title: Can you determine what contact changes w/ registerContentObserver?
body: <p>Just trying to determine if there is an easy way to determine what contact changes when using registerContentObserver, or some other method? I can tell when the database changes, but not sure I want to check all the records each time an update/change happens.</p>
  
  <p>Basically if I have a list of contacts, and one gets updated via manual method (i.e. I change phone number for a contact or add a new contact), or automatic (say ActiveSync photo gets added, changed). I want to be able to A) Know that something changed, and B) Know what contact had some data changed.</p>
  
  <p>I am trying to look for certain users where I may be able to match their photos from a remote service. If more information gets added to a user account, I want to be able to examine it to see if it provides for a match. I don't want to schedule it though, I would like to do it after an update happens. </p>
  
  <p>Chris.</p>