http://uwb25d43nnzerbozmtviwn7unn7ku226tpsjyhy5n4st5cf3d4mtflqd.onion/posts/tamper/index.html
Haven is an Android app developed by the Freedom of Press Foundation that uses the smartphone’s many sensors — microphone, motion detector, light detector, and cameras — to monitor the room for changes, and it logs everything it notices. Unfortunately Haven is currently unmaintained, remote notifications are broken , and it is unreliable on many devices.