Wireless card reader and method for storing data

A wireless card reader comprising:

• a wireless power receiver configured to receive wireless power supply from a first wireless user equipment in a first time period to obtain first power;
• a wireless communications module electrically connected to the wireless power receiver and configured to use the first power in the first time period and use ultra-wideband impulse radio to perform wireless communication with the first wireless user equipment, so as to transmit a first read or write instruction from the first wireless user equipment and first data that needs to be read or written according to the first read or write instruction;
• a contact-type power supply electrically connected to the wireless power receiver and configured to use the first power in the first time period to supply power to an inserted memory card;
• and
• a first contact-type communications module electrically connected to the wireless power receiver, in communication connection with the wireless communications module, and configured to use the first power in the first time period to perform contact-type communication with the memory card, so as to transmit the first read or write instruction and the first data, such that the first wireless user equipment reads the first data from or writes the first data in the memory card.