Fail-safe locking systems will unlock doors in the event of a power outage. Fail-secure access control systems will lock the latch in the strike during a power outage. Fail-secure locks are great at keeping areas with sensitive information secure in the event of a power outage but can cause safety concerns in other areas. Fail-secure locks can be a hindrance to egress in an emergency if used on emergency doors or in fire escape stairwells.