这个程序用到手机上的摄像头，用来扫描条形码。
The app utilises the camera on a mobile phone, which scans the barcode.
如果打印出的条形码的质量很好，那么扫描条形码的成功率通常都会很高。
Scanning barcodes is generally highly successful provided the quality of the printed barcode is good.
扫描条形码，它会提取产品信息，包括网上和附近商店价格（以防你打算讨价还价）。
Scan a bar code and it retrieves product information, including prices atonline merchants and local stores (in case you are in the mood to haggle).
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