Input Lock

  • Author: Jose Manuel Delicado
  • NVDA compatibility: 2017.3 to 2021.1
  • Download stable version


Do you have kids or pets at home? Do you have a cat and It likes very much climbing your table and walking over your keyboard? Do you accidentally move the mouse to random parts in the screen while using your laptop? Then Input Lock is for you! You will be able to leave your computer alone and turned on without risk.

Once installed, you will be able to lock your keyboard, touch screen, if your laptop has one, mouse and Braille display.


This addon adds two extra gestures to NVDA. By default they are unassigned, so you will have to configure them from Input gestures dialog. Read the NVDA User Guide for more information.

When you press the toggle input lock gesture, NVDA will say "Input locked". Your input devices will be blocked until you press the same gesture again. In that moment, NVDA will say "Input unlocked" and everything will work as usual.

If you press the toggle mouse block gesture, your mouse will be locked. Press this command again to unlock it. While mouse is locked, you can use NVDA gestures to move it, and click with left and right buttons, but You can't move the mouse itself. Mouse clicks can also be disabled from Input lock category in NVDA settings dialog (NVDA 2018.2 and later) or from add-on settings dialog for older versions, available under preferences menu. In addition, from these settings you can control wether mouse locks when NVDA is started or not.

Note: when mouse clicks are blocked, you can't use any NVDA gestures to work with the mouse.

Limitations and known problems

Input Lock has the following known problems:

  • The shortcuts control+alt+del and windows+l can be used even when the keyboard is locked.
  • NVDA unlocks the keyboard and other input methods when the computer wakes up from standby mode or the session is restored from the Windows lock screen.
  • On some laptops, the touchpad still accepts user input after mouse is blocked.


Version 1.9

  • Updated compatibility flags for recent NVDA versions.
  • Updated translations.
  • Updated documentation.

Version 1.8

  • Updated compatibility flags for recent NVDA versions.
  • Updated translations.

Version 1.7

  • Updated compatibility flags for recent NVDA versions.
  • Updated translations.

Version 1.6

  • Now, settings are removed only when the add-on is uninstalled. Configuration is nolonger reset when upgrading.
  • New and updated translations.

Version 1.5

  • Added compatibility with recent NVDA releases.
  • New translations.

Version 1.4

  • The addon gestures are unassigned by default.

Version 1.3

  • Added a configuration panel in settings dialog. For old NVDA versions, a menu item and a dialog have been added too.
  • Added a setting to lock the mouse when NVDA is started.
  • Added a setting to block also mouse clicks while mouse is locked.
  • Small bugs fixed, some code optimizations and less duplicated strings for translators

Version 1.2

  • Now the mouse can also be locked
  • New command to lock and unlock only the mouse

Version 1.1

  • If another addon has previously added a capture function to inputManager, it is restored when the input is unlocked.

Version 1.0

  • Initial release