Abstract: A framework for tracking an electronic device includes at least one electronic device, a server in wireless communication with the at least one electronic device, and a tracking system implemented in the server and the at least one electronic device. The server stores personal identification information of the at least one electronic device, and a database. The tracking system is used to track the at least one electronic device after the at least one electronic device is lost or stolen. The server controls the at least one electronic device to obtain tracking information for tracking the at least one electronic device, and the at least one electronic device sends the tracking information to the server. The server tracks the at least one electronic device by searching for information in the database most closely matching the tracking information.

Abstract: A watch fastener for fastening a watch strap or band includes a base portion, a first column, and a head portion. The base portion and the head portion lie at opposite ends of the first column and the intersection of a central axis of the first column with a central axis of the base portion is oblique. The first column perpendicularly intersects the head portion.