Notification for iPhone backup?

How can I get notified when someone else takes my iPhone and makes a backup on their computer using iTunes while I'm away? Is there anyway to get a notification?

Keep your iPhone on you at all times.

I don't know about a notification. You should be able to add a passcode to your iPhone. When a person connects it to a new computer, the phone will pop up a message asking if you trust the computer. A person can't choose 'Trust' if the phone is locked.