QR barcode scanner for Arduino: Use QR barcode scanner with Arduino
How Can I use my Barcode scanner to my Arduino? with Serial RS232 - Project Guidance - Arduino Forum
Barcode/QR Code Reader using Arduino & QR Scanner Module
Connecting barcode scanner to Arduino using USB Host Shield « Circuits@Home
Barcode/QR Code Reader using Arduino & QR Scanner Module
Amazon.com : Waveshare Barcode Scanner Module 1D/2D Codes Barcode, QR Code Reader Onboard Micro USB and UART Serial Port Directly Plugged into Computer : Office Products
Connect Barcode Scanner to Arduino DUE - Project Guidance - Arduino Forum