Build SAPUI5 Cordova Barcode Scanner with OData Service | SAP Blogs
QR and Barcode Scanning - Ionic 5 Full Starter App
Tutorial: Creating a Barcode Scanner App With PhoneGap – Max Katz
GitHub - H2199/phonegap-plugin-barcodescanner-2-0-0: Barcode scanner is not working on 7.1 at the moment and Cordova can't install plugins from local path, so here is repo for the reader that works on 7.1.0