S

Electronically-operated locking devices that contain keys or access codes, which latch onto structures such as buildings or fences, and which cannot be removed without a security code; electronically-operated real estate lock boxes that contain keys or access codes, which latch onto structures such as buildings or fences, and which cannot be removed without a security code; electronic memory cards

Computerized database management services, namely, maintaining a database of authorized computer users having security access to remotely-located electronically-operated locking devices

Electronic storage of secure access data at a central computer

Monitoring of computer systems for security purposes, namely, monitoring and retrieving secure access data stored at a central computer, monitoring access to computer-operated systems by authorized users at remote sites, and compiling and disseminating a secure access data log related thereto