Comment by brazzy

I worked on an application used in a paper factory that produced paper for banknotes. The entire point of the application was to make sure every single sheet of the paper was accounted for. There were unique barcodes printed on it as soon as it was dry enough to do so, and tracked throughout the production process.

Fun fact: confirming the proper disposal of damaged sheets required special privileges, and the name for the user role was "destroyer". So someone could rightfully claim their job title was "destroyer".