1. multi login / account for gtalk
gtalk dun allow multi login yet
2. heart rate monitor wit calorie counter that link to ur polar / suunto / mio watch via website / apps on desktop / wireless / bluetooth
for example:
u key in ur calorie intake on ur desktop then it sync to ur HRM watch
ur android can replace that function when u r on the go
3. portable gas dectector / breath analyser
the probe will have all the sensors, android phone is the display
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