The technology was first used by Starfleet in 2373, installed on the bridges of ships including the USS Defiant and USS Malinche. (DS9 episode: "For the Uniform") A holo-communicator was also installed in Captain Benjamin Sisko's office on Deep Space 9, and at Starfleet Command on Earth. (DS9 episode: "Doctor Bashir, I Presume") Also in 2373, Captain Sisko contacted Kira Nerys from the Defiant using the holocommunicator. (DS9 short story: "Where I Fell Before My Enemy")