I think this is a good thought (and probably good advice for people to follow), but: Any solution that requires me to manually educate users will unfortunately not scale.
I need it to be as seamless as possible, where the only action required from users is to scan a QR code and sign up.
In other words, I need to meet my users where they are. Email is really hard to set up for most people, so I need to use the push notifications they typically expect to receive instead