The New York Times' Rachel Cericola today offers a guide to preventing package thefts. The basic premise is that cameras, while a deterrent, don't stop thefts: all they do is film them.
One big delivery hassle is finding out that you won't be home when a package is due to arrive. Major carriers such as USPS, FedEx, and UPS offer text and email notifications so you can track the whereabouts of your packages.