News for hackers. Stuff that matters.

A comment on Spy camera detection using smartphone time-of-flight sensors. Parent comment

Re:Spy camera detection using smartphone time-of-flight sensors by mnw21cam on Friday November 19, 2021 @04:57AM (#29275527)
The filter/sensor itself doesn't need to be retroreflective. The fact that it's sitting at the focus of a lens makes it retroreflective.
[ Parent | on HN ]

There are no comments on this comment yet.