An image display device includes a display panel and a liquid crystal lens. A gateway node layer controls access to applications and other functions such as billing. The particles wetted by the sprayer are blocked by the internal rotary filter and discharged with the carrier liquid towards an external container. The at least one email server may compare a given PIN and device ID, based upon a communication from a given mobile wireless device, with a corresponding PIN and device ID for the corresponding subscriber account in the database, and update a corresponding device capability set for the corresponding subscriber account based upon a discrepancy. The management computer determines whether or not a failure is occurring, based on reception state of the response. The flexibility of the system allows data processing systems to reduce scanning time by utilizing multitasking to perform virus scans in parallel, subject to the amount of available memory and the number of simultaneous tasks that are available to be used by the parallel processes.