Previously the producer and retailer would measure and record the fresh fish’s temperature manually at each step of distribution. If arrival temperature was found to be within the acceptable range, the fish’s shelf-life was assumed to be as expected and no corrective actions were taken. If a fixed expiry date had been exceeded when the fish was received at the supermarket, the fish would be discarded, creating waste and supply shortages.
Blockchain Technology for sea foods. To solve this problem, Infratab and NTUA implemented and tested the Freshtime temperature monitoring tag and software solution, to provide real‐time shelf life status to product handlers. The solution utilizes dual RF (RAIN and NFC) temperature and shelf life tags, a mobile smartphone application to handle the tags and a cloud database for data storage, reporting, analytics, and blockchain updates. The solution’s analytical model (validated by microbiological sampling conducted by NTUA researchers) predicts how much of the fish’s shelf life has been used and how much remains. This information is recorded in blockchain records and reported to handlers via alerts or when the tags are scanned with a mobile app on the handler’s smartphone.
