Developers Harness New Accelerometer and Gyroscope Support in Mobile Safari
Soon after the launch of iOS 4.2 late last month, it was discovered by mobile programmer Maximiliano Firtman that Apple had updated the iOS version of Safari to support a number of new HTML5 and W3C standards, one of the most interesting of which was...
http://www.macrumors.com/2010/12/22/developers-harness-new-accelerometer-and-gyroscope-support-in-mobile-safari/