Systems and methods for dynamic user profile presentation in a large-scale network are provided. The display apparatus comprises at least one fan running at at least one initial rotation speed. At least two of the conduit segments are constructed of a magnetically conductive material and at least one of the conduit segments is constructed of a non-magnetically conductive material and positioned in between the conduit segments constructed of the magnetically conductive material to establish a non-magnetically conductive region. The selection of a new arbitrary anonymous identifier is under the control of the user.