Flash Player 10.1 and AIR 2.0 Multi-touch Technology

ActionScript 3.0 Multitouch Beta Reference

The Multitouch class manages and provides information about the current environment's support for handling contact from user input devices

flash.events.TouchEvent
flash.events.GestureEvent
flash.events.TransformGestureEvent
flash.events.GesturePhase
flash.events.PressAndTapGestureEvent
flash.events.MouseEvent
flash.events.EventDispatcher.addEventListener()
Touch, multitouch and gesture input