Rx/Tx is an iPhone app that allows you to share files between iPhones just like in the 1970's. It uses Audio Frequency Shift Keying (AFSK) at a speed of 2400 Baud (that is 2400 bits per second, so quite slow for today's measures). I did the app and the video to document the outcome of my bachelor thesis in Computer Science and Media at the Bauhaus-Universität Weimar in summer 2012.

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