Look at the video at the bottom of the page (say, at 27 seconds in) -- it is very clear that it has higher resolution than just which key you are touching. It

Look at the video at the bottom of the page (say, at 27 seconds in) -- it is very clear that it has higher resolution than just which key you are touching. It says there are 80 touch sensors, but presumably each sensor is like a mini track pad, not just an "on or off".