[vertexFarm]

The LEDs on the front flash a certain wavelength of red light in an attention-grabbing manner and the filter blocks a lot of other light sources so the flashing red glint is easier to spot. It's pretty ingeniously simple. Of course it'll detect lots of other curved, reflective objects--the user has to verify it's a camera through manual inspection.

[felipemnoa]

I wonder if this still works if the camera is of the pin-hole type with no lens. i.e. camera obscura

[nomel]

These aren't looking for lenses as much as the reflection from the sensor. I imagine with a small enough aperture, things would be come difficult for you and the camera.

[themodelplumber]

> It's pretty ingeniously simple

I'll say! That's really cool. Thanks for explaining how it works.