I don't know why some people want keyless door entry on their homes, when criminals can buy those expensive laptop kits, clone the frequency and start up a prestige car in a minute.
There was another topic on the digi ID's, I'll say similar here.
Tony Blair wanted the digital ID system years ago, but there was too much opposition to it. Starmer does it now, picking the right moment so he can use illegal immigration as the reason to push it forward.
The mantra of data protection, is to minimise data, only collecting/processing what is relevant and delete data as soon as the purpose fulfilled.
This will do the opposite as the system will link through various databases that will hold your data indefinitely...
A card database to verify the card, a biometrics database to prove it's you, then I expect it will branch off to the NHS, DVLA, HMRC, DWP and banking systems eventually under the term of convenience, but really it'll be for tracking assets, transactions, health status etc. All these additional data pathways increasing vulnerabilities within the system.
The covid tracking app failed, so don't expect a good job done with a much more complex ID system.
The post office scandal, a good example when technology goes wrong and innocent folk are the victims.
I think 'function creep' will be inevitable, and it's uses will go beyond original purpose.