Using magnets to control touchscreen devices (knobs and sliders)

Just watch the video, it is pretty self explanatory.

http://www.youtube.com/watch?feature...&v=BDqOXpkDoQ4

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.

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

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

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.