The invention discloses a
mobile payment device and a method thereof based on an NFC technology, and the NFC technology and hardware
encryption are combined. According to the
mobile payment device and the method thereof, the NFC technology and the hardware
encryption are combined and applied to the field of mobile terminal
payment for the first time, and compared with traditional
software encryption like dynamic passwords, the hardware encryption is higher in safety and reliability. The
mobile payment device is designed in a folding type, a display screen can be folded and put into an outer shell of the mobile
payment device when not used, therefore, the occupied space is small, the display screen is protected effectively, and damage to the display screen in the process of mobile carrying can be prevented. The
payment device is small in size, easy to carry, and capable of being integrated into a card with a
liquid crystal display. According to the mobile payment device and the method thereof, a hardware encryption mode is adopted, a secret key is stored in hardware, safety of the secret key can be guaranteed on the hardware, the secret key in the payment device can not be obtained by the outside through a mobile terminal, possibilities of
exposure of the secret key are reduced, and therefore payment can be
safer.