Two-way communication between an electronic card and a touchscreen device
Abstract:
Systems and methods of bi-directional communication between an electronic card and a touchscreen device is described. The method may include modulating an electrostatic field of the touchscreen device using touch communication channels; receiving visible light signals from the touchscreen device in response to the modified electrostatic field via one or more optical communication channels; ranking, by the electronic card, the optical communication channels according to the signal quality received from each optical communication channel; selecting at least one optical communication channel as preferred optical communication channel based on the ranking; and using the preferred optical communication channel and the touch communication channels for subsequent bi-directional communication.
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