Here’s a quick demo that FAT’s [Theo Watson] put together. It utilizes the iPod’s accelerometer to determine exactly how quick it’s spinning as well as plays the noise data accordingly. This only works on the iPod touch 2nd gen since of its rounded case. He states scratching is coming next, however currently the app doesn’t understand which direction it’s spinning because it’s measuring outside force. This job was performed in reaction to [vanderlin]’s AR scratching that utilized fiducials on records.