if the scanner, or technical thing-a-me-jig, has a built in camera that logs the photo to the tracking number then I can't see it taking more than a ten seconds, half a minute at the most.

I know that when I go to Bunnings to buy timber I often take a photo of the yellow price tag on the shelf of the timber so that the counter person can enter the FineLine number (F/L) of the timber to bring it up on the register screen rather than having to search through a folder with their timber range F/L numbers (see example below).

Only takes me a few seconds and I imagine it could be the same for taking a photo of a safe dropped parcel.