How to wake a idle tablet without using the power switch?

Hi,

on google play and elsewhere there a lot of applications, which will wake an idle tablet via shakeing
or by moving over the proximity sensor, or by manipulateing any of the zillions of sensors of other phones/tablets.

ME176CX:
Proximity sensor? ...no sorry...not yet.
Light sensor? no
GPS? Not working at all.
Accelerometer? YES...but unfortunately switch off when idle.
Magnetic field sensor: YES and working when if configured so. But I cannot get it working
(where is the sensor located?)

I dont want to wear off the power switch for simply wakeing my tablet.

Is there any application or hack known which enables to wake the tablet without
using the power switch and which may not drink the Amperes pint wise?

Best regards,
tuxic