any of the ports 16 or via a remote computer with a modem described in more detail in connection with fig6 a specifically the controller 14 provides access security which allows only authorized access for modification of the database 12 as such a system administrator at a remote port 16 can download information to the database or modify existing information within the database as needed and without physically operating the keyboard 42 the communications link 18 of the invention can take many forms it is generally impractical to u201c hard wire u201d each remote access port 16 to the database 12 so the form of the communications link 18 generally includes existing communication networks such as one or more of the following telephone lines fiber optic cabling satellite communications cellular communications radio and microwave frequency communicators infra red communicators the facsimile mechanism airphones modems the internet co axial cabling television including interactive tv communications and the like these communication networks and subsystems are readily known to those skilled in the art without further reference hereto nevertheless fig6 a 6b illustrate representative communication links according to the invention which comprise one or more of these communication networks the displays 22 and 40.