Sample code to read 2D QR barcodes using stock iOS APIs
When we build barcode integration to customer apps, we'll tend to start from a foundation like this.
This is just baseline code, it doesn't decorate located regions in any way, and is hard-wired to only recognize QR codes in the stream. It does works out a couple fine points, such as adapting to device rotation.
This pretty much deprecates older techniques we've used over the years like RedLaser.