Disclosed are a marketing message providing system and method. In one embodiment, these devices contain microfluidic channels that are formed in various layers of a three-dimensional structure. Alternatively, or additionally, an organoaluminum monolayer may be formed across a semiconductor substrate, and then exposed to silanol within a deposition chamber, with the silanol being provided in two doses. The location code is stored in the central repository toward associating the location code with the physical port.