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With the swift increase of the number of mobile device users, more wireless information services and mobile commerce applications are needed. Since various barcodes have been used for decades as a very effective means in many traditional commerce systems, today people are looking for innovative solutions to use barcodes in the wireless world. Recently, the mobile industry began to pay more attention to barcode applications in m-commerce because 2D-barcodes not only provide a simple and inexpensive method to present diverse commerce data, but also improve mobile user experience by reducing their inputs. This paper first discusses 2D-barcode concepts, types and classifications, major technology players, and applications in mobile commerce. Then, it reports a research project to develop a 2D-barcode processing solution to support mobile applications. Moreover, the paper also presents the application examples, and case study using the solution.