As one of probably many on this site waiting for return of a QR code from the French government, I was happy to see the following portion of this note from SNCF. It’s information about checking for health pass proof on the trains and it says: The validity of the health pass will be checked by flashing the QR code…OR by visual verification for supporting documents without a QR code.
Here’s a link to the actual site: https://www.oui.sncf/aide/situation-sanitaire-coronavirus
It’s in French. When I move it to the English portion of that site, it takes me to a screen that doesn’t match the French screen and I assume people want to see the specific language of the exception for the QR codes.
Obviously it’s better to have the QR code but at least that note from SNCF offers an avenue for the tourists that have a snafu occur and don’t have the code.