Fridges that will be able to send consumers email or text alerts when food is going off are being created by a group of researchers.
Ten scientists at Manchester University are working on an advanced device that will be able to send consumers email or text alerts.
Project head Dr Bruce Grieve said: "Food wastage costs in the UK are massive."
The disposable 5p gadget - like a security label on a CD - measures the temperature of food and the time it is stored.
It will be used by stores next year for bulk foods.