I've often wondered what would happen if I wandered around with a bright IR led flashing on my lapel at about 30 or 60 Hz and sufficiently invisible to human eyes yet low wavelength enough to get into most CMOS chips and dazzle the camera.

I think this on shopping trips routinely. I don't like being surveiled and even though I have nothing to hide (I've never shoplifted in my life!) I hate the persuasive nature of it all. I don't even mind being followed by a human that much, but I do mind algorithmic analysis that is far more effective, scary, and invasive. Sadly I think the answer to this experiment would be being asked to leave or an uncomfortable chat with a policeman. Nevertheless I silently would like someone braver than me to try it. You're allowed to wear a light on your clothes -- why not make it an IR one?