About
A browser-based optical camera scan, built to be honest about what phone optics can and cannot prove.
Hardware camera detectors sell two things: a ring of red LEDs and a radio meter. The LEDs work by making lenses glint, which the torch and sensor on your phone already do. The radio meter finds transmitters, but it also finds the router, the television and the neighbour's doorbell, which is why people stop trusting it. The optical half is the half that can be done well without buying anything — and it is the half that is with you when you actually need it.
It will not tell you a room is clean, because no optical scan can prove absence. It will not report a distance it cannot measure, or a confidence percentage it cannot justify. It will not claim to scan Wi-Fi, because a web page cannot. When there is not enough evidence to judge a point, it says it is still checking instead of picking an answer. Every number on screen is something the code actually measured.
Anyone standing in a room that belongs to someone else — a hotel, a short-term rental, a changing room, an office. It is built for the few minutes after you arrive, when the bag is still on the floor and something feels off. It runs on the phone in your hand, needs no install and no account, and asks for nothing but permission to use the camera.
CamFinder is an aid, not evidence. If you believe you are being recorded without consent, do not dismantle the device. Leave it where it is, photograph it in place, and contact local authorities — removing or tampering with it can destroy the thing that proves it was there.