These methods range from the inconvenient and unsecure, like Google’s Face Unlock system in Android, to the quick and painless, like Apple’s Touch ID on the iPhone 5S. Motorola debuted a number of new lockscreen options with the Moto X last year, including trusted Bluetooth devices and the Skip accessory. Last year, Regina Dugan, head of the group that came over to Google from Motorola, showed off concepts that lets you use a sticker on your skin to unlock your phone or swallow a pill that can authenticate you. The sticker is a temporary tattoo with an NFC chip inside, not unlike the cartoonish temporary tattoos you can purchase from vending machines in department stores across the country.
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