Researchers at the University of Surrey and King’s College have created smart digital passports to track perishable food in real time.

Using sensors and AI, they show if food is fresh, safe, and good quality as it moves through the supply chain.

Researchers say the passport system could cut food waste, prevent spoilage, and help shops manage stock.

Experts say supermarkets could test the technology, using secure digital systems to make sure the information is trustworthy.