What relationship does providing citizens a way to identify themselves, sign documents, to having cavity searches ... can you show how providing a nationwide digital certificate scheme leads direct to random cavity searches??

It's like if someone says "I fancy Chinese takeaway" and you don't want any you say "enjoy your cavity search" as if that's a natural outcome.

Explain.

Moreover, how is identifying yourself to the police bad? Sure if you live in a fascist dictatorship, but in a Western democracy?