Amazon.com : NETUM 2D Barcode Scanner, Compatible with 2.4G Wireless & Bluetooth & USB Wired Connection, Connect Smart Phone, Tablet, PC, 1D Bar Code Reader Work for QR PDF417 Data Matrix NT-1228BL :
Optic gate scanners will allow Metrolink mobile ticket holders to transfer to Metro Rail | The Source
Ticket Scanners
BarcodeChecker - Scan and check tickets with barcodes, admission control | Barcode Checker
ScanAvenger Wireless Barcode Scanner - SA9000 Series Pro
Gatwick Express introduce new barcode ticket scanners on gates - Global Railway Review
Eventic - Ticket Scanner Mobile Application by mtrsolution | CodeCanyon
Barcode Scanner SDK - Powerful & Flexible API | Scandit