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Secure Real World Interaction Using Mobile Devices

As the capabilities of mobile devices grow, so do the potential uses for real-world interactions. Using commonly carried devices, such as cell phones and PDAs, to assist in routine tasks, such as using vending machines or ATMs, is an emerging area of ubiquitous computing. However, with the increase in potential uses, the potential for misuse and attacks also increase. In this paper, we present a secure method of using mobile devices to interact with real world objects. Our model uses two dimensional colorized barcodes to easily establish a secure link between mobile devices and service points. We discuss the model, its security, and potential uses for common tasks. We also discuss potential security concerns, and cover potential cases where this model could be used to both automate and control commonly performed tasks.