Many mobile devices have small touchscreens that require very fine motor control to interact with them. Iphone and Android phones have a built-in accelerometer that detects the physical orientation of the device. My idea was to leverage this function to provide for a different form of interaction.
Tilting the device while viewing a screen scrolls the active selection in the direction of the tilt. When the user moves the device back to a baseline position(non-tilted), the active selection is 'clicked' on by the system after a user-selectable amount of time.
This type of a navigation for groups with limited fine motor control, eg. the elderly or otherwise disabled people to interact with their system. It also has the benefit of allowing full view of the display when the user is interacting with it, rather than fingers obscuring the display.
