Sunday, June 2, 2013

Vitamin tablet makes your whole body an authentication token

Source: Wired UK

The tablets contain a small chip with a switch and something that amounts to an inside-out potato battery. After swallowing it the acids in your stomach act as electrolytes, which power the battery and turn the switch on and off in a sequence.

The result is that your body contains an 18-bit ECG-like signal, which can be picked up by devices and used as an authentication method.

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