You can use a hardware token on multiple machines.
My bank, for example, has both your password entry and the private keys on the token. All you ever enter onto a computer or smartphone is the one time password, even when using their smartphone app.
Sounds like a promising piece of technology. What I'm more impressed with, though, is the scientific journalism.
It's balanced, accurate, accessible, representative, and leaves out the hyperbole. I would pay for science journalism that read like this. Even better if it came with some biased, inflammatory, hyperbolic editorials on the side.
My bank, for example, has both your password entry and the private keys on the token. All you ever enter onto a computer or smartphone is the one time password, even when using their smartphone app.
I like my bank.