Un wired view suggests these ways to use the trackpad:
- If you want to dial a number, you can just draw it on a trackpad.
- Or the rotational dial may appear on display, and you rotate it by sliding finger on a track pad.
- In the open mode, the transparent trackpad can easily be made to display the standard T9 keypad and other symbols. That can be accomplished by making polarized number and symbol markings that can only be seen when the trackpad is open. Or they can be implemented as tiny LED’s.
- When needed, you can keep both sides of the cover/trackpad touch-active at the same time. Thus having “six degrees of freedom” for control, and enabling 3D gestures on the device. Standard multi-touch gestures along “XY” axis on one side of trackpad, adding “Z” axis for the touch events on the other.