Common Questions

Here you will find links to pages that answer frequently asked questions.

• Who invented bar codes?
• How do I get a bar code for my product?
• Q & A

Bar Code Specifications

Here you will find detailed specifications of many popular bar code symbologies and where you can order the official specifications.

• UCC/EAN 128 specifications
• 2-Dimensional Bar Code.
• UPC and EAN specifications.
• Code 39 specifications.
• Code 128 specifications.
• Interleaved 2 of 5 specifications.
• Plessey Code specifications.
• Postnet [United States Postal Service Code].
• ISBN

Books, Magazines & Trade Shows

You can order books about bar code on-line here. The magazine list will lead you to web pages of leading magazines in the bar code and automatic identification industry. Many of these magazines are free to people in the United States. Several magazines have European issues and Asian issues that are free there.

• Magazine List. A list of magazines about bar code.
• Book List. A list of books about bar code.
• Trade Shows. A list of annual trade shows and their links.