MotionLock1.3

MotionLock automatically attempts to keep an Android device locked when it is placed face down or left without movement. It addresses the moment when a phone or tablet is set down unattended and could otherwise remain unlocked, using its sensors to recognize those conditions. Sensor monitoring runs only when MotionLock considers it necessary, rather than continuously.

The locking behavior depends on device-admin access, which allows the app to lock the device. This suits desks, bedside tables, shared work areas, and other situations where putting a device down should trigger protection. MotionLock concentrates on this single action instead of adding a larger set of device-management features.

MotionLock is open-source software for Android, built as a Universal architecture release, with version 1.3 identified as a super-alpha build. It uses the Sensey library for sensor handling, and Sensey is licensed under Apache-2.0. The developer describes the app as an attempt to keep devices locked and notes that numerous more polished apps perform this task better, so it is best viewed as an early, limited utility.