Carrefour in France was using it already some 10 years ago. More current photo: https://theworklife.com/graham-miln/files/2013/12/2013-09-eink-tags-01.jpg http

Carrefour in France was using it already some 10 years ago. More current photo: https://theworklife.com/graham-miln/files/2013/12/2013-09-eink-tags-01.jpg https://theworklife.com/graham-miln/files/2013/12/2013-09-ei...