The police in various locales have my fingerprints, but I would never put it in a device on my own.

Rumor about the Galaxy S5 is it is going to have a retina scanner. I'm sure they will soon have a phone that you have to jerk off on so it can log your DNA so Facebook. the NSA, and the cast of SVU can log it.
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Thinking of cracked-out and/or tweaking whores getting their throats and asses brutalized for the next hit makes me hard. --Rear Admiral