BarCode Scanner Interfacing with Arduino + USB Host Shield Module + 16x2 LCD Display - YouTube
Barcode Scanner Integrated to Arduino | LEARN @ CIRCUITROCKS
Amazon.com : Barcode Scanner Module, 1D/2D Codes Reader Decode Barcode, QR Code etc Onboard Micro USB and UART Interface Plug into a Computer Directly or Other Device Onboard Light Source can Work
QR barcode scanner for Arduino: Use QR barcode scanner with Arduino
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
$68.99 - Barcode Scanner - CCD Camera (Arduino & Raspberry Pi Compatible) - Tinkersphere