Also the little rectangular pieces of paper that are made when any sort of punch card is used for data input purposes.

当使用任意类型的打卡机输入数据时，纸张上也会出现小矩形。

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Small businesses are looking at an increasing number of digital loyalty programs, which replace the traditional paper punch card and help merchants reward their repeat customers.

FORBES: Swipely Expands Credit Card-Based Loyalty Service