Re: Too one-sided
Well, yes. That's what the law says. The scanners are there to be used when somebody who would be liable to arrest because there are doubts as to their identity can, instead, have their ID checked on the roadside.
If you can confirm that Mrs Miggins is in fact Mrs Miggins, then you open up alternative avenues such as a voluntary attendance interview, on-street charge or a PND, rather than nicking her just because you can't confirm her identity.
Unless Mrs Miggins has been arrested and fingerprinted, how the fuck does it do that? I don't believe the "Shithole formerly known as the UK" is quite at the fingerprints-taken-at-birth stage just yet.