Systems and methods for selective authorization of dependent code modules are provided. A bracket assembly having a bulkhead retaining element, a protective device element, and a retaining element operable to couple the protective device to the bracket allows for mounting of protective device to the bracket instead of the bulkhead, thereby saving space. The metal layer deposited is highly adhesive to the textile and is suitable for producing clothing, swim wear, diving suit, tent, cushion, wall paper, curtain, carpet, protective cover, screen window, equipment casing, and various other items. The wave is detected at one or more receiving acoustic transducers.