Abstract: The present disclosure provides a purification device comprising: a main body, and a water-outlet module, wherein the module includes a fixed cover fixed to the main body so as to protrude forward of the main body, a vertically-movable cover moving vertically while bearing against the fixed cover, and a water-outlet nozzle mounted on a bottom of the vertically-movable cover, wherein the vertically-movable cover or the fixed cover includes a removable cover configured to be removable in a direction crossing a vertical movement direction of the vertically-movable cover.

Abstract: Methods, systems, and computer-readable media for batch registration and configuration of devices are disclosed. A plurality of devices are detected over one or more networks. Data indicative of the plurality of devices is provided through a user interface. Through the user interface, user input is received that indicates a selected plurality of the devices. The selected plurality of the devices are registered with a service provider environment. The selected plurality of the devices are authenticated using device-specific credentials and registered for device-specific accounts with the service provider environment. A configuration profile is deployed to the selected plurality of the devices.

Abstract: Described are techniques for establishing secure communication channels between user devices and service providing devices. Correspondence between a request received from a user device and security data may be used to determine that the user device has provided a valid access credential. The access credential may be replaced with a subsequent access credential after use. Correspondence between the request and service data may be used to determine that the request may be processed by the receiving service and that the user device has the permissions necessary for the request to be processed. Portions of the request that meet these criteria may be provided to the service. The secure communication channel may also be used to provide the response from the service to the user device.