QR code scanner
https://github.com/cozmo/jsQR provides nodejs implementation of a QR code scanner.
https://github.com/bitpay/cordova-plugin-qrscanner for cordova.
https://www.npmjs.com/package/cordova-plugin-qr-barcode-scanner
https://github.com/phonegap/phonegap-plugin-barcodescanner
https://www.npmjs.com/package/@zxing/library for other codes.
It seems ZXing also generates QR codes.
Use cases:
- Retrieve API settings and tokens for use on mobile devices (think web.whatsapp.com)
- Scan QR codes on mobiles with camera?