[inkeddeveloper]

That’s an expensive solution for a simple problem. They currently just count all supplies in and all supplies out. It works.

[amelius]

If it's that simple, why don't they do it in the fashion industry?

[estimator7292]

Because there's no practical way to do it on the scale of an entire factory. It works for surgery because you only do a single surgery in a single room on a single person with a countable number of supplies.

Factories don't work that way.