I'd like to try the passwordless feature but I do not want to lock-in my two-factor to a single device. I currently use Authy because it easily allows me to load it onto a desktop or another mobile device so I can continue to login to my accounts. It seems LastPass authenticator has a restore from cloud option but only after you go through a circuitous recovery process. Why not allow a more seamless way to load the authenticator onto other devices directly? Phones get lost. Phones break. Some just move to different phones regularly.