OS X Mountain Lion: Prevent accidental keystrokes using Slow Keys
You can use Slow Keys to control the delay between the time you press a key and when it’s accepted by the keyboard. If you frequently press keys accidentally, you can set a longer delay.
- Choose Apple menu > System Preferences, click Accessibility, and then click Keyboard.
- Select Enable Slow Keys.
- To set how long you want your Mac to wait after you press a key, click Options.
You can choose to hear audible feedback when you press keys, especially useful if you can’t easily see the screen. To turn on audible feedback, select the “Use click key sounds” checkbox. You hear one sound when you press a key, and a different sound when the key is accepted.
You can also turn on Slow Keys by pressing Command (⌘)-Option (⌥)-F5 and selecting Enable Slow Keys.