I personally store a printed copy of an emergency-only SSH key (ed25519) in a safe, also formatted as a QR code to quickly import it if something goes wrong. Th

I personally store a printed copy of an emergency-only SSH key (ed25519) in a safe, also formatted as a QR code to quickly import it if something goes wrong. The key is short enough to fit within a QR code length limit, and I can quickly scan it to my computer using my 2D barcode scanner. I just import my `authorized_keys` that I keep up-to-date on my new server when I do the initial setup.