The POS client software starts on the mobile phone, notifying the store that the customer will be using his mobile phone as a bar code scanner and POS client.
POS 客户端软件在移动电话上启动，并通知商店该顾客将使用其移动电话作为条形码扫描仪和 POS 客户端。
To check out a book, students swipe a bar code placed inside the book at a computer station, which then asks for them to press their thumb on a fingerprint scanner.
学生借一本书，必须先由电脑扫描书本内页条形码，然后再由他在指纹扫描仪上按压自己指纹。
Bar code scanner is called bar code reader.
条形码扫描器被称为条形码阅读器。
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