A method and system to enable data packets to engage in two-way transactions with various facilities, electronic equipment, and data sources, performing various services. Solving Means A chemical sensor according to the present technology is provided with a substrate and a plasmon absorption layer. A flexible web of plastic wrapping material is then applied over the base and the goods and air or gas evacuated therefrom and replaced with a suitable gas. The larger dataset can incorporate all, or a part of the original dataset and can also be disparate from the original dataset.