Change Keyboard Hardware preferences for accessibility on Mac
On your Mac, use the Hardware pane of Accessibility Keyboard preferences to enable and set options for Sticky Keys, Slow Keys, and Typing Feedback.
To change these preferences, choose Apple menu > System Preferences, click Accessibility, click Keyboard, then click Hardware.
Open the Hardware pane for me
Enable Sticky Keys
Press a set of modifier keys one at a time in sequence, instead of all at once. For example, you would enter the key combination Option-Command-F5 by pressing each key in sequence.
To customize Sticky Keys, click Options:
Press the Shift key five times to toggle Sticky Keys: Use your keyboard to turn Sticky Keys on or off.
Beep when a modifier key is set: Have your Mac make a sound when you press a modifier key.
Display pressed keys on screen: Show symbols in the selected area on the screen for the modifier keys you press.
Enable Slow Keys
Adjust the delay between when you press a key and when it’s activated.
To customize Slow Keys, click Options:
Use click key sounds: Have keys make a sound when pressed. You hear a sound when you press a key, and a different sound when the key is accepted.
Acceptance Delay: Set the delay between when you press a key and when it’s accepted.
Enable Typing Feedback
Have your Mac speak what you type, select, or press using the keyboard.
To customize Typing Feedback, click Options:
Echo characters: Your Mac speaks each character you type.
Echo words: Your Mac speaks each word you type.
Echo selection changes: Your Mac speaks each time you select something on the screen.
Echo modifier keys: Your Mac speaks each modifier key you press.
To quickly turn Sticky Keys and Slow Keys on or off using the Accessibility Options shortcut panel, press Option-Command-F5 (or if your Mac has Touch ID, quickly press Touch ID three times).
To specify which options are available in the shortcut panel, choose Apple menu > System Preferences, click Accessibility, then click Shortcut.
Open the Shortcut pane for me