“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). It even looks like the real deal.
Onyx, OnBeep’s communicator, clips to your shirt and connects to your cell phone with Bluetooth. It then lets you add other Onyx users to your network and communicate with them instantly with a press of a button. (They have to press a button to answer.)”