“Touch Bar Zoom” is an important feature packed inside Accessibility suit on new MacBook Pro. Once enabled, it displays a larger Touch Bar on the screen.
People with low vision would find Touch Bar Zoom very handy as it helps in using Touch Bar more conveniently. Even if you don't have any vision problem, you would like using it. As for instance, you can easily change the magnification level, increase or decrease zoom level, select an item and more. (You may want to read—how to customize Touch Bar on MacBook Pro)
How to Enable and Use Touch Bar Zoom on MacBook Pro
How to Enable/Disable Touch Bar Zoom on MacBook Pro
Step #1. First off, click the System Preferences icon in the Dock on your Mac.
Step #2. Next, click on Accessibility icon.
Alternately, triple-press the Touch ID button or simply press the Option (⌥)-Command (⌘)-F5 on the keyboard to bring up the Accessibility settings window on the screen.
Step #3. Next, you need to click on Zoom which is under Vision section. Then, tick the checkbox next to “Enable Touch Bar zoom.”
Later, if you want to disable Touch Bar zoom, you need to deselect the checkbox.
Note: Just in case Touch Bar zoom is not available, you need to turn off VoiceOver on your Mac. Go to System Preferences → Accessibility → VoiceOver and disable it.
How to Use Touch Bar Zoom on MacBook Pro
Once you have enabled Touch Bar zoom on your Mac, you should see a virtual Touch Bar at the bottom of the screen when you touch anything on the physical Touch Bar. Find out what you can do with it…
See Zoomed View of the Touch Bar
In order to see the zoom view of the Touch Bar, touch and drag with one finger on the Touch Bar.
Increase or Decrease the Zoom
In order to increase or decrease the zoom, press and hold the Command (⌘) key on the keyboard while pinching two fingers open or closed on the physical Touch Bar.
Change the Magnification Level
To change the magnification level, you need to hold down the Command key and use a two-finger pinch gesture.
Split-tap or Select an Item
Touch and hold an item on the physical Touch Bar and tap anywhere on the Touch Bar with another finger in order to activate the item.
Synthesize A Tap
While panning with one finger, simply tap with a second finger in order to synthesize a tap. Then, you need to hold the second finger down and move both fingers together to synthesize a tap down and drag where your first finger is.
Activate Direct Touch-Mode
Simply hold your finger still in one location to trigger direct-touch mode. It enables you to interact directly with the control under your finger.
Choose and Activate an Item
Just slide your finger on the physical Touch Bar until the circle on an item you wish to choose. Then, continue to hold your finger there until the circle changes color to select the item.
You may also like to read these posts How to Use Touch Bar with Reminders on New MacBook Pro, Use Touch Bar with Notes App, tips to fix the unresponsive Touch Bar etc.