Read on to learn how to use and configure the Touch Bar and Touch ID.
Mac - Set what to display on the Touch Bar How to set (on/off) Touch ID on a Mac with Touch Bar How to add or remove Touch ID fingerprints on a Mac with Touch Bar
Triple press the Touch ID button to launch accessibility options
Accessibility options
Mouse and Keyboard- Enable Composite Keys- Enable Slow Keys- Enable Mouse Keys
others
See here for how to use and set up the Touch Bar/Touch ID.
How to use and set up Touch Bar/Touch ID