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Bar coded cards

spaceage security systems

Bar codes are a series of patterns of black lines interspersed with white space. The thickness of lines and white spaces codify the information. Such patterns are read by bar code readers. There are various standards of bar codes that are internationally accepted. Around 10 such standard bar code patterns are in vogue. Since bar codes can be duplicated, for high security requirement this technology may not be the best option. However, by using a proprietary bar code algorithm one can ensure better security.

Bar codes are regularly used in super markets and are becoming a standard on various items to specify the price and product code. Bar codes are not much used for security application except where cost is a limitation.

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