BMW car key prototype unlocks hotel rooms, train seats [video]

By , IDG News Service |  Personal Tech, car tech

Researchers at BMW have developed a prototype car key that will unlock much more than just car doors. They've taken the wireless key already used to many cars and added an NFC, or near-field communication, function. NFC works over a distance of a few centimeters and is already used in contactless payment or ticketing applications.

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