A contact lens for lens-to-lens communication includes blink detection circuitry, one or more electrodes, a logic engine, and data transmission circuitry. The blink detection circuitry is configured to generate a blink signal in response to a blinking of an eye. The logic engine is coupled to receive the blink signal from the blink detection circuitry. The data transmission circuitry is coupled between the one or more electrodes and the logic engine. The logic engine causes the data transmission circuitry to drive electrical data signals onto the one or more electrodes in response to the blink signal reaching a pre-determined threshold.