Good barcode overviews: http://www.barcodefaq.com/ Barcode generators: https://barcode.tec-it.com/en https://www.barcoding.com/resources/barcode-generator/ http://www.barcode-generator.org/ Android/Apple Apps: Look for “Scandit” in the Apple Store or Google Play store. They have a demo app that is very good at reading all varieties of barcodes, and identifying type and content.
Barcodes & Generators
Architecture
TOGAF TOGAF Publication Retail Retail Technology Standards OMG Retail Area Architecture Patterns Catalog of Patterns for Enterprise Application Architecture Software Design Patterns