Scrawling your logins and passwords on scraps of paper is a recipe for disaster. In US patent application , 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 鈥� but their tiny batteries only last for a short time. Now Hikaru Jimbo and Norihisa Miki at Keio University in Japan have boosted the cameras鈥� longevity by developing a 鈥済astric microbattery鈥� that scavenges stomach acid to use as the battery鈥檚 electrolytic fluid. The work will appear in Sensors and Actuators B: Chemical.
