Sticky Keys is an accessibility feature to help Windows users with physical disabilities reduce the sort of movement associated with repetitive strain injury. This feature serializes the keystrokes instead of requiring users to press multiple keys at the same time. Sticky Keys also allows users to press and release a Modifier Key (Shift, Ctrl, Alt, Function, Windows Key) and have it remain active until any other key is pressed.
To activate Sticky Keys – Press the Shift Key 5 times in short succession. A tone sounds and the Sticky Keys dialog appears. By default, the cursor is on the Yes button. Press the space bar to turn on Sticky Keys.
To turn off Sticky Keys once enabled, press 3 or more of the modifier keys (Shift, Ctrl, Alt, Function, Windows Key) at the same time.