Civil liberties groups have expressed concern that the cards given to people after they have had a vaccination could result in them being misused in the future.
Today health minister Vaughan Gething announced that people who have received a coronavirus vaccine in Wales will be given a card detailing the date and type of the vaccination following the approval of the Pfizer/BioNTech's Covid-19 vaccine by the independent Medicines and Healthcare products Regulatory Agency (MHRA).
In a written statement Mr Gething said: "Those receiving a COVID-19 vaccination will be given a credit card-sized NHS Wales immunisation card which will have the vaccine name, date of immunisation and batch number of each of the doses given handwritten on them.
"These will act as a reminder for a second dose and for the type of vaccine, and it will also give information about how to report side effects."
However the human rights organisation Liberty has condemned the move as a thin end of a wedge.
Grey Collier, Liberty advocacy director, said: “Any form of immunity card raises more questions than it answers. It is currently unclear how these cards will be used, and whether people could be asked to use them to prove they have immunity."
They added that the use of the cards could evolve meaning that people are not able to access essential services.
"Once cards like these have been created it would be easy for their use to be extended so they can be used like an immunity passport," said Grey Collier. "This could result in people who don’t have a card potentially being blocked from essential public services, work or housing – with the most marginalised among us hardest hit.
“This has wider implications too because any form of immunity passport could pave the way for a full ID system – an idea which has repeatedly been rejected as incompatible with building a rights-respecting society.
“We have always supported proportionate action to protect lives, but that must not come at the expense of our rights and freedoms.”
Mr Gething was questioned in the Senedd about the issue by Conservative MS Andrew RT Davies who said: " Can you confirm that that is not an ID card, and it doesn't have any legal status, and it is merely an information card that will assist the person who is presented for vaccination to obviously have the follow-up, and once the follow-up vaccine has been administered, it will have no further status in law?"
Mr Gething replied that "this is not an ID card" and "it was never intended to be".
He added: "It's not within our powers to do it. This is simply about reminding people when to return to have their next dose of the vaccine, to make sure they do receive proper coverage for themselves and, of course, it'll make a difference to people they're in contact with.
"So, there's no other agenda here are all. This is just about making sure we make best use of the vaccine and the opportunity it provides for all of us."