diff --git a/nixops/common-users.nix b/nixops/common-users.nix
index 961e8a64..6c6083d8 100644
--- a/nixops/common-users.nix
+++ b/nixops/common-users.nix
@@ -98,6 +98,20 @@
       "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBLDJI4GFLBmScbeR8Jh4Gi8A/2nuGlYtFTJVT+Es/bzdiPRk8DLG62T0hyRR+8LfHjbrCsDuYFNztT8hHGXd7h3xp3y2X7ArkJo8xUK5QxGd5D2Zn4ANfZTTVkoGlEHbFA=="
     ];
   };
+  twlaw = {
+    isNormalUser = true;
+    extraGroups = ["plugdev" "dialout"];
+    openssh.authorizedKeys.keys = [
+      "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBIZQ2NoLPL3diswjbmq8avEGm1HG1gLeeX610soP0jI8mBiV53fUShAAM33RxWhUoU502U2DHbjwuYowjwp+ODgOtAExWTCVtKV0XBv9uxSCz5S3sAzLieeG1+6+laGFzQ=="
+    ];
+  };
+  den512 = {
+    isNormalUser = true;
+    extraGroups = ["plugdev" "dialout"];
+    openssh.authorizedKeys.keys = [
+      "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBHwutGQ40zzb6LLFOcXPi52p5IdEvXz1KvWSCGOO5n2VmtAtHR+1yNLz9uMuHV9wNkwj0CABzL3JWl3klF3+1IhInxuq2qWmmxUK7ZQra6K/Qh01h8EsNi8FbhGMHgraPQ=="
+    ];
+  };
 
   dpn = {
     isNormalUser = true;