I am developing a remote interface for an Android tablet so it would be good to see a code that works for the fake touch to create a mouse pointer on the screen for selection and interaction with apps.
Multitouch touch screen digitizers handle (2,3,4...) or more input fingers at a time at the hardware level.
Single touch devices handle only one finger at a time even if 2 or more are present. If you touch with a 2nd finger, the detected touch will "jump" from the first finger to the second finger location.
Install a touch screen visualizer or test application like Z device test. You can watch a video how it looks with one finger on youtube (which has fake dual touch and has some flaws).
So what a fake dual touch driver does is this:
It basically detects "jumps" of the finger and assumes it comes from a second and just keeps reporting a fixed virtual event (coming from the last known position from the (now vanished) 1st finger touch) while the 2nd touch is from your actual finger and reported regularly.
I was thinking of something like the remote control interface to get a mouse pointer so that someone who can't touch the screen can select an app. Maybe I am using the wrong term since this seems to be similar to multitouch.
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