A person may be unaware of being photographed in a variety of situations, such as: It has been in use by British police since intelligence gathering on the suffragette movement in the 1900s.
Voyeuristic photography has also been centrally explored in movies such as Powell & Pressburger's Peeping Tom, and Michelangelo Antonioni's Blowup, and has appeared to comic effect in films such as Gregory's Girl and American Pie.
Erich Salomon took images of European summit meetings and a session of the US Supreme Court in secret using an Ermanox camera hidden in his hat.
France for instance, has very strict laws against publication of such images,[3] while the British tabloid press will publish a variety of secret photography.
[5] News gathering organisations and media trade unions issue ethical guidelines to their members on the use of secret and telephoto lens photography.