COMMUNICATION OF OPTICAL CODES BETWEEN DEVICES

Systems, devices, methods and techniques are provided to improve communication of data over a distance without using radio waves using a sequence of frames comprising optical codes. In one embodiment, the frames include multiple channels where each channel comprises the same optical codes but in a different order of a code sequence. In one embodiment, at a receiving device, a progress indicator is provided that is responsive to the decoding of the optical codes. In one embodiment, the progress indicator is indicative of frames (codes) read. In one embodiment, the progress indicator is a timer. In one embodiment, at a sending device, controls are provided for user input to selectively communicate frames (codes). In one embodiment, at a sequence generator, data is segmented to define frames to optimize communications.