Detect use of machine translation

During Trados' ELEVATE 2024 it was mentioned that besides turning off the Machine Translation tool within Trados and preventing translators from working offline there is no way to prevent translators from using MT. However, they stated that is was possible to detect when and where MT was used by adding a step to the translation workflow. It was not clear what step that would be or how it would work. Any ideas?

This is relevant for scenarios whereby MT should not be used for a translation and the assigned translators are work on the files outside of the Trados system, either in another CAT, MS Word, or otherwise.