Ipad pro knows whether you are using your finger or apple pencil when ipad pro senses apple pencil the subsystem scans its signal at an astounding 240 times per second giving it twice the data points it normally collects with your finger this data combined with appledesigned software means that there are only milliseconds between the images you have in your mind and the one you see on the display two tilt sensors in the tip of apple pencil calculate the exact orientation and angle of yo