| 摘要 |
Provided are a data transmission method, a terminal, and an electronic signature device and system. The data transmission method comprises: a terminal establishes an NFC connection with an electronic signature device; the electronic signature device sends the Bluetooth address of the electronic signature device to the terminal via the NFC connection; the terminal sends the Bluetooth address of the terminal and first information to the electronic signature device via the NFC connection; the electronic signature device processes the first information to obtain second information and broadcasts the Bluetooth address of the electronic signature device; the terminal conducts Bluetooth address scanning and finds the Bluetooth address acquired via the NFC connection; the terminal establishes a Bluetooth connection with the electronic signature device corresponding to the Bluetooth address acquired via the NFC connection; and the electronic signature device sends the second information to the terminal via the Bluetooth connection. |
