CovidCheck.lu

The app does what it was designed for, but the option to store one or more certificates would make it a lot better and usefull. It is not easy for everyone (especially older people) to login to myguichet.lu, download a pdf and store it on a smartphone. Adding this option would make life easier for everyone. Or just create a second one for storing the certificate, like Switzerland did.

Should evolve! Works fine for the basic functionalities, but more features should/must be added (and they do exist in similar apps) like store your own QR code/certificate and scan from images. Probably the short lead time is a valid argument, but Germany managed to get a more complex app. Update: 3 months later, still no certificate storage possibilities, why? It was announced before summer... This would be a real improvement!

The QR code reading is very sensitive to low lighting, to slight angle changes, anything but perfect alignment and lighting In similar situations, vaguely pointing my phone in the general direction of the qr code with another qr code reader (eg, the built-in Samsung qr code scanner) is enough to read the code, but those apps do not link to the database and show the result. However, this shows that the problem is that this app is written by amateurs, not that there isn't enough light.