A biosensor interface apparatus that utilizes pre-existing or standard electrical connectors of mobile devices such as smart phones, mobile media players, and tablets. The interface device transforms the input biosensor signals to compatible electrical signals for input to one or more of the mobiles connectors. That signals are then conducted via one or more input conductors in the connectors to the mobiles microprocessor, which may display or transmit the biosensor signals and derive further measurements from them.
