Hello, I recently had the use of an HP TouchSmart 610 pc which has a 23" multitouch screen.
AGK reported that it wasn't multitouch at all. But more worryingly, AppGameKit refused to register a touch event from the screen. What appears to happen, is that touching the screen didn't trigger a click event, it only moves the cursor to that location. You have to touch and move a little bit to register as a click.