[jl66]

When I was using lastpass I used the grid of codes and sometimes one time passwords. You could change the grid of codes everytime you want with a master password, and after some time using this grid you were obliged to change it to a new grid of codes. You could also use one time passwords and create new ones when you want.
The problem was using that master password. So, we are in the same problem "with a normal password". But at least we could use this master password 1 time every month or more. With this password you could also enable or disable the double authentication. When trying to use this master password you should confirm using another email of your choice.