An elastic hinge element for a glasses frame includes a box that includes a guiding cavity, a slide that includes a body moving in the guiding cavity, and at least one elastic piece that works with the box to produce an elastic reaction that opposes the extraction of the slide from the guiding cavity, in which the slide body includes an inside cavity that accommodates the elastic piece. The proximity sensor device and method provide a user with the ability to indicate an orientation change in a display using the sensing region of a proximity sensor device as a user interface. The seam also includes a T-member connected to the first material and the second material to form a French seam appearance on the outer surface of the material.