FYI. https://hacks.mozilla.org/2013/06/the-proximity-api/
W3C Working Draft – Proximity Events. "The API is about detecting how close the device is to any other physical object, by accessing the proximity sensor."
FYI. https://hacks.mozilla.org/2013/06/the-proximity-api/
W3C Working Draft – Proximity Events. "The API is about detecting how close the device is to any other physical object, by accessing the proximity sensor."