ski goggles, military goggles, sports goggles, parachuting goggles, paragliding goggles, base jumping goggles, paintball goggles, protection goggles, mountain climbing goggles; head mounted displays (HMD), namely, head or helmet mounted optical displays; head mounted display systems (HMD systems) comprising HMD and built-in or external hardware for generating data to be displayed on HMD; heads-up displays (HUD), namely, transparent displays that present data without requiring users to look away from their usual viewpoints; heads-up display systems (HUD systems) comprising HUD and built-in or external hardware for generating data to be displayed on HUD; inertial measurement units (IMU) comprising accelerometers and gyroscopes for measuring and reporting attitude, position, movement, velocity, angle, orientation and gravitational forces; software applications, namely, desktop and web applications for displaying and overlaying on maps data downloaded from HMD, HMD systems, HUD, HUD systems or IMU and for processing, filtering, sharing or manipulating such data; mobile phone applications for use in association with HMD, HMD systems, HUD, HUD systems or IMU and for storing and displaying data from HMD, HMD systems, HUD, HUD systems or IMU; computer software platforms for developing desktop and web applications, mobile phone applications for use in association with HMD, HMD systems, HUD, HUD systems or IMU