Re: "the charge into a passwordless future"
>However they they do have drawbacks, such as their price and availability, being small enough to lose easily unless you've attached them to a fob of some sort, and requiring the device you use them with to have a USB socket .
It is these drawbacks that effectively mean there will never be a total replacement for memorable passwords.
Yes, I use password safes etc. but really critical stuff (like the key to the password safe) is in human readable and memorable form.