BUSINESS PROCESSING METHOD AND DEVICE

Embodiments of this application provide a service processing method and a device, to improve security of a wireless and contactless service. A first device receives a first identifier sent by a second device, where the first identifier is sent by the second device after the second device receives a trigger request used to perform a first service, and the first identifier is in a first state or a second state, the first service is an unlocking service or a payment service; and if the first device determines, based on the received first identifier, to perform authentication, and the authentication succeeds, the first device sends a second identifier to the second device, where the second identifier indicates that it is determined to perform the first service; or if the first device determines, based on the received first identifier, not to perform authentication, the first device sends first location information and a third identifier to the second device, where the first location information is location information of the first device, and the third identifier indicates that a location of the first device and a location of the second device are normal. The embodiments of this application are used for service processing.