These tools were very popular among knights, those going into campaigns and too conscious of the loyalty of their spouses. The earliest instance of the female chastity belt was discovered in Austria by the famous archaeologist Anthony Pechindzerom and belongs to the XVI century. So there now exist anti-masturbatory rings and chastity belts.
The desire to curb human passions and the approval for power over the most deep-seated motivations, lead to the creation of some of the most sophisticated and intricate devices of torture known to man.