As a CIA/Mossad/FBI/NSA/MSS/MI5/GRU agent, you’ll be happy to know that no one will be able to access your iPhone5S by killing you, or severing your finger from your body. Which means that your torturers will have to be even more creative and brutal in getting you to unlock your phone. Oh well.
So how does the iPhone5S’s finger print scanner avoid being duped by a corpse? The sensor has been engineered to be activated by the electric current in your skin. If you’re dead, you don’t have any electricity, so to speak. Secondly, the scanner doesn’t read the hard, non-living outer crust of your skin. It detects the living sub-epidermal layers of your skin. And yes, you guessed it, those layers die when you do.
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[Source : CBC]
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