Barcodes with iOS: Bringing together the digital and physical worlds (2015)
Chapter 1. Barcodes, iOS, and you
Chapter 2. Media capture with AV Foundation
Chapter 4. Passbook, Apple’s digital wallet
Chapter 5. Generating barcodes
Chapter 6. Getting metadata for barcodes
Chapter 7. Putting barcodes in context
Appendix A. History of the UPC
Appendix B. GTIN prefix ranges
Appendix C. GS1-128 application identifiers