Security system for remote cash dispensers

An automated security system for a remote access terminal in electrical communication with a central computer including a main memory and a plurality of remote access terminals in electrical communication with said central computer, said remote access terminal having an access control means and a data entry means operable by a user desiring to gain access, which comprises:

• (a) first generator means responsive to an electrical signal received from said data entry means for providing an identification signal representative of a user personal identification number;
• (b) second generator means responsive to a random number request signal received from said central computer for supplying a pseudo random number signal to said central computer;
• and
• (c) comparator means in electrical communication with said first generator means and said second generator means by way of signal paths wholly contained within said remote access terminal, and in electrical communication with said central computer for issuing an authorization signal to said access control means when a composite signal received from said central computer bears a predetermined relationship with said identification signal received from said first generator means and said random number signal received from said second generator means, said composite signal being formed by said central computer from a customer record signal stored in said main memory, from an offset signal supplied by said data entry means and bearing a predetermined relationship between said identification signal and said customer record signal, and from said random number signal.

A security system for controlling the access of a user at a remote station, which comprises:

• (a) a central computer system including a central computer and a main memory located at a central station;
• (b) a user operated data entry means located at said remote station;
• (c) first generator means located at said remote station and responsive to an electrical signal received from said data entry means for providing an identification signal representative of a user personal identification number;
• (d) second generator means located at said remote station and responsive to a random number request signal received from said central computer for supplying a pseudo random number signal to said central computer;
• (e) control means located at said remote station for preventing said user from gaining unauthorized access;
• and
• (f) comparator means in electrical communication with said first generator means and said second generator means by way of signal paths wholly contained within said remote station, and in electrical communication with said central computer for issuing an authorization signal to said control means when a composite signal received from said central computer bears a predetermined relationship with said identification signal received from said first generator means and said random number signal received from said second generator means, said composite signal being formed by said central computer from a user record signal stored in said main memory, from an offset signal supplied by said data entry means and bearing a predetermined relationship between said identification signal and said user record signal, and from said random number signal.

A security system for controlling the access of a user at a remote station, which comprises:

• (a) a central computer system including a central computer and a main memory located at a central station;
• (b) a user operated data entry means located at said remote station;
• (c) first generator means located at said remote station and responsive to an electrical signal received from said data entry means for providing an identification signal representative of a user personal identification number;
• (d) second generator means located at said remote station and responsive to a random number request signal received from said central computer for supplying a pseudo random number signal to said central computer;
• (e) control means located at said remote station for preventing said user from gaining unauthorized access;
• and
• (f) comparator means in electrical communication with said data entry means, said first generator means and said second generator means by way of signal paths wholly contained within said remote station, and in electrical communication with said central computer for issuing an authorization signal to said control means when a composite signal received from said central computer bears a predetermined relationship with said identification signal received from said first generator means, with said random number signal received from said second generator means, and with an offset signal supplied by said data entry means and exhibiting a predetermined relationship between said identification signal and a user record signal stored in said main memory, said composite signal being formed by said central computer from said user record signal and said random number signal.

A security system for a remote transaction terminal of an automated banking system including a central computer with a main memory and a plurality of remote transaction terminals in electrical communication with said central computer, said remote transaction terminal having customer operated data entry means and a cash dispenser, which comprises:

• (a) first generator means responsive to an electrical signal received from said data entry means for providing an identification signal representative of a customer personal identification number;
• (b) second generator means responsive to a random number request signal from said central computer for supplying a pseudo random number signal to said central computer;
• and
• (c) comparator means in electrical communication with said first generator means, said data entry means and said second generator means by way of signal paths wholly contained within said remote transaction terminal, and in electrical communication with said central computer for issuing a cash dispense signal to said cash dispenser when a composite signal received from said central computer bears a predetermined relationship with said identification signal received from said first generator means, said random number signal received from said second generator means, and an offset signal received from said data entry means and exhibiting a predetermined relationship between said identification signal and a customer record signal stored in said main memory, said composite signal being formed by said central computer from said customer record signal and said random number signal.

An automated security system for a remote access terminal in electrical communication with a central computer including a main memory and a plurality of remote access terminals in electrical communication with said central computer, said remote access terminal having an access control means and a data entry means operable by a user desiring a gain access, which comprises:

• (a) first generator means responsive to an electrical signal received from said data entry means for providing an identification signal representative of a user personal identification number;
• (b) second generator means responsive to a random number request signal received from said central computer for supplying a pseudo random number signal to said central computer;
• and
• (c) comparator means in electrical communication with said first generator means, said data entry means and said second generator means by way of signal paths wholly contained within said remote access terminal, and in electrical communication with said central computer for issuing an authorization signal to said access control means when a composite signal received from said control computer bears a predetermined relationship with said identification signal received from said first generator means, said random number signal received from said signal generator means, and an offset signal received from said data entry means and exhibiting a predetermined relationship between said identification signal and a customer record signal stored in said main memory, said composite signal being formed by said central computer from said customer record signal and said random number signal.