Highfive is new video conferencing system from two former Google engineers. For $799, users get a sleek device that can sit on top of a television or mount to a wall and includes a video camera, microphone array, and HDMI and Ethernet connections to connect to the Highfive online system. Users initiate a video call through the system’s app or browser and send the URL to as many as 10 other participants. Using Bluetooth low energy, the system recognizes if participants are in a room with a Highfive device and then, by swiping across their smartphone screen, the video transfers to the television in the room—without cables. The system also automatically displays video of the person talking.