How I Built a GNOME Utility to Disable My Laptop Keyboard (and What I Learned About Linux Input Devices)

If you've ever used an external keyboard with your laptop, you know the problem: you rest a wrist on the trackpad, or the laptop shifts slightly, and suddenly you're typing garbage into the built-in keyboard while your hands are on a completely different one. Multiply that by a few hours a day and it's not just annoying — it's a real productivity...