411
Using inside info, iPhone thieves arrive at your house right after FedEx
(arstechnica.com)
This is a most excellent place for technology news and articles.
It's in the article. Most of the time they don't, but in areas where theft is an issue they do. But I'm guessing they haven't caught on yet to change the signature policy.
It’s unfortunate that the signature requirement isn’t a standard policy for all.
Nothing would ever get delivered.