AssistiveTouch

AssistiveTouch is an accessibility feature of iOS and iPadOS in which a virtual button can be placed on the screen of the device. AssistiveTouch features can be activated in watchOS through arm movements and gestures.

Usage
AssistiveTouch can be activated in iOS and iPadOS from  . Dragging the button will reposition it. Tapping it can activate a variety of functions:
 * Control Center
 * Notification Center
 * Spotlight
 * Home button
 * App Switcher
 * Speak Screen

Some users have used AssistiveTouch as a temporary workaround on a device with a broken Home button.

History
AssistiveTouch first appeared in iOS 5 in 2011. It was added to watchOS 8 in 2021. Apple announced on May 17, 2022 that watchOS 9 will add new Quick Actions to expand AssistiveTouch gestures.