UIVisualEffectView Tutorial: Getting Started | raywenderlich.com

In this UIVisualEffectView tutorial, you’ll learn how blurs work on a technical level and how to add native blur and vibrancy effects to your own apps.

This is a companion discussion topic for the original entry at https://www.raywenderlich.com/16125723-uivisualeffectview-tutorial-getting-started

How do you create a blur overlay like the photos app for credit card or ID scanning? Since you previewed it on this article I was wondering if you had any material relevant to that function?