A simple and cost effective solution to identify your device position is an SMT 4 Directions tilt sensor. This component is suite for a vertical pcb. Either your device tilts left/right or back/forth, you will get a signal.
New generation of displays offer a tactile feedback feature to the user. This feature gives a positive identification when display is touched in a specific area and increases the user's confidence on his act.This feature is performed even with gloved hands.
Typical applications: Machinery ( noisy area ) or military.