Police in England have unveiled new video surveillance cameras that can be hidden behind a door to make it easier to escape from a burglary.
The new cameras are used by thieves to spy on their targets as they move through the home.
It is not clear how many of the cameras have been installed but it is thought to be around one per home in England.
Police say the new technology is being used to help catch criminals and stop them breaking into homes.
The cameras can be mounted on a keyhole or behind a sliding door so the thieves can see through it.
The technology can also be used to keep an eye on the thief or a nearby family member.
Anyone who has seen a camera fitted to their home can call police on 101 quoting incident number 74400.