Patent ID: 8408454

Claim:
A portable device for a consumer to conduct a transaction in a payment processing system, the portable device comprising a substrate having therein: an antenna in communication with related circuitry to transmit and receive at plurality of frequencies each carrying data; a chip including: a microprocessor; memory containing instructions for a plurality of applications; and a memory management unit (MMU) controlling rights by the microprocessor to execute the instructions for each said application; a passive circuit powering the chip upon being energized by an external circuit emitting: an access said frequency carrying access data received by the antenna such that the MMU allows the instructions in the memory for an access said application to be executed by the microprocessor to process the access data for the negotiation of access to a secure facility; and a payment said frequency carrying payment data received by the antenna such that the MMU allows access to the instructions in the memory for a payment said application to be executed by the microprocessor to process the payment data for the negotiation of one said transaction in the payment processing system; a user interface in electrical communication with the chip, the user interface having a plurality of buttons, at least one button of which, when engaged, limits the applications to be executed by the microprocessor to an application associated with a specific frequency; wherein the plurality of buttons include a plurality of subsets thereof, and each particular said subset corresponds to: a particular said frequency; and a particular said application; whereby when the particular said frequency is received by the antenna: the particular said frequency received by the antenna is permitted to energize the passive circuit to power the chip only when the corresponding particular said subset is engaged, such that the MMU allows the instructions in the memory for the corresponding particular said application to be executed by the microprocessor to process the data being carried by the particular said frequency; and the particular said frequency received by the antenna is not permitted to energize the passive circuit to power the chip when the particular said subset is not engaged.