The Camera Restricta (for now just a prototype) will not allow you to take a photo if too many pictures were already geotagged for a specific locations:
"Camera Restricta is a speculative design of a new kind of camera. It locates itself via GPS and searches online for photos that have been geotagged nearby. If the camera decides that too many photos have been taken at your location, it retracts the shutter and blocks the viewfinder. You can't take any more pictures here."
