Palm Resting on Trackpad Issue While Typing in MacBook 2016
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The 2016 MacBook Pro trackpad drove me insane. Apple made it absolutely massive, and while that's great for gestures, it means your palms constantly brush against it while typing. I'd be mid-sentence and suddenly my cursor would teleport to a random spot in the file, or I'd accidentally click something. Classic Apple — beautiful hardware, maddening behavior.
Here's the terminal fix I used to make it tolerable.
TL;DR: Simply run this command in your terminal to fix the palm rejection issue on MacBook 2016 trackpads.
The Fix
Open Terminal and run:
defaults write com.apple.AppleMultitouchTrackpad TrackpadThreeFingerDrag -bool false
defaults write NSGlobalDomain com.apple.trackpad.scaling -float 0.6875
Then log out and log back in for the changes to take effect.
Additional Tips
If the above doesn't fully resolve the issue, you can also try adjusting the tracking speed in System Preferences > Trackpad. Setting the tracking speed one notch lower than your current setting can help reduce accidental palm inputs.
Apple's palm rejection algorithm improves with macOS updates, so keeping your system up to date is also important. The issue was most pronounced on early macOS Sierra builds but improved significantly with subsequent updates.
For the most aggressive fix, you can disable "Tap to Click" entirely in Trackpad preferences and rely only on physical clicks. This eliminates almost all accidental palm touches, though some users find it less convenient for everyday use.