IBM, US retailer Walmart and Tsinghua University on Wednesday announced a joint effort to track the movement of food products in China using blockchain technology to improve food safety in the world's second-largest economy.
Blockchain technology, which powers the digital currency bitcoin, enables data sharing across a network of individual computers. It has gained popularity world-wide due to its usefulness in recording and keeping track of assets across practically all industries.
Chinese food safety practices have raised concern about contamination in China and in countries where Chinese food products are imported, and the new project aims to trace the movement of meat, vegetables and other products.
China's government has identified food authentication and supply chain tracking as a critical step to quickly find and eliminate sources of contamination.
With blockchain, the movement of food products can be digitally tracked from suppliers including farms to the store shelves and ultimately to consumers.
IBM said this could be done on the blockchain, which provides a permanent record of transactions that cannot be altered. This would serve as a viable alternative to traditional paper tracking and manual inspection systems, IBM added. "Advanced technology has reached into so many aspects of modern life but it has lagged in food traceability, and in particular in creating more secure food supply chains," said Bridget van Kralingen, senior vice president, industry platforms, at IBM in New York.
When applied to the food supply chain, product information such as farm origin details, batch numbers, factory and processing data, expiration dates, storage temperatures and shipping details are digitally connected to food items, and the information is entered on the blockchain at every step of the process, IBM said.
The information in each transaction is agreed upon by all members of the business network. Once a consensus is reached, it becomes a permanent record that cannot be changed, IBM said.
The record created by the blockchain can also help retailers like Walmart better manage the shelf-life of products in individual stores, further strengthening safeguards related to food authenticity.