You can programmatically change the inputMode
Multitouch.inputMode = MultitouchInputMode.TOUCH_POINT;
Multitouch.inputMode = MultitouchInputMode.GESTURE;
You might check out Matt's SimTouch solution
However, if you plan to build lots of kiosk-like apps, I recommend you buy at least a multi-touch monitor or touch PC.
On a Mac, you can test Gestures using the TrackPad just by running your air app in Flash Builder.
Yes I we can change the input mode. But based on my touch type will the program be able to change the event listening mode. On the same image a single touch should load an application. A zoom kind of gesture should zoom the image. So how can the input mode change as per these user actions? I have to add 2 different touch inputs to the same touch object.
I am sorry if I am being too naive.
For sure, Air only supports one inputMode at a time.
You might try staying in Gesture mode and using a different gesture (swipe, two finger tap) or mouse event (double click) to handle the open.