Keyboard & Mouse Lock For Mac

The following information is also available from within the MollyGuard application and can be accessed at any time by selecting the Help menu item.


Simply locate the MollyGuard.dmg file you downloaded, double-click it to mount the disk image, and then drag the MollyGuard app contained therein to your Applications folder.

Just drag MollyGuard to your Applications folder That's all there is to it

If, for whatever heart-breaking reason, you want to uninstall MollyGuard, you only need delete the program from your Applications folder. You can do that by either dragging the application to the Trash, or by selecting the application and hitting cmd+delete on your keyboard. For bonus points, you may also delete the preferences file found at ~/Library/Preferences/com.imt.MollyGuard.plist.


In order to function, MollyGuard requires that you have access for assistive devices enabled. In OS X 10.8 and earlier, go to System Preferences > Accessibility and tick the Enable Access for assistive devices box. In OS X 10.9, go to System Preferences > Security & Privacy > Privacy > Accessibility and tick the box next to the entry for MollyGuard.

To launch MollyGuard, just double-click its icon in your Applications folder. Because MollyGuard is a menu bar application, you will not see its icon in your dock. Instead, look for MollyGuard's menu bar icon, by default a black circle, in your menu bar. You can access the application's menu and settings by clicking this icon with your mouse.

The MollyGuard menu bar icon, by default a black circle The MollyGuard menu bar icon, by default a black circle, shown here on the far left

The MollyGuard menu bar icon indicates whether MollyGuard is locked or unlocked. When MollyGuard is locked, the icon is red and keyboard (and, optionally, mouse) input is not accepted. The icon is black when MollyGuard is unlocked. Likewise, the information presented in the MollyGuard menu changes depending on the lock state.

The appearance of the icon and menu when MollyGuard is unlocked The appearance of the icon and menu when MollyGuard is unlocked
The appearance of the icon and menu when MollyGuard is locked The appearance of the icon and menu when MollyGuard is locked

When MollyGuard is running, you can lock and unlock the keyboard with the ctrl+opt+cmd+L keyboard shortcut, or via the Lock or Unlock menu item.

HotKeys: ctrl + opt + cmd + L This keyboard shortcut will lock and unlock MollyGuard

Important Note

MollyGuard "sleeps" whenever your screen saver is active or your computer sleeps. This means that even if MollyGuard is in the locked state, you will still be able to dismiss the screen saver with your mouse or keyboard. It also means that if your settings require you to enter your password after your screen saver begins or your computer sleeps, you will be able to do so. MollyGuard will begin functioning again after you are returned to your desktop.

Setting Up MollyGuard to open when you login

You can add MollyGuard to your login items and it will open automatically every time you log in. This can be desirable if you plan to make frequent use of MollyGuard, because you needn't remember to open the app yourself.

To add MollyGuard to your login items, go to System Preferences > Users & Groups, select your user account and then click the Login Items button. Click the [+] button below the list of login items, navigate to your Applications folder, select MollyGuard and then click the Add button in the lower-right corner.

The Login Items list Click the [+] button, Johnny


The Preferences... menu item allows you to customize MollyGuard's behavior and appearance (to a small degree). A brief explanation of each preference setting follows.


The options in this section control the behavior of MollyGuard when locked.

Lock keyboard only

This is the default setting. Lock keyboard only means MollyGuard will lock the keyboard, but allow the mouse to function normally. MollyGuard can be locked or unlocked by either selecting the appropriate menu item, or with the keyboard shortcut.

Lock keyboard and mouse

Lock keyboard and mouse means MollyGuard will lock both the keyboard and the mouse and mouse clicks will not be registered (the mouse pointer will continue to be visible and moveable, however). With this setting enabled, the only way to unlock MollyGuard after it has been locked is with the ctrl+opt+cmd+L keyboard shortcut.

Do not lock media keys

When this option is enabled, MollyGuard will allow the media keys to continue to function normally even when the keyboard is locked. This can be convenient if you want to continue to be able to control a video or any music that might be playing, but would like to keep any busy hands from otherwise interrupting the activity. Note that if your keyboard settings are such that all F1, F2, etc. keys act as standard function keys, then you will need to press the Fn key to use the media keys.

Media keys: play/pause, previous/next track, volume up/down, mute The media keys


Icon sets

You can select between three icon sets for display in the menu bar. Your choices are the default icon (default icons), a padlock (padlock icons) or a key (key icons).

Display onscreen alert

When this option is enabled, an onscreen alert will display briefly whenever you lock or unlock MollyGuard.

The onscreen alert when MollyGuard is locked The onscreen alert shown when MollyGuard is locked

Reporting Bugs

You can send a bug report directly from within the application. To do so, select the About menu item and click the Report Bug... button. Please include, if you can, the steps to reproduce the bug, as well as with any other details you feel are relevant.

MollyGuard About panel Click it! The future of MollyGuard depends on it.
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