The wireless company's forthcoming phones could use ingestible tablets to identify users.

Last week at the D11 Conference,  Regina Dugan, head of Google-owned Motorola’s research division, introduced an ingestible vitamin prototype that transforms your entire body into an authentication passcode. Made by Proteus Digital Health, the FDA-approved pill contains a small chip that can be switched on and off by your stomach acid. Here’s what happens next, once swallowed the pill creates an individual 18-bit signal that would be detectable by external devices like your phone, computer, and even car. The pill also can be taken daily for up to a month.

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