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Scrawling your logins and passwords on scraps of paper is a recipe for disaster. In US patent application 2008/0148392, Motorola describes a USB key fob that lets you carry your login details around securely in the form of an encrypted file downloaded from a PC. Your fingerprint is used to unlock the fob: touch its built-in scanner and your password information is unscrambled and shown on an LCD display.

We already have pill-sized wireless cameras that travel through the gut, beaming video to doctors – but their tiny batteries only last for a short time. Now Hikaru Jimbo and Norihisa…

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