Older mortise locks may have used warded lock mechanisms. The mortise locks used at Monticello were warded locks. Warded locks had special notches and grooves that made picking them more difficult. Haplo arrives near a Sartan city that is warded by a powerful shield spell. Attacks from any direction could be warded off by revolving guns on their ramparts. Ancient Romans used a more sophisticated locking system, called warded locks. It was also held auspicious and, according to Hindu tradition, warded off evil spirits. The warded pick, also known as a skeleton key, is used for opening warded locks. Lavanaprasada and Viradhavala warded off the Yadava invasions, and also subdued the rebellions. Lee's men successfully warded off the Union assault, and Lee continued with his plans. The Prussian forces were warded off, despite their superior numbers. She is warded away at the last instant. Furthermore, Luther's property is warded against Barthamus. Kushtaka can be warded off through copper, urine, dogs, and in some stories, fire.