How does money Metals Exchange work?

Could you elaborate on the functioning of the Money Metals Exchange? I'm particularly interested in how it facilitates the trading of precious metals. Does it operate as a traditional exchange, matching buyers and sellers? Or does it have a unique system that sets it apart from other platforms? Additionally, what are the steps involved in the trading process? Do investors need to register and maintain an account? I'd also appreciate an overview of the security measures implemented to safeguard transactions and user data. Thank you for your assistance in understanding the workings of the Money Metals Exchange.