This Price Tag Shows Real-Time Cost of an Item in Bitcoin
Rehab's Sam Cox Shows Off 'BitTag'

Editor's Pick
How much does that sweater cost in Bitcoin? Depends. Bitcoin (and all other cryptocurrencies) are volatile, with values changing minute-to-minute, day-to-day. That's one reason retailers might be hesitant to adopt them as payment.
Sam Cox, a technologist at Rehabstudio London, is hoping to change that with BitTag, a physical price tag that updates itself automatically. The hardware shows the name of the product, price in real currency, and the real-time cost in Bitcoin. The price updates as soon as the value of the cryptocurrency changes -- so customers, and retailers, aren't caught off guard.
The tag is managed using an iPad app, and if it's shaken, will enable a QR code to activate which can be scanned, which would complete the transaction.