12月3日的Plain Silver应用程序分析

Plain Silver lets you pay for coin-operated laundry with your phone. This app works on all laundry machines with the Plain Silver logo. Even if the laundry room is deep in the basement, it still works. Plain Silver talks to the machines via Bluetooth - so it works even when you have no internet connection. Just preload Plain Silver with 10 or 20 dollars, and you're set to go.