Methods and systems provide users with access to subscription-based programs on mobile devices. The provided cover lens is constructed by a tempered substrate, a pattern layer and a touch-sensing layer, where the pattern layer is formed on a first surface of the tempered substrate so as to provide the cover lens with an appearance of periphery-like pattern. The control valve piston has an inlet side and an outlet side. Detectors can also be attached directly to the head of the boring apparatus and data transmitted to the surface electronically or by other means. Since the material is flexible, the funnel can be manipulated to be wider or narrower as desired.