Making a Smart Health Card QR Code app with Swift and UIKit - Part 3

Опубликовано: 23 Июль 2026
на канале: Coder Greg Ellis

This is Part 3 of a 6 part series on how to create an app to Scan a Smart Health Card QR codes. This episode will deal with writing the code to verify the cryptographic signature of the QR code.

Chances are you have had to present a QR code proving your vaccination status before entering a restaurant, sporting event, or other local establishment. This video will show you how to build an iPhone app using Swift using UIKit that will read/validate these QR codes and display the patient information for verification.

Tutorial Resources:
https://github.com/codergregellis/Sma...

Completed project:
https://github.com/codergregellis/Sma...

Links to documentation:

SecKey Apple docs: https://developer.apple.com/documenta...

Smart Health Card Specs:
https://spec.smarthealth.cards/

JWS specs:
https://datatracker.ietf.org/doc/html...

COVID CVX Codes:
https://www.cdc.gov/vaccines/programs...

Part 1
   • Making a Smart Health Card QR Code app wit...

Part 2
   • Making a Smart Health Card QR Code app wit...

Part 3
   • Making a Smart Health Card QR Code app wit...

Part 4
   • Making a Smart Health Card QR Code app wit...

Part 5
   • Making a Smart Health Card QR Code app wit...

Part 6
   • Making a Smart Health Card QR Code app wit...

Although following this tutorial will result in a complete app that is ready for submission, this is for educational purposes and should not be submitted to the App Store.