The modern lock has a fascinating history in Cyrodiil. The need to restrict access to one's home has been a problem since homes were first built. The very first security system was a simple bar across the door. This has the obvious shortcoming of only being functional when the owner is at home. A novice thief breaks many picks while learning his trade. Only with time and practice will he get better at guessing the tension and timing necessary to set a pin. As a result, novice thieves tend to carry a great many lockpicks, while the masters only need to carry a few.