A computing apparatus includes a primary keyboard and a primary display, which are respectively arranged to accept input from a user and to display information to the user. An auxiliary display is arranged to display auxiliary information to the user when the apparatus is in a switched-off operational state, and to hide the auxiliary information when deactivated. An activation controller is arranged to monitor the primary keyboard when the auxiliary display is deactivated, to detect an activation code comprising one or more keystrokes entered using the primary keyboard, and to activate the auxiliary display responsively to detecting the activation code.