The main control chip is capable of simultaneously capturing multiple touch points, and secondly, it can discern the intent behind each finger's touch signal. In other words, it provides users with gesture recognition functionality. Among commercially available products, Apple's iPhone and MacBook laptops both achieve this functionality to a fundamental degree. However, the iPhone currently permits only two fingers to interact simultaneously for functions such as rotation and scaling, representing dual-touch capability at most. Microsoft's Surface Computer, meanwhile, is even more remarkable, capable of responding to 52 touch points simultaneously.