In the podcast Epicenter Bitcoin 101 Ryan descibes a method of selectively disclosing information to a third party ( ~50:00 - 55:00).
In below description we use a simplified version of a Person to demonstrate the concept.
{
name: 'Jan-Pieter Zoutewelle',
birthDate: { value: '18-02-1991', subValues: [{'above21': true, 'above18': true}]},
birthPlace: 'Ridderkerk, The Netherlands'
}