diff --git a/hosts/by-name/moby/default.nix b/hosts/by-name/moby/default.nix
index 5d42515d..5cf468de 100644
--- a/hosts/by-name/moby/default.nix
+++ b/hosts/by-name/moby/default.nix
@@ -40,6 +40,7 @@
   sane.programs.sway.enableFor.user.colin = true;
   sane.programs.swaylock.enableFor.user.colin = false;  #< not usable on touch
   sane.programs.schlock.enableFor.user.colin = true;
+  sane.programs.swayidle.config.actions.screenoff.delay = 150;
   sane.programs.sane-input-handler.enableFor.user.colin = true;
   sane.programs.blueberry.enableFor.user.colin = false;  # bluetooth manager: doesn't cross compile!
   sane.programs.mercurial.enableFor.user.colin = false;  # does not cross compile
diff --git a/hosts/common/programs/swayidle.nix b/hosts/common/programs/swayidle.nix
index 9b77e7c2..e51ddc70 100644
--- a/hosts/common/programs/swayidle.nix
+++ b/hosts/common/programs/swayidle.nix
@@ -1,4 +1,4 @@
-{ config, lib, ... }:
+{ config, lib, pkgs, ... }:
 let
   cfg = config.sane.programs.swayidle;
   idleAction = with lib; types.submodule ({ config, name, ... }: {
@@ -22,6 +22,10 @@ let
     };
     config.command = lib.mkIf (config.desktop != null) "sane-open-desktop ${config.desktop}";
   });
+  screenOff = pkgs.writeShellScriptBin "screen-off" ''
+    swaymsg -- output '*' power false
+    swaymsg -- input type:touch events disabled
+  '';
 in
 {
   sane.programs.swayidle = {
@@ -35,9 +39,15 @@ in
       };
     };
 
+    config.actions.screenoff = {
+      command = "${screenOff}/bin/screen-off";
+      delay = lib.mkDefault 1500;  # 1500s = 25min
+    };
+
     sandbox.method = "bwrap";
     sandbox.whitelistDbus = [ "user" ];  #< might need system too, for inhibitors
     sandbox.whitelistWayland = true;
+    sandbox.extraRuntimePaths = [ "sway-ipc.sock" ];
 
     services.swayidle = {
       description = "swayidle: perform actions when sway session is idle";