Patent ID: 8315948

Claim:
A device for providing a single-use credit card number, the device comprising: a central processor; an input device in communication with the central processor; a display in communication with the central processor; and a storage device in communication with the central processor, the storage device including: a first data element that is specific to a credit card account, and instructions adapted to be executed by the central processor to: receive a request by a user to generate a single-use credit card number; access the first data element; receive, via the input device, transaction-specific data comprising at least one of the following: an amount of a purchase, or an identifier that identifies a merchant, combine the first data element and the transaction-specific data to produce a single-use credit card number that identifies the credit card account, in which the single-use credit card number is recognizable by a credit card authorization system as a credit card number, and display the single-use credit card number via the display.