please tell me the logic behind bar code and the type of bar code in the industry . 2d and 3d barcode . some are telling U39 format . what are these concept and how we can print the bar code to be read via barcode printer .
I have develop queue management system and trying to used the barcode . I hope I can used the pre printed barcode to use for my purpose without generation barcode from the system . please advice the best way to do that