As mentioned they will need to see the member's blue ID card. They have to enter the information into the database before they can print out the AP. I've done this several times and they have always asked for the membership card of the member. Yes, as others have said, they must live at the same address in order to qualify for the discount. Since my daughter is a member on our contract, we actually have two addresses that are allowed the discount. So she and her family also get the AP discount under her own address.