In a new Microsoft video that appeared in YouTube, Steven Bathiche, manager at the Applied Sciences Group at Microsoft, demonstrate the new refinements of Touch Cover 2 for Surface and Surface 2.
Steven details in the video that the company did more than adding new colors to the clickable keyboard. For example, the Touch Cover 2 incorporate 1,092 pressure sensors about 1,011 more than the original Touch Cover. These new matrix of sensors accomplish three things: improves typing accuracy, users can type much faster, and finally the most interesting feature is the cover also gestures on top of the keys — according to Bathiche, this is the only keyboard to offer such feature. The Touch Cover 2 is also more rigid and features a full QWERTY keyboard.
Source Microsoft