Still, Delerm is quick to point out that – culturally speaking – Chinese customers are more prone to trying out new technologies. Carrefour plans to be tracking 20 % of its products with blockchain technology by 2020 . The French supermarket chain traces about 80 % of its own - brand products via distributed products after launching a project to track eggs , chicken and leafy vegetables last year . Blockchain is hailed as providing greater visibility into a person 's origins and has broad applications ; it 's even being used to combat slave labour in China , where children are used to mine cobalt for manufacturers of electric vehicles .
Carrefour plans to be tracking 20 % of its products with blockchain technology by 2020 . The French supermarket chain traces about 80 % of its own - brand products via distributed products after launching a project to track eggs , chicken and leafy vegetables last year . Blockchain is hailed as providing greater visibility into a person 's origins and has broad applications ; it 's even being used to combat slave labour in China , where children are used to mine cobalt for manufacturers of electric vehicles .