Bittag is the brainchild of London-based hardware prototype designer Samuel Cox, BitTag attempts to solve this existing bitcoin pricing issue by automatically updating the price of bitcoin on its display using wireless technology.
— Samuel Cox (@SamuelCox) January 30, 2014
Merchants manage their BitTags through an accompanying iPad app. The app is used to set up the BitTags, and can process transactions when the device is placed against its screen, as shown below.
Read the full story in Coindesk here.