age restrict post

[Serpius]

Will be soon released

A part of the admin interface integrating the age restriction:

I have one question about verifying a user's age...

How can the age of a user be verified over the internet? 

In my country (USA), people must have a valid license that they are over the age of 21 to purchase any alcoholic beverages. That is done face to face.

How is it done over the internet? There has to be a face to face interaction for someone to show a license to prove they are over the age of 18 or 21.