How to buy a measurable data token?

Could you please elaborate on the steps involved in purchasing a measurable data token? I'm particularly interested in understanding the process from start to finish, including where to find reputable exchanges or marketplaces that offer such tokens, what kind of verification or identification might be required, and any potential risks or considerations I should be aware of before making a purchase. Additionally, could you also provide some insight into the benefits of owning a measurable data token and how they might be used in various industries or applications?