A multi-purpose chimney cap device for a flue opening. Methods are disclosed for managing payment for such transactions at a POS, including transactions involving payment for both in-store purchases and online orders. The wall element may be curved or linear in various embodiments. The HTTP server and the HTTP client application may format requests to be communicated therebetween via the Internet in an HTTP format, and each may provide additional state information with the HTTP formatted requests recognizable by the other for authenticating the application server and the HTTP client application to one another. The configuration LAN is utilized to provide communication between the AP and the client devices that is related to network setup, configuration, modification, etc. One end of the pivot bearing shaft is mounted to the base of the disc drive, and the other end is secured to the cover of the disc drive in such a manner that the resonance characteristics of the pivot bearing assembly is improved in both the axial and radial direction of the pivot bearing shaft.