GS1
GS1 standards for barcodes and RFID are your passport to national and global supply chains
GS1 sets the standards in how businesses and trade items communicate with one another and move along the supply chain. Creating optimized and successful barcodes is essential to the accurate flow of information, and the means to transforming the way people live and work.
The standards, specifications and different types of barcodes and labels can be confusing, but what you need is a good handbook to help things along and get you complying with GS1.