Abstract: The application discloses a data processing method, apparatus, device and medium. The data processing method includes: receiving target activation data and a target activation instruction sent by a target server, wherein the target activation data includes a payment token to be activated corresponding to a payment card account number which needs to be activated; updating, in response to the target activation instruction, a target payment token in target personalized data to be the payment token to be activated, wherein a transaction card type indicated by the target personalized data is same as a transaction card type indicated by the target activation instruction; and setting the updated target payment token to be in an activated state.

Abstract: The invention relates to a data processing method based on NFC tag. The method comprises: reading the NFC tag, the NFC tag comprising tag content and tag ID; generating an NFC tag payment request based on the tag content and tag ID; parsing the NFC tag payment request and obtaining an parsing reply to the NFC tag payment request; generating an order generation request based on the parsing reply, wherein the order generation request is for causing an order to be generated based on first account information, current transaction information and second account information; generating the order based on the order generation request; and payment step for performing payment based on the order. According to embodiments of the invention, the payment process can be simplified, also, there is no need to set the NFC-specific reading device in the embodiments of the invention, and the cost of merchants can be reduced.

Abstract: The invention relates to a data processing method and a system based on NFC tag. The method comprises: acquiring amount data; generating custom order number for identifying a transaction; issuing tag data application request based on original NFC tag data, acquired amount data and custom order number; generating updated NFC tag data based on tag data application request and saving custom order number, and setting payment state for custom order number to be the unpaid state; updating the NFC tag based on the updated NFC tag data to obtain an updated NFC tag, wherein the updated NFC tag includes amount data; and reading the updated NFC tag and completing payment processing based on updated NFC tag. According to embodiments of the invention, it does not require transaction amount to be input by the user's mobile phone terminal, but instead, transaction amount is obtained by tag receiving terminal through input device.