A method is provided for synchronizing data sources. The apparatus includes a substrate holder configured to hold a substrate, a rotating device configured to rotate the substrate holder, a cylindrical cup surrounding a peripheral portion of the substrate, and a gas ejector disposed below the substrate. Furthermore, it is possible to guarantee that the communications session will not be disrupted during such roaming by configuring the wireless communications device to scan the wireless medium for only a minimum period of time necessary to detect a regularly occurring signal. These methods enable implementation of an enhanced system that overcomes problems of the legacy system while minimizing influence exerted upon legacy MSs in the case where the base station generates a new control channel for a new MS or where an MS decodes a new control channel. In an alternative preferred embodiment, a light pipe is constructed to illuminate light laterally along a portion of its length to illuminate a plurality of key members. The virtualization client is configured to execute the virtualized application adapted to the persona package.