Nope. Nope. Nope.
Given this country's track record with big IT projects: hugely expensive Pingdemic app to make one person extremely rich, postmasters being sent to jail, all because "computer says no..."
They won't even bother with the "card" - it will be digital ID. Wasn't that knight in shining armour Sir Farage who's going to save us from the immigrants touting a "Britcard" or something, so that if you're in a small boat, you can wave it, to avoid being mistaken for somebody trying to sneak in?
We will be coaxed into accepting it. It will be sold as a "convenience" - like Alexa and similar devices so you can pay to be spied on in your home, like the NHS app so you can get "pinged" more easily, like a smart meter so electricity can be rationed more easily (mark my words), and like the vaxpass, so that you can just wave it to show that you complied with the state control. It would begin with being "voluntary", but with the usual creeping authoritarianism, it would become compulsory.
And I am extremely wary of Alexa-like devices, because here is a scenario I do foresee: Alexa-like devices might become compulsory as the only way to access the internet (which by then will be essential to do anything at all, such as food shopping), which will speak government propaganda directly into your home, which cannot be silenced. The "emergency alerts" are a step in this direction. George Orwell foresaw this with telescreens.
I'm sure Tony Blair said in 1997 "I want every household to have the internet". He wasn't being altruistic. He foresaw something.