Is there a label on a cardboard container that allows you to determine the number of boxes in a sling?

Question

Business Informatics

Good day to all.
A variant of calculating by some technical means how many boxes are reloaded from one place to another is required.
The option with crane scales is not suitable due to the large tolerance for the weight of reloaded boxes, therefore it is necessary to count the number of boxes themselves.
Recognition on video is also not a very good option, because. the sling can be different in rows and number in a row.
ps is ready to consider not only ideas, but also commercial offers.

Answer 1

as they wrote to you in the comments
1. either some ML with xs some accuracy
2. or a grandmother - let him count.
the third option is to glue 2 marks from the ends that reflect ultraviolet well.
Next, using cameras from 3 sides with a UV filter (the mark will glow strongly, and everything else will not get into the camera), we collect the video and count the marks using method No. 1.