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Now amost everybody has several credie cards.And it is a trouble for you finding out the card which you need.If we replace the magnetic stripe With a two-dimensional code,it will be more easy.An electronic card home can replace all of your credit card.
ZhengZhou Institute of Aeronauticak Industry Management
ZhengZhou City, China
Ding, pengkun
zhengzhou, China
Pengkun Ding
Lixiang Zhang