The method of operating the nonvolatile memory device may include performing a read operation on a first address region, comparing a read time of the first address region with a reference time, and storing read data from the read from the first address region in a second address region based on the comparison result. A display is formed on a packaging case by irradiating a laser beam on a front face of a packaging case produced by a paper sheet having a colored layer constituted by a coloring agent and a resin film layer for protecting the front face on the front face, and evaporating the colored layer and the resin film layer by the laser beam, thereby forming the display on the packaging case. The repetition rate may be further modified by taking into account vehicle driving conditions which may indicate a risk of boredom in the driver. The methods and systems may be implemented in widely accepted Internet Protocol and Transmission Control Protocol networks.