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How to interpret the relationship between laser and bar code?
The "eyes" of barcode reading are barcode scanners. At present, its scanners can be divided into laser scanners and non-laser scanners. The laser reader can scan automatically, with a wide field of view, and it is a non-contact scanner, which can accurately read the bar codes of various commodities, bringing good news to housewives who often queue up in front of the checkout counter.