their undercover mission to Quarra, where much of the crew had been brainwashed into the local workforce. The transponders allowed Voyager to beam them out through Quarra's shield grid. ()
=== The 32nd Century ===
Subcutaneous communicators were used by Michael Burnham and Sylvia Tilly during their mission to Halem'no. ()
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Category:Communications technology