article published July, 5, 2017
https://edgylabs.com/2017/07/05/japan-no-bitcoin-tax-stores-accept-cryptocurrency/
"AirRegi is a widely used, tablet-based point-of-sale app in Japan. Currently, around 260,000 establishments, stores, and commercial facilities use this proprietary app to accept payments from their clients."
It makes sense that a transition to accept bitcoin would be underway for more US-based stores.
It would be great if more retailers will indeed accept bitcoin but we all know the on going problems with bitcoin. Slow confirmation times, volatility and on top of that the system can be a little bit confusing for the masses, so it still something that retailers should reconsider.