Device ID and uuid are flat concepts, describing the uniqueness of the device.
- uuid focuses on the uniqueness of the device hardware. In the production process of IoT devices, Tuya's factory test tool will issue a unique uuid and authkey in the world of Tuya for each tuya solution device for authentication and authorization;
- device_ID focuses on the instantiated object of the device in the cloud. After the device initiates an activation request to Tuya Cloud and the activation is successful, Tuya will issue a device_ID for the device.