You can get lots of gadgets--laptops, mice, even a $30 flash drive--that lock with the swipe of your fingerprint. But don't assume that these tools are foolproof. Biometric-enabled devices may spare you from memorizing yet another password, but they can be cracked like any other security method. Case in point: engineers at Clarkson University have fooled fingerprint scanners with phony fingers made of Play-Doh. 

http://reviews.cnet.com/4531-10921_7-6405272-1.html?tag=nl.e501

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