To avoid holding the phone by hand, hands-free headsets and car systems use Bluetooth transmission to synchronize with the user's cellphone within a range of about 30 feet. See Bluetooth.
Bluetooth headsets integrate your phone’s functionality with speakers, intercom, microphone, or any peripheral device (or “farkle”, in BMW terms). Everything gets connected without wires or ...
Remember King Bluetooth? He did more than provide the name; he's also behind the logo. The Bluetooth "B" icon is a combination of the Nordic runes for the letters H and B—for Harald Bluetooth. Who ...