I know even in the US when stores started scanning physical drivers licenses people were / are irked when we're talking about validating a birth date... I think just presenting what the user wants is a good proposal.
Whenever I have purchased something that is age restricted, I have just held my license and held on to it, and not let them scan it.
The insecurity of the POS systems means I don't trust them to not store that data and let it be leaked/stolen.
I know even in the US when stores started scanning physical drivers licenses people were / are irked when we're talking about validating a birth date... I think just presenting what the user wants is a good proposal.