Tesco installs smoke machines in stores at high risk of break-ins

It is understood Tesco does not plan to expand the use of the devices to other stores. Photograph: Tolga Akmen/AFP/Getty Images

Tesco has installed smoke machines in some of its stores to stop people from stealing goods after night-time break-ins.

Britain’s biggest supermarket chain uses the 4ft-high security devices in some stores at high risk of burglary outside opening hours.