Zac Hall, 9to5Mac:

If you’re selling (or generously handing down) your MacBook Pro with Touch Bar, Apple recommends an extra step when erasing your data before parting ways with your machine. This step requires an obscure Terminal command that you wouldn’t assume and isn’t required on Macs without the Touch Bar.

Here’s the Apple Support document titled What to do before you sell or give away your Mac.

Check out step 6, “If you have a MacBook Pro with Touch Bar, clear its data”.

Begs the question, what is specifically stored in the Touch Bar that requires cleaning? Good to know that this step is necessary, but a bit of a mystery. Anyone know the specifics? Please do ping me.

Nice find, Zac.

UPDATE: And the answer is, this script removes your Touch ID data from your Mac, as proved by Stephen Hackett, written up on this 512 Pixels post.