此版POS系统还在征求意见中详细地https://en.bitcoin.it/wiki/Casascius_Bitcoin_POS_system
实物图例供参考
操纵较方便F带数字键即可,界面显示当前行情.
二维码打印出来.POS系统硬体代码下载地址https://github.com/casascius/vfbitcoin