A mouse with its thumb button highlighted, a padlock, and a Terminal window showing the Secure Input process ID and no matching process

My Mouse Buttons Quit. Secure Input Was Why.

I pressed the button and nothing happened. It’s the button on the thumb rest of my MX Master 3, the one I’ve set as my Wispr Flow button. Wispr Flow lets you pick a mouse button to trigger dictation, and that thumb button is the one I chose. If you haven’t used Wispr Flow, it’s voice dictation that actually keeps up with how I think, and once you get used to talking instead of typing, it becomes very hard to go back. So when that button stopped doing anything, it wasn’t a small annoyance. It was the thing I rely on most during the day, and it had quietly stopped working. ...

October 9, 2026 · 5 min · 958 words · John Shelton