Amidst heated controversy as to whether Apple’s upcoming Mac OS X 10.6 (“Snow Leopard”) operating system will add multi-touch gestures to older MacBook and MacBook pro notebooks, the guys at The Unofficial Apple Weblog have taken it upon themselves to ask what makes a multi-touch trackpad unique and how to simulate this on an Apple notebook sans such an interface. The answer lies in an embedded controller chip, identical to the one in the iPhone and iPod Touch, which allows advanced input from more than two fingers at once.