Goodbye, hotel key cards. Hello, cell phone key. Thank close-range radio chips for this innovation, currently being pioneered in Sweden by lockmaker Assa Abloy. The radio technology, dubbed Near Field Communication (NFC), lets you check into a hotel via your phone, at which point its chip is activated. Viola, key. You then hold your cell phone next to your room door to unlock it. If you lose your phone, room access can be revoked. The technology also works with key-card locks, which are enabled by radio, according to the magazine Sci-Tech. No smartphone, no problem.
Pretty cool, eh?
The ability to simplify means to eliminate the unnecessary so that the necessary may speak. -Hans Hofmann