Anything with a Delivery Confirmation, insurance, certified, registered, etc is scanned in at the receiving Post Office unit, at major hubs along the way, at the final destination post office and then again when it's delivered. Just did an online tracking of a package mailed from CA to here in VA and it showed all those steps, including when I scanned it received (I work part-time as a rural carrier and was working the day it came in - my maillady gave it to me and I scanned it delivered). Now if the mail carrier inadvertently delivers to the wrong address . . . . .