The x220t supports 2 fingers only, as do other wacom touch-enabled devices (bamboo, Intuos 5) and many built-in serial tablets in other tablet computers. The Apple trackpad supports more touchpoints (can't remember, 10 maybe?). Note that behaviours aren't the same, the x220t and other built-in devices are direct-touch, touchpads are by their very nature indirect touch devices. Be aware that plenty of tech specs say "multitouch" when they only support dual-touch.