Sloshing Cellphones Reveal Their Contents

holy_calamity writes "UK researchers have developed software that represents a handset's battery life by using a phone's speaker and vibrator to make a device feel and sound like it contains liquid. You give it a shake to find out how much is left. The same technique can be used to represent new messages by simulating balls rattling around inside a box. It runs on recent Nokias with accelerometers; video from the researchers explains it well." What a bizarrely fun idea.

Re:that's just stupid

[mach1980]

We use lithium-ion batteries that have a very flat voltage curve followed by a steep dropoff once the juice starts to drain. Our solution were to measure the current used by the device and integrate towards the mAh left.
It kinda works but as the batteries gets old it looses accuracy.

Go ahead and score this as off topic.

3 words

[Anonymous Coward]

cycle usage order