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Tips of barcode cards
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It is consisted of series of regular array strips and corresponding characters to memory information. The common barcode is printed by black and white strip. When ray irradiate on the barcode, the black strip and white strip produce strong contrast. Then they can read information by reflectivity.
The barcode card can be classified into one-dimensional code and two-dimensional code. The former is common, such as the daily commodity packing. Its memorizer is small, only can memory one code. When you use it, you must transfer data from computer internet. The two-dimensional code become popular recently, it can memory more information. Including character, picture, finger mark, signature and so on.. It can work without computer.
It is simply to produce barcode card. The common barcode could be printed and copied according to the request with low cost, but the reader equipment is expensive. It is different from magnetic card and IC card. The information can not be amended and has different standard.
The information which loads to barcode includes figures and letters that coding in terms of special standard.
Barcode coding technology involves barcode formula and standard. The formula is the main basis for making code standard and reading bar code.
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