So, in this step we’re going to ask the user to enter their name and email address in a form, use those two pieces of information to generate a QR code identifying them, and scale up the code without making it fuzzy. It’s trivial to make the QR code larger, but to make it look good we also need to adjust SwiftUI’s image interpolation. However, there’s a problem: the image it generates is very small because it’s only as big as the pixels required to show its data.
Core Image lets us generate a QR code from any input string, and do so extremely quickly.
