iOS 13 updates: Bluetooth + QR Code Scanner + NFC Tag | Beaconstac
Barcode Scanner app for iOS and Android - Orca Scan
How to Scan QR Codes on iPhone or iPad
Scan a QR code with your iPhone, iPad, or iPod touch - Apple Support
TEEMI Bluetooth Barcode Scanner with Optional Stand, 1d Laser Handheld Automatic Bar Code Reader for iPhone iPad Android Tablet PC, Mac OS X, Android, Windows 10 and iOS 14-TEEMI Barcode Scanner