diff --git a/content/keys.md b/content/keys.md
index a305f0a..37c2696 100644
--- a/content/keys.md
+++ b/content/keys.md
@@ -123,7 +123,14 @@ If you need to give me shell access to your server or similar, please
 use the following public SSH key:
 
 ```txt
-ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPd/4fQV7CL8/KVwbo/phiV5UdXFBIDlkZ+ps8C7FeRf
+sk-ssh-ed25519@openssh.com AAAAGnNrLXNzaC1lZDI1NTE5QG9wZW5zc2guY29tAAAAIFWZGLov8wPBNxuvnaPK+8vv6wK5hHUVEFzXKsN9QeuBAAAADHNzaDpzYW1zYXB0aQ== ssh:samsapti
+```
+
+If your SSH server does not support FIDO2-protected SSH keys, use this
+fallback key instead:
+
+```txt
+ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPd/4fQV7CL8/KVwbo/phiV5UdXFBIDlkZ+ps8C7FeRf cardno:14 336 332
 ```
 
 <details>
@@ -135,16 +142,18 @@ ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPd/4fQV7CL8/KVwbo/phiV5UdXFBIDlkZ+ps8C7FeRf
   -----BEGIN PGP SIGNED MESSAGE-----
   Hash: SHA512
 
-  ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPd/4fQV7CL8/KVwbo/phiV5UdXFBIDlkZ+ps8C7FeRf
+  sk-ssh-ed25519@openssh.com AAAAGnNrLXNzaC1lZDI1NTE5QG9wZW5zc2guY29tAAAAIFWZGLov8wPBNxuvnaPK+8vv6wK5hHUVEFzXKsN9QeuBAAAADHNzaDpzYW1zYXB0aQ== ssh:samsapti
+  ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPd/4fQV7CL8/KVwbo/phiV5UdXFBIDlkZ+ps8C7FeRf cardno:14 336 332
 
   -----BEGIN PGP SIGNATURE-----
 
-  iHUEARYKAB0WIQR1jxoXyANf2TkSyeLLu+c3HoHE6gUCYsQ0LAAKCRDLu+c3HoHE
-  6lEJAQD0T22AX57+RCqdmhfqOGHLns58k7IOEdhH/xz8jRxYBgD/dJyi6mwrDVZY
-  fCv+jdgoLDtMr83OKq9fzr0yG9Qh9QM=
-  =KEVz
+  iHUEARYKAB0WIQR1jxoXyANf2TkSyeLLu+c3HoHE6gUCZBC37AAKCRDLu+c3HoHE
+  6r2nAQCoBJvJnlUE8gv/vSRL+2YvuxDxNESKXnkdZ0RBW+USxgD9E9CE4QIFMj5U
+  +COZ61aYDmdNlcmytPviQ+g2k8SefQA=
+  =h3YT
   -----END PGP SIGNATURE-----
   ```
 </details>
 
-You can download it [here](/ssh.pub).
+You can download my SSH key [here](/ssh.pub), and my fallback key
+[here](/ssh_fallback.pub).
diff --git a/static/ssh.pub b/static/ssh.pub
index b45e3d5..d4aa9ae 100644
--- a/static/ssh.pub
+++ b/static/ssh.pub
@@ -1 +1 @@
-ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPd/4fQV7CL8/KVwbo/phiV5UdXFBIDlkZ+ps8C7FeRf
+sk-ssh-ed25519@openssh.com AAAAGnNrLXNzaC1lZDI1NTE5QG9wZW5zc2guY29tAAAAIFWZGLov8wPBNxuvnaPK+8vv6wK5hHUVEFzXKsN9QeuBAAAADHNzaDpzYW1zYXB0aQ== ssh:samsapti
\ No newline at end of file
diff --git a/static/ssh_fallback.pub b/static/ssh_fallback.pub
new file mode 100644
index 0000000..523aa59
--- /dev/null
+++ b/static/ssh_fallback.pub
@@ -0,0 +1 @@
+ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPd/4fQV7CL8/KVwbo/phiV5UdXFBIDlkZ+ps8C7FeRf cardno:14 336 332
\ No newline at end of file