3 stars: Reading the description helps.... its for businesses etc. This is not for the customer to show their QR code - its not available yet. \
5 stars: Although I don't need to use this app because I don't own a business, I tried it, and it works as intended. People leaving comments as to why this is not giving them a QR code really need to read the news from time to time, or maybe just read the IMPOSSIBLE TO MISS instructions that this app has, and that clearly explain its use.
5 stars: I'm satisfied with the nature of the program. It's a quick way for someone to check your QR code to see if it's valid. It doesn't store your info, or send it off the phone. It just checks the cryptographic signature of the data in the QR code, and shows your name and date of birth to be cross-checked with your id.
3 stars: As a business owner, I would like to see this app available to older model phones. It is not available to Samsung S3 or Apple 5C, for example. Instead of asking FOH staff to upgrade their phones or purchase another piece of equipment (ie. QR scanner or phone) that all staff can use. Other than that, it seems like a good app. Thoughts?
4 stars: I will be using this app to verify vaccination status of patrons where I volunteer. The results will be more reliable than checking easily-forged PDFs. My only complaint so far is that the app does not reliably detect a QR code compared to the stock camera app (Moto G9+, Android 11). A software update might be needed...