CNET News Video: Unlock your hotel room door with your cell phone
CNET News Video: Unlock your hotel room door with your cell phone1:48 /
Lose your hotel key card? Did it accidentally get demagnetized? Well, there's a new, high-tech way to get into your room: mobile keys that let guests unlock their doors with their cell phones. CNET's Kara Tsuboi reports.
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