The verge has an article on Amazon taking pictures of front door deliveries. https://www.theverge.com/2018/3/1/17068480/amazon-photo-on-delivery-new-feature-front-porch
“Amazon has been quietly rolling out a new program over the past few months where delivery people will use photos to confirm your package has been delivered. The photo of exactly where the package has been placed will be included in the notice of delivery so Amazon users know when it arrived and where it is, as first spotted by USA Today.”
Most think about here is the proof the package is delivered. But it is also a quality control event to document package delivery and information about the delivery site. The information can be used for quality control and other ideas to improve the quality of delivery.
Once I received items where the contents of the box where not what I ordered. Seeing the package could confirm whether it was possible that the label got put on the wrong box.