I get pictures of the delivery on my front porch. I wonder if that is to prove to me that the package was delivered or to prove to Amazon that the delivery pers

I get pictures of the delivery on my front porch. I wonder if that is to prove to me that the package was delivered or to prove to Amazon that the delivery person delivered. If the photos are taken with a cell phone app/camera they will be tagged with location and time which would be pretty difficult to falsify. I don't always get these pictures so I suspect it is Amazon spot checking their delivery people.