A barcode is an optical machine-readable
representation of data, which shows data about the object to which it
attaches. Originally barcodes represented data by varying the widths and
spacings of parallel lines, and may be referred to as linear or
one-dimensional (1D). Later they evolved into rectangles, dots, hexagons
and other geometric patterns in two dimensions (2D). Although 2D
systems use a variety of symbols, they are generally referred to as
barcodes as well. Barcodes originally were scanned by special optical scanners called barcode readers; later, scanners and interpretive software became available on devices including desktop printers and smartphones.
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ReplyDeletethanks u
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I also read about QR codes on other blog and that coding technique is also good for security concern.
ReplyDeleteI really admire the above post,density of the security codes in 3d making clear difference.
ReplyDeleteI recently read about bar code and QR codes and one use for pricing and another for security purpose.
ReplyDeleteThanks for the precious information about Bar Code.Not an easy job to recognize bar code price on particular post.
ReplyDelete