Computer hardware and software for providing a user interface involving eye tracking and/or eye movement for wearable devices; computer hardware; computer peripherals; wearable computer peripherals; computer hardware for remotely accessing and transmitting data; computer peripherals for remotely accessing and transmitting data; computer peripherals for mobile devices for remotely accessing and transmitting data, namely, computer peripherals worn on the head for mobile devices for remotely accessing and transmitting data as well as computer hardware, computer peripherals, computer hardware for remotely accessing and transmitting data, computer peripherals for mobile devices, wearable computer peripherals worn on the head for mobile devices, wearable computer peripherals to produce video images of the eye, detect eye gaze, direction and area of interest, track eye movements, identify blink characteristics, identify attributes and features of the eye including identification of the wearer of the hardware through eye attributes, collect occulometric data and visual behavior information; computer hardware for displaying data and video; computer peripherals for displaying data and video; computer peripherals for mobile devices for displaying data and video, namely, computer peripherals worn on the head for mobile devices for displaying data and video