He went on to say there are situations where a 1D barcode is still the best solution, such as when a customer is trying to lower costs or has a low-capacity application requiring only a few characters. Ideally, 2D barcodes should be used somewhere between 10 and 20 data characters, depending on particular circumstances. Thousands of characters can be contained in an area no larger than a postage stamp, and many degrees of redundancy can be built into a 2D symbol. While it makes the symbol somewhat larger, it is remarkably secure.
“To determine if 2D is right for a certain application, distributors should ask customers how much information or data they need in the barcode, how much security and redundancy is needed and what type of space constraints they have,” suggested Gerling.
2D barcodes have become possible as auto scanning CCD and laser scanners have replaced the original light pen-style of scanners. Currently, most conventional CCD and laser scanners cannot read 2D barcodes.
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