Haha technically true, but I don't think that was the kind of device they were referring to. Even so, it is possible to use the same key on multiple yubikeys. Y

Haha technically true, but I don't think that was the kind of device they were referring to. Even so, it is possible to use the same key on multiple yubikeys. You generate a PGP key on a secure computer and then load that key onto multiple yubikeys. Then you use gpg as your ssh agent. But this is less secure than using keys generated on-device by the yubikey because your private key exists (hopefully temporarily) as a file on the computer where you generated it.