Source: Edward Snowden's Haven app uses your phone to detect intruders
Android: Haven: Keep Watch (BETA) - Android Apps on Google Play
Haven only saves images and sound when triggered by motion or volume, and stores everything locally on the device. You can position the device’s camera to capture visible motion, or set your phone somewhere discreet to just listen for noises. Get secure notifications of intrusion events instantly and access the logs remotely or anytime later.
The follow sensors are monitored for a measurable change, and then recorded to an event log on the device:
Android: Haven: Keep Watch (BETA) - Android Apps on Google Play
Haven only saves images and sound when triggered by motion or volume, and stores everything locally on the device. You can position the device’s camera to capture visible motion, or set your phone somewhere discreet to just listen for noises. Get secure notifications of intrusion events instantly and access the logs remotely or anytime later.
The follow sensors are monitored for a measurable change, and then recorded to an event log on the device:
- Accelerometer: phone’s motion and vibration
- Camera: motion in the phone’s visible surroundings from front or back camera
- Microphone: noises in the environment
- Light: change in light from ambient light sensor
- Power: detect device being unplugged or power loss