The invention discloses a
radio frequency signal smart card with
key switch control and a control method thereof, and belongs to the field of smart cards, the device comprises a
smart card body, the
smart card body is internally provided with an outer ring
radio frequency antenna, a
radio frequency chip, a
key switch, an
LED lamp pole
chip and an inner ring radio frequency antenna, and the outer ring radio frequency antenna is arranged at the edge in the intelligent card body. The
key switch is pressed to enable the radio frequency
chip and the
LED lamp pole chip to form an access through the outer ring radio frequency antenna and the inner ring radio frequency antenna, and power is supplied to the radio frequency chip and the
LED lamp pole chip through cooperation of a radio frequency field, the outer ring radio frequency antenna and the inner ring radio frequency antenna near a
card reader. An
algorithm is pre-stored in the key switch to generate a one-time
password and transmit the one-time
password to the
card reader, unauthorized scanning is prevented,
relay attacks are resisted, an LED indicating lamp on the LED lamp pole chip indicates the transaction state, using is more visual, experience is better,
active safety control is achieved through a simple structure, and the
encryption scheme is simple, convenient and superior to a pure
software encryption scheme.