Actually you can do that if you go to System Preferences > Accessibility > Mouse & Trackpad. Click the checkbox next to "Ignore built-in trackpad when mouse or wireless trackpad is present."
But I don't use a mouse normally. I just want the trackpad to ignore input when I'm typing. If it had a 1-2 second delay after the last keystroke before "tap to click" would work, that would be great.
The option in your screenshot only refers to gestures (like a 3 finger swipe).Also BetterTouchTool seem to have this function but i cant get it to work.
On what macOS version? Sonoma?It would be perfect if it autostart with MacOS. 👍