A system and method for distributing a plurality of electronic articles is provided. The porous polymer films produced by this invention are useful for fabricating future integrated circuits. A semiconductor memory constructed by a large number of the nonvolatile memory cells can be obtained in a compact manner with simple and as few as possible steps. Thus, an image exposure device is provided that can suppress stray light of a light source that emits a large amount of stray light. The user device receives the return information and generates a request for private data based on at least a portion of the returned information.