Proximity (keycard) door locks are currently the most secure in electronic lock solutions. Great for businesses, control what area different employees can access. Doors may be unlocked during business hours and locked at a pre-programmed time. This eliminates the need to lock doors manually. If an employee leaves your employ you can simply erase their user permanently. Because entry privileges can be removed electronically, many facilities where membership or rental status is required for access to the location, may control entry through an access control system.