The No Cloning Principle of Quantum Mechanics

The security of this key distribution protocol is highly relevant to this, I think, no cloning principle of quantum mechanics. And there are some uncronable other uncomfortable primitives that are also relying on the not cloning principle. There is something called quantum position verification, where some ruler is trying to prove that it's set in a particular location. The bad thing about this is scheming the classical word is that because classical information is always copiable, if you have multiple multiple malicious provers, they can break such tech. With quantum information again, you can break such a tech.