The Bosch fridges send selfies to their owners at the supermarket to remind them what food they've already got at home.

Supermarket giant Sainsbury’s is enlisting the help of smart tech to try and cut food waste by giving families self-snapping fridges.

It’s handing a Bosch smart fridge to 20 families in Swadlincote, South Derbyshire, this week in an attempt to reduce the amount of food that gets chucked in the bin from over-buying and poor meal planning.

The Bosch smart fridge, which is worth £899, comes equipped with two built-in cameras that take pictures of the fridge’s contents every time the door is closed. One camera positioned on the inside of the fridge takes a snap of the door’s contents, while a camera in the door captures what’s on the main shelves.

The fridge then automatically sends its selfies to the Bosch HomeConnect app on its owner’s phone, letting them check remotely exactly what food is stocked in their fridge. The app even enables them to zoom in to see exactly how much milk is left in the bottle while they’re browsing the dairy aisle.

Sainsbury’s is running the smart fridge trial over a period of 6 months, and is working with sustainability group WRAP to monitor the results. Half of the families will use the fridges in any way they like, while the other half will get advice and guidance from Sainsbury’s Waste Less Save More food waste campaign. All of the families involved get to keep the fridges after the experiment is over.

To put Sainsbury’s experiment in context, The Huffington Post reports that even though 70% of people try to check their fridge before they go food shopping, more than half of them actually forget what’s in the fridge once they get the shops, or buy extra food on the way home from work that they don’t really need.

With its smart fridge project, though, Sainsbury’s aims to cut Swadlincote’s food waste by 50% over 12 months.