Abstract: The invention involves the creation of a security lock system that allows a room's occupant to quickly secure the room against entry from the outside without the need to exit the room and without the need to use a key for activating the lock mechanism; the lock is a retrofit device that fits onto a typical inner lever arm door handle, and provides a frictional means for maintaining the inner door handle in an open position; in an emergency, the handle can be manually rotated into the closed, position, rendering the door non operable from outside without the use of the appropriate key.