Abstract: A method for controlling a sound box, includes: in response to the sound box being in a standby state, emitting an ultrasonic signal, and receiving a reflected ultrasonic signal reflected by an external object; acquiring a moving trajectory of the external object according to the reflected ultrasonic signal; and determining a target operation instruction to be executed according to the moving trajectory of the external object.

Abstract: A method for controlling a sound box, includes: in response to the sound box being in a standby state, emitting an ultrasonic signal, and receiving a reflected ultrasonic signal reflected by an external object; acquiring a moving trajectory of the external object according to the reflected ultrasonic signal; and determining a target operation instruction to be executed according to the moving trajectory of the external object.

Abstract: A device management method for use in a primary router, includes: establishing a management connection with a relay router; acquiring a management interface identifier from the relay router via the management connection, the management interface identifier being an identifier of an Application Programming Interface (API) in the relay router for providing a management function; and transmitting a management instruction to the relay router via the management connection, the management instruction carrying the management interface identifier and being configured to manage an electronic device connected to the relay router.

Abstract: A network control system for controlling a visitor network and a network access security protocol for allowing client devices from accessing the visitor network is provided. The network control system relies on a combination of information retrieved from the client device requesting access to the visitor network and information retrieved from network components that make up the network control system to implement the network access security protocol in an efficient manner that minimizes the need for a user to input a password to access the visitor network.

Abstract: A device management method for use in a primary router, includes: establishing a management connection with a relay router; acquiring a management interface identifier from the relay router via the management connection, the management interface identifier being an identifier of an Application Programming Interface (API) in the relay router for providing a management function; and transmitting a management instruction to the relay router via the management connection, the management instruction carrying the management interface identifier and being configured to manage an electronic device connected to the relay router.