Using magnets to control touchscreen devices (knobs and sliders)

[ToS]

Just watch the video, it is pretty self explanatory.

[Duros]

Wow this is pretty cool, than means you can put "real knobs" on top of your touchscreen device. Would be cool if h e x l e r will add this possibility to its Touch OSC.

[photojojo]

Cue everybody looking for a magnet and scratching their iphone screen up.

[Destiny]

Curious on how they're going to make something like this work with multiple magnets

[ToS]

You can't. Even the current technology is imperfect with one magnet. But with minor tech improvements you could possibly get a better precision so you could move that one knob around the screen and tweak various controls.