The barcode you see on most retail products in the U.S. and Canada is known as a UPC-A, for universal product code, and the number comprises 12 digits. According to Geeky Camel, the first digit ...

Barcodes contain a checksum – an ingenious use of mathematics that even lends itself to a fun way to surprise your friends, ...

Here is the screenshot: You need to enter your Barcode Number and select your Barcode in Aztec, Data Matrix, EAN-8, etc. For QR code, you can directly encode your text with one limitation of max ...