So i have just finished the latest book in the laundry files, a series that is a mix of H.P lovecraft, James bond, and the offices. One of the tools they use are warrant cards, badges that compel obedience from anyone who has sworn an oath to serve the government be they military, police officers or bureaucratic civil servants.
This got me wondering could a Rosette be used like that, could you imbue it with a reflection of the emperor's light, or some other sanction psychic power that would either compel obedience or at least put it authenticity beyond question.
I know that it's "your story" so you can put it in if you want but i was just wondering if it would be lore breaking and how far out it would be from the 40k theme.
thank you for your thoughts