Abstract: The present invention discloses methods, devices, and systems for unobtrusively recognizing a user of a mobile device. Methods including the steps of: unobtrusively collecting motion data from the mobile device during normal device usage by monitoring standard authorized-user interaction with the device, without any form of challenge or device-specified action; demarcating the motion data into user motion-sequences based on changes in a motion-state or an elapsed time-period without an occurrence of the changes, wherein the motion-state refers to a placement and speed of the mobile device at a point in time; calculating user motion-characteristics from the user motion-sequences; and generating a motion-repertoire from the user motion-characteristics, whereby the motion-repertoire enables unobtrusive recognition of the user.

Abstract: A method for manufacturing a main body (10) of a faucet equipped with a valve (V) for blocking a water flow at an upper portion and a lever (L) for adjusting the valve. The method includes the steps of: separately molding each component of the main body (10) made of a brass material, the components including a base body (11) equipped with the valve, a first assembly (12) with a hot water inlet (12a), a second assembly (14) with a cold water inlet (14a) and a third assembly (16) with a water discharge port (16a); double injection molding a polyamide resin composition into the base body (11) and the first through third assemblies (12, 14, 16) to form internal molding assemblies (22, 24, 26, 28); combining the base body (11) and the first through third assemblies (12, 14, 16); and plating nickel-chromium onto the exterior of the welded structure.