Proximity Sensor lets web sites to know when an object (i.e. you)
is close to a device.
I describe the privacy issues of proximity sensor in my analysis.
This example currently works best with a modern hardware such as
Android device with Firefox Mobile browser.
Proximity events are related to user's activity, such as:
User's hand-waving in front of a device
Placing a device close to your head. Are you sitting there at all? Ambient Light Sensor is a perfect proximity sensor
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).
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 proximity distance:
Min/Max time between consecutive events: