How to disable the built-in MacBook keyboard? Is it possible to completely disable the built-in keyboard on a MacBook? No input should be possible from that keyboard when I connect an external keyboard. This is sort of possible with the trackpad and the mouse, is there an option (or indeed a hack!) to do the same with the built-in hardware?
Install Karabiner

Choose your external keyboards on Devices &gt; Advanced.


Check the corresponding box


Source