Here's looking at you ...

My computer has a camera.  As a security maven, I don't trust the software switch that turns the camera off (when I don't want it on), and have installed a shutter to physically block the camera.

Yesterday, when I went to start a virtual meeting, the shutter was still closed.  The computer, and the meeting software, warned me that something might be blocking the camera.

So, the computer can figure out that I've probably installed a shutter over the camera.

I'm not sure how I feel about that ...