The communicator is a fictional device used for voice communication in the fictional universe of Star Trek. ... In Star Trek: The Original Series (TOS), communicators functioned as a plot device, stranding characters in challenging situations when they malfunctioned, were lost or stolen, or went out of range.

How does communicator work in Star Trek?

When Star Trek's Captain Picard presses his communicator badge, he can instantly speak with any member of his crew -- even when they've beamed down to a planet or a nearby spaceship. A company called OnBeep has made the Star Trek communicator badge a reality (well, except for the spaceship part).

Where did Kirk keep his communicator?

Kirk always seems to stick his vaguely in his middle-back area, like he's attaching it to his belt somehow, partially hidden under his shirt.