It was only a matter of time. First it lets you in and out of the building and what is next, use it as your timecard for payroll? They say it doesn't have GPS but I am sure there is a way to track the device. Sci-Fi meets reality!
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RFID (Radio Frequency IDentification) tags have a very short range on them, and need a reader device to be pretty close to acccess any information on them. They can even be encrypted to prevent most types of hacking.