This is an AutoHotkey script you can use to temporarily block keyboard input. When your keyboard is locked by this script, keypresses will be caught by the script and blocked, until you unlock your keyboard again.

• Allowing a baby/toddler to tap away on your keyboard without messing up your system.
• Defending against your cat that walks across or sleeps on your keyboard.
• Locking your keyboard while wiping it clean.
• Messing with coworkers.
• Blocking coworkers from messing with you.

Note: This is not security software and is easily bypassed. Only use it for convenience, not security.

You can either use the latest executable release, or run the script itself. Both can be accessed here.

Download the latest release, place it where you want, and run keyboard-locker.exe. Don't forget to grab settings.ini from the release as well.

1. Install AutoHotkey version 1.x in order to run .ahk scripts. Not tested with AutoHotkey version 2.
2. Download the latest release and extract the files where you want.
3. Run keyboard-locker.ahk.
4. Lock the keyboard either by pressing the default shortcut Ctrl+Alt+k, or by right clicking on the tray icon and selecting Lock keyboard.
5. Unlock the keyboard either by typing the default password unlock, or by right clicking on the tray icon and selecting Unlock keyboard.

Various settings can be changed by editing settings.ini. You can change the following settings.

• change the keyboard shortcut or password
• disable the keyboard shortcut or password
• disable tray notifications
• automatically lock on open
• automatically exit on unlock
• lock the mouse as well

The settings file contains explanations for each setting.

• Some media keys or Windows shortcuts may not be blocked.
• Some keys (especially modifiers) may get "stuck" after unlocking, requiring you to press them again to get them "unstuck".
• There is sometimes a slight delay after typing the password before the keyboard is unlocked.

Feel free to submit a PR if you have improvements for these issues!

• Stealth mode: hide the tray icon and disable tooltips on lock, making it slightly more difficult to bypass the script.
• Temporary password: change the password at run time to avoid using the one that is readable in the script itself.
• Unlock timer: automatically unlock after a period of time.
• Inactivity lock: automatically lock after a period of inactivity.
• Scheduled lock: automatically lock and unlock on a schedule.

This script is inspired by the Keyboard Locker script from this HowToGeek article, which in turn was based on a script by an AutoHotkey forum user named Lexikos (the original forum thread appears to be lost due to forum move, but was originally found here).