VoiceOver announces "Tab bar" or "Toolbar", the first time you select an element in one of these components. If you are implementing your custom versions of these, you can mirror this behaviour, as seen in previous tweets.
https://x.com/dadederk/status/1558045414082871298?s=20&t=LA95j22apvWsUqShqWGBzA

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It is useful to know these VoiceOver gestures to activate/deactivate Screen Curtain, pause/resume VoiceOver, easily simulate a long press for opening context menus, or quickly move the cursor to the screen's first or last elements.

@BeMyEyes, founded by @hjwiberg, enables people who are blind and low vision to identify objects by pairing them with volunteers from around the world using their camera. Winner of an Apple Design Award 2021 for Social Impact.

Touch target sizes are recommended to be at least 44 x 44 points. Buttons in the navigation bar ( especially when not using nav bar button items), dismiss buttons, and custom toolbars, are use cases that tend to have smaller sizes.