Barcode scanners that use a series of straight or curved scanning lines of varying directions in the form of a starburst, a crosshatch pattern, which are projected at the symbol and one or more of them will be able to cross all of the symbol's bars and spaces, no matter what the orientation. Omni-directional scanners almost all use a laser. Unlike the simpler single-line laser scanners, they produce a pattern of beams in varying orientations allowing them to read barcodes presented to it at different angles. Being able to scan a barcode at various angles is what makes this type of scanner so attractive when scanning products that are moving.
Omni-directional scanners are most familiar through the horizontal scanners in supermarkets, where packages are slid across a glass or sapphire window. There are a range of different omni-directional units available which can be used for differing scanning applications, ranging from retail pos type applications with the barcodes read only a few centimetres away from the scanner to industrial conveyor scanning where the unit can be a couple of metres away or more from the code.
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