There are many advantages to Electronic Door Lock Systems over traditional mechanical door locks. Some of those advantages include programmable security clearances, automatic door lock/unlock scheduling, and centralized management.
Access controlled doors, used to secure areas, allow only authorized personnel to enter into secure areas. Individual personnel can each have their own security clearances managed through the Access Control System (ACS) during specific scheduled hours. This will negate the need to issue keys and to change the locks when the keys are lost or stolen. When ID badges replace keys, you can have clearances set up, through the ACS, eliminating the security risk of keys being lost or stolen and a copy made and used in an inappropriate manner.