“Everyone will be issued a written card that they can put in their wallet that will tell them what they had and when their next dose is due," Kelly Moore, associate director of the Immunization Action Coalition, said Wednesday, according to CNN. -"Let's do the simple, easy thing first. Everyone's going to get that."
So this is how they’re gonna normalize carrying around tour “vaccine papers” - convincing people it’s to remind them of their second dose.
https://thehill.com/policy/healthcare/528532-administration-officials-detail-vaccine-cards-that-will-accompany