Bridgestone's e-paper

"Japanese tire manufacturer Bridgestone is producing these e-paper price tags as part of a new billing system being rolled out to Japanese retails stores. Using 'Electro Liquid Powder,' the displays have a quicker refresh time than earlier-generation e-paper solutions and are able to be printed on a substrate just 0.12mm thick."
For further intel, check out:

E-paper @ gizmodo.