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I: Scanning guns can be divided into wired scanning guns and wireless scanning guns. Wired scanning guns, as the name suggests, are scanning guns that transmit data through fixed cables; wireless scanning guns generally use Bluetooth and WIFI, and some high-end brands have fixed transmission technology.

II: Wired scanning guns are generally used in work scenarios with a relatively small range of activities, such as the convenience store cashiers that are common in our lives, etc., and wired barcode scanning guns can be seen. But if we are in a large warehouse, it will be very inconvenient to use a wired scanner, such as an item weighing several hundred kilograms, it is impossible for us to move it every scan. And once a large range of walking is impossible to push a cable to move. In terms of price, most products of wireless scanners are higher than wired ones, but the value it brings is much higher than its price.