I use GPG verification for most of my commits so that people know that it’s really me (don’t worry, I debate the difference between authentication and identification with friends and coworkers all the time).

If I’m on my Mac, I’m using Tower, a fantastic Git UI, and I set it up to sign my commits by following a post by Stefan Zweifel:

Check out Stefan’s post here: https://stefanzweifel.io/posts/sign-your-commits-with-tower-app.