Computer terminal security system

A communications system security apparatus, said apparatus comprising:

• a. a data processor from which information may be entered or removed;
• b. a terminal capable of sending or receiving information from said data processor in a given interval of time;
• c. an information transmission path adapted to carry information between said data processor and said terminal in a given interval of time;
• d. a first manually controllable means for normally conditioning the connection of said data processor to said transmission path and operated to provide a code receiving mode;
• e. a first code means located at said terminal having a first predetermined code combination;
• f. a second manually controllable means for normally connecting said terminal to said transmission line and operated to connect said first code means to said transmission path;
• g. a second code means, located at said terminal, having a second predetermined code combination stored therein and responsive to a selected code combination such that when both said second code combination and said selected code combination are identical said terminal is connected to said transmission path;
• and
• h. a third code means, located at said data processor, having a third predetermined code combination stored therein and connected to said transmission path in said code receiving mode when said first manually controllable means is operated such that said third code means is responsive to said first predetermined code combination when said second manually controllable means is operated to connect said data processor to said transmission path when both said first and second manually controllable means are returned to normal.