When Sticky Keys is turned on, you can press a modifier key (SHIFT, CTRL, or ALT) and then another key in sequence rather than at the same time, to enter shifted (modified) characters and other key combinations. This way, you can press a modifier key and have it remain active until another key is pressed.
By default pressing a modifier key once latches the key down until the user presses a non-modifier key or clicks a mouse button. Pressing a modifier key twice locks the key until the user presses the key a third time.
This tutorial will show you how to back up and restore the Sticky Keys settings of any user account on any Windows 7, Windows 8, and Windows 10 PC.