Re:Spy camera detection using smartphone time-of-flight sensors
by sturgl on Friday November 19, 2021 @09:20AM
(#29277396)
Nevertheless, if you block all the ~850nm IR light from reaching the lens, then there cannot be any retro reflection at this wavelength, meaning the ToF cannot see anything.
[ Parent
| on HN ]
Re:Spy camera detection using smartphone time-of-flight sensors
by frizensami on Friday November 19, 2021 @09:28AM
(#29277491)
Yes, I agree. I believe military-grade optics detection systems use multiple wavelengths, and some even use short bursts of visible light, making it harder to block.