A method of reading and decoding scrambled and encoded two dimensional data represented on a sheet of media as a dot matrix includes the step of detecting a data area on the sheet of media by detecting {HEAD ~ targets} on {TAIL ~ the sheet} of media 
A method of reading and decoding scrambled and encoded two dimensional data represented on a sheet of media as a dot matrix includes the step of detecting a data area on the sheet of media by detecting { HEAD ~ targets } on { TAIL ~ the sheet } of media
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