The contact array contains all data about the shopper.
<?php
array(
'id' => 1,
'title' => 'mister',
'firstname' => 'Max',
'lastname' => 'Muster',
'company' => 'Company',
'street' => 'Street No',
'zip' => 'ZIP code',
'place' => 'Place',
'country' => 'Switzerland',
'countryISO' => 'CH',
'phone' => '',
'email' => 'max.muster@example.com',
'date_of_birth' => '',
'delivery_title' => '',
'delivery_firstname' => '',
'delivery_lastname' => '',
'delivery_company' => '',
'delivery_street' => '',
'delivery_zip' => '',
'delivery_place' => '',
'delivery_country' => '',
'delivery_countryISO' => '',
);