Simple On Off is an app that acts as a substitute for the power button by waving a hand near the proximity of the sensor

Note:
The Unlock / Lock service starts automatically after Reboot
For Lock Service you must enable Admin access
To uninstall turn off administrator function in: Settings-> Security-> Device Administrator



thank you good luck
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regards chaolabz



Required Permissions:

WAKE_LOCK to turn on the screen
USES_POLICY_FORCE_LOCK to lock the device
RECEIVE_BOOT_COMPLETED to automatically startup on boot if selected
READ_PHONE_STATE to suspend WaveUp while on a call