https://hackerpaper.kaipfister.de/p/1305.7181/Collected HN comments and submissions linking this paper.enMon, 02 Nov 2026 11:16:22 GMThttps://news.ycombinator.com/item?id=11764175urn:hackerpapers:mention:1305.7181:11764175Tue, 24 May 2016 18:22:08 GMT<p>Provided one can access sensor data fast enough, cross device tracking[0]. Display an ad that lights up the room in such a way that you can read it with the sensor. Communication across an airgap. If you have two devices with screens and said sensors in a dark room, they might be able to communicate by turning screens on and off. Most speculatively, imaging the environment with compressive imaging[1]. One might be able to flash some patterns on the screen and look at light sensor output to take a picture. Giving web browsers access to sensors on our devices is sort of scary. [0]…</p><p><a href="https://hackerpaper.kaipfister.de/p/1305.7181/">Paper and discussion history</a>. A mention is not an endorsement.</p>cs.CV