Abstract: An augmented reality, virtual reality, or other wearable apparatus comprises an eye tracking device comprising an image sensor, a lens, and one or more processors. In some embodiments, the lens comprises a marker, and the one or more processors are configured to receive an image from the image sensor, wherein the image shows the marker, determine a distance from the image sensor to the marker based on the image, and change a calibration parameter of an eye tracking algorithm based on the distance. In some embodiments, the one or more processors are configured to receive image data from the image sensor, wherein the image data corresponds to an image as observed through the lens, determine a level or pattern of pincushion distortion in the image based on the image data, and change a calibration parameter of an eye tracking algorithm based on the level or the pattern of pincushion distortion.

Abstract: This apparatus uses queue control gates with passenger information scanners, zone indicators, and a controller to organize and sequence passengers prior to entry into an aircraft to reduce row and seat interference with other passengers. It allows airlines to decrease the gate time of their aircraft.

Abstract: An office desk that can be used for traditional tasks and yet provides concealment for, yet readily available access to, computer equipment. The desk top consists of a fixed section, a separable section, and a covering section. The separable and covering sections cover an equipment compartment which contains the computer equipment. The equipment compartment is located toward either the right or left side of the desk. The separable section is located along the frontal edge of the desk top and can be opened to expose the front part of the concealed computer equipment. When in the open position, the separable section provides a working surface which forms an "L" shape with the desk top and which is capable of supporting a keyboard. The working surface is adjustable in height. The covering section is removed when computer equipment housed in the equipment compartment must be installed or replaced.