zlacker

>>theamk+(OP)
For years I've thought about doing an "art project" to make people more aware of the fact they are being observed – but I never actually got up and did it.

The idea was to seek spots in the city where public web cams are pointed at, and paint QR codes on the ground at those spots (using a template), linking to the camera stream. So when curious passerbys scan the code, they see themselves in a camera stream and feel "watched".

>>fainpu+qj
There's probably several interesting ways to make a QR code on the ground with chalk. I'm thinking of a turtle bot loaded with spray chalk, for starters.

And this post uses wire screen to make a stencil https://www.instructables.com/Simple-QR-Code-Spray-Paint-Ste...