FilterKeys

FilterKeys is an accessibility feature of Microsoft Windows. It tells the keyboard to ignore brief or repeated keystrokes. This makes typing easier for users with hand tremors.
History.
Microsoft first introduced FilterKeys with Windows 95. The feature is also used on later versions of Windows.
Enabling.
Hold the right key for 8 seconds. This feature can also be turned on and off via the Accessibility settings in the Windows Control Panel or via Windows Settings.