Not necessarily. An eID can also just make a call to the eID issuer, identifying the person, and then a callback to the service indicating that the identified

Not necessarily. An eID can also just make a call to the eID issuer, identifying the person, and then a callback to the service indicating that the identified person complies with certain requirements like age. Think of it as a bouncer at the door that does not divulge any details to the club owner. ;)