Abstract: The portable automated teller machine disclosed by the present invention is a low-cost, pocket-size data terminal which can securely exchange information with a host bank computer. It is battery powered, operates without the need for direct connection to a telephone line and couples to the host bank computer via the telephone handset of any public or private telephone station. It allows its user to securely access bank and bank accounts and to securely effect either inter-account transfers or bill payments. Security is assured by assigning a PIN to each individual user and prestoring it therein, by assigning a machine identity number to each machine and storing it therein, and by providing encrypted data communication. It has prestored therein the individuals account numbers and the phone numbers and other parametrs needed for communication to the corresponding host computer bank.

Abstract: The portable automated teller machine disclosed by the present invention is a low-cost, pocket-size data terminal which can securely exchange information with a host bank computer. It is battery powered, operates without the need for direct connection to a telephone line and couples to the host bank computer via the telephone handset of any public or private telephone station. It allows its user to securely access bank and bank accounts and to securely effect either inter-account transfers or bill payments. Security is assured by assigning a PIN to each individual user and prestoring it therein, by assigning a machine identity number to each machine and storing it therein, and by providing encrypted data communication. It has prestored therein the individuals account numbers and the phone numbers and other parameters needed for communication to the corresponding host computer bank.