The security of Yubikeys (and RSA tokens, and most other two-factor authentication devices) rely on a shared secret between the authentication server and the de

The security of Yubikeys (and RSA tokens, and most other two-factor authentication devices) rely on a shared secret between the authentication server and the devices themselves. If you wanted to authenticate your own VMs with your V-Key, we'd need to either share the programming secret with our customers, or provide an authentication service that we pre-configure the VMs to back onto. The former would compromise the security of the keys. The latter is a possibility, but not a high-priority one at the moment :) The keys do have a second authentication slot into which you can program your own fixed password, or another two-factor secret from which you can do your own auth on your own server (to use the second configuration you hold the button for about 4-5 seconds so it's not as convenient).