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Providing on-line non-downloadable computer software and computer programs for generating two dimensional code; providing on-line non-downloadable computer software and computer programs for enabling barcode scanners, two dimensional code scanners, barcode handy terminals, two dimensional code handy terminals, printers, laser markers to read barcode, and laser markers to read two dimensional code; computer software design, computer programming, or maintenance of computer software; consultation services in the field of technical advice relating to performance and operation of two dimensional code generating computer software, barcode scanners, two dimensional code scanners, barcode handy terminals, two dimensional code handy terminals, printers, and laser markers