Scanning QR codes with Xamarin.Forms - Lindsey's Blog
Mobile Software Development.: Creating Custom Overlays in Xzing Barcode Scanner using Xamarin Studio and C#
Xavier Perseguers on Twitter: "Creating a custom overlay in #XAML for @redth 's https://t.co/WJv1HVERvT.MobileBarcodeScanner turned out to be challenging :) #iOS is working, will test #Android later on. https://t.co/9mmS4BJCR0 by @rid00z is
iOS scanning not working (OnScanResult never fired) · Issue #967 · Redth/ ZXing.Net.Mobile · GitHub