Another new feature of the MacBook Pro with Touch Bar is the addition of Touch ID.

While this is the first Mac computer to feature a fingerprint reader, the tech has been around since at least 2004.

Welcome to the family.

The hardware helping drive this nifty feature contains a button coupled with capacitive sensors that can distinguish fingers. Yay for biometrics.

That button also doubles as the power button, so fixing a power button may be a more costly affair than it once was.

The Touch ID button is topped by sapphire crystal, which should protect the fingerprint scanner from scratches.