Secret photography is the use of an image or video recording device to photograph or film a person who is unaware that they are being intentionally photographed or filmed. It is sometimes called covert photography.

A camera phone is a mobile phone which is able to capture photographs and often record video using one or more built-in digital cameras. It can also send the resulting image wirelessly and conveniently. The first commercial phone with color camera was the Kyocera Visual Phone VP-210, released in Japan in May 1999.