I'm excited about multi-touch interfaces. I recently received an HP TouchSmart tx2 tablet PC. It uses DuoSense technology by N-Trig. The DuoSense technology combines a capacitive screen for touch and magnetic pen based input. Basically it allows the user to chose only touch, only pen input or both simultaneously. Built on top of this technology we have Multi-Touch Gestures(MTG) and Multi-Touch Messages(MTM). MTG works with Vista OS. Gestures use two fingers. MTM only works on Windows 7. MTM allows more than two fingers to be sensed.

Coming next will be a post about writing C# code for accessing the gestures...