Patent ID: 8690060

Claim:
A card reader payment terminal comprising: an electronic circuit including at least one printed circuit board, to which are connected electronic components, comprising: a microcontroller designed to control different peripherals, wherein the microcontroller is connected to an associated first microprocessor, wherein the card reader payment terminal is configured to receive a first smart card comprising the associated first microprocessor, wherein the associated first microprocessor comprises a connector compatible with the standardized connector of smart cards for connection with the microcontroller, wherein the microcontroller is configured to use the associated first microprocessor as a first coprocessor to execute programs, wherein the microcontroller and the associated first microprocessor operate in parallel for executing a task, wherein the associated first microprocessor is adapted to calculate a security operation, wherein the card reader payment terminal is configured to receive a change of the first smart card with a second smart card comprising an associated second microprocessor, and wherein the microcontroller is configured to use the associated second processor as a second coprocessor to execute programs, wherein the second coprocessor is an upgrade to performance of the card reader payment terminal from the first coprocessor.