What is the correct way to associate with a ABPerson?
<p>In many of my apps, it requires associating some data with a contact in addressbook. What I used to do is save the record id of an ABPerson and use that id to pull information upon each app launch. However, more and more I find that this approach is wrong because many times a user will use a service like mobileme where the addressbook is wiped and resynced. This causes the record id to change and all associations are lost. The user will have to go through each one and re-link them. </p>

<p>What is a better approach to holding a robust pointer to addressbook entries?</p>
