If data or data derived from it is not stored or sent elsewhere, do you need consent? It would be like asking consent for installing a mirror. Anyways, it seem

If data or data derived from it is not stored or sent elsewhere, do you need consent? It would be like asking consent for installing a mirror. Anyways, it seems like it actually works using a heat detecting infrared sensor, presumably similar to motion detectors used in alarm systems and automatic light switches rather than a camera.