That is a good thing in my opinion.
This is relying on THEM to have a reader to produce a QR that they can scan.
You could look at waht @Az_F suggested, if that doesnt work for you
Alternatively you could look at a redirect to a webpage, using a link in an NDEF message.
OR
one of these
You could just have the QR code saved on your phone, or I assume and app for Covid tracing? You are really just adding in a cool factor with an implant.
If it is an App you could also use you implant to open the app…