The idea was to have shippers like FedEx or UPS ("LOGISTICS") install digital cameras at all package tracking checkpoints, so that when a package is scanned, a photo is taken and made available for all your obsessive package-tracking needs.
It would include a digital camera in the hand-held package scanner, so the delivery person could snap a photo of the package on your porch, as proof of delivery.
It turns out, of course, that the technology pretty much exists -- visual package tracking -- and is in use... just in specialized industrial applications, not on the mass consumer scale yet:
Visual package tracking system photo from Mobotix.
I expect someone like Amazon or Zappos will start rolling it out soon.
The next step, of course, involves clear-topped delivery trucks and UAVs, but I'll save that for the patent application.