Ambient Light Sensor tells web sites about lighting conditions in your surrounding.
I describe the privacy issues of ambient light sensors in my analysis.
Example below currently works best with a modern hardware such as
Android device with Firefox Mobile browser or laptops such as Mac Book Pro.
Ambient Light Sensor readout is related to user's activity, such as:
Surrounding light change
User's position in front of a device. Are you sitting there at all? Ambient Light Sensor is a perfect proximity sensor
Sensing the direction and mechanics of user's motion, relative to light sources
The sensor is usually physically located in your devices' upper region; try moving your hand close to it.
If your device has a sensor and your browser supports it, you will see how the readout changes below (otherwise try Firefox Mobile on Android to get a feeling).
Providing more than 50 light events would best help in this privacy study.
Please to allow me research privacy aspects of sensors for public benefit.
Anonymized data (sensor readout) will be sent to SensorsPrivacy; it will never be shared.
Min/Max time between consecutive events:
Illuminance readout change
Numbers of same illuminance events. Sensors sometimes repeat a particular value of illuminance.