Sorry, but..."authentication" for what purpose? I'm able to get passwords and such sent to me via email, or they call my landline and a bot reads a number out to me, if I am filling out some kind of application or form. Physical token, I'm afraid I don't even know what that means. Think of me as Ishi, or a time traveler, or someone from another planet. You wouldn't be far from the mark. I live in the woods, I can make fire without matches, and if required to I can forage off of what I find on the land. What I can't do, is fit into the modern world very well. Nor do I particularly want to. I truly dislike cellphones, and I hate what they have done to our children. But that is not the fault of the machine. It comes back to people.