CovidCertificate-App-Android VS hcert-trust

COVID Certificate Check (version 3.5.0): Check COVID certificates

When I get vaxxed or boostered, I can scan a QR code and then have a personalized code on my app. Workers can then scan my code and see whether or not I‘m vaccinated and if my certificate is valid. No way to fake it by yourself and the source code for the app is even open source (Here‘s the github repo lol). The only way you game the system is by bribing somebody with access to the system generating the certificate, getting them to enter your info without vaxxing you.

The app is officially available in all the major languages: https://github.com/admin-ch/CovidCertificate-App-Android/tree/main/wallet/src/main/play/listings

Even better, it's open source https://github.com/admin-ch/CovidCertificate-App-Android

Sweden. Their app is open source, stores and protects the covid certificate locally on the device but allows for tracking as well if it's permitted in the OS. It also doesn't have Google services framework.

COVID Certificate Check (version 2.7.0): Check COVID certificates

- iOS: https://github.com/admin-ch/CovidCertificate-App-iOS - Android: https://github.com/admin-ch/CovidCertificate-App-Android

The verification app needs to maintain a set of trusted certificates. More details on the trust model can be found here: https://github.com/ehn-dcc-development/hcert-trust/blob/main...

Infrastructure for code generation and signing is probably country-specific, though I imagine most countries will establish centralized systems dealing with this and integrate with other systems that track vaccination or test records on various levels (some countries delegate vaccination efforts to their states, others handle it nationally, etc.)