Developing Applications Using Your Tablet PC: "A: There are actually quite a few differences. Tablet PC ink is collected from an electromagnetic digitizer that samples at 130 times/second, and has a resolution 7-10 higher than a screen resolution. Pocket PC's, on the other hand, use a resistive touch screen, sample at about 30 times/second, and have the same resolution as the screen. The ink on a tablet is also rendered using Bezier smoothing and anti-aliasing, so it looks much better than the ink on a Pocket PC, which is very pixelated by comparison. With that said, inking UI's can translate well because both devices are pen driven---but the ink API's are different and the ink itself does not translate well between the two."