UPS also has the "in person signature" option. I had the elder Predator the other day and the Fed Ex guy actually call me on my cell and I talked him into leaving it on the patio.
It's kind of insane, since my patio is sunken, you can drop something into it, but no one can see something on it, nor could they get out if they jumped down to steal a package.
During the heavy rains the FedEx guy put the package in a plastic bag and heaved it up onto the upper patio. I never go out there, so luckily he left that fact written on the door hanger. I'm glad it wasn't anything too fragile though.