Anti-fraudulent credit card use, anti-fraudulent credit card systems, and methods for preventing credit card fraud.

Abstract

An anti-fraud credit card includes a radio frequency antenna, a processing unit, a storage unit, and a power management unit. The radio frequency antenna is adapted to communicate with a card reader via radio frequency signals. The processing unit is electrically connected to the radio frequency antenna and can switchably operate in a basic mode and a temporary mode. The storage unit is electrically connected to the processing unit and pre-stores a basic card number corresponding to a basic credit limit. The power management unit is electrically connected to the radio frequency antenna and supplies power to the processing unit and the storage unit. When the card reader sends a card number read request to the anti-fraud credit card, if the processing unit is operating in the basic mode, it transmits the basic card number to the card reader; if it is operating in the temporary mode, it transmits a specific card number corresponding to a specific credit limit to the card reader.

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