In many cases, there's hesitancy to use the phone as the other alternative. Number one is that some people don't like to mix personal and business on their phones. They just want the phone for personal use. And number two, at some sites, it is banned on the shop floor. They don't want phones on the shop floor, or we have highly classified spaces here, in which the data is extremely confidential, and there's no possibility. It's physically secured to the point where the employees that manage that data cannot carry their phones into that space. So that being the case, the phone is not an option. So, we give YubiKey to them as an option.
