title: How does Square's CardCase app automatically populate the user's details from the address book?
body: <p>Square's new card case iOS app has a "Create Account" feature. Tap it and it shows a form PREPOPULATED with the user's entry from the Address book.</p>
  
  <p>How is this possible? Anyone know? I thought this was unpossible, to get the user's info this way. It's not an iOS 5.0 thing, afaict.</p>