Abstract: A headset system for tracking eye motion, reaction, facial features, and focus of a user. The system may include an inward-facing camera directed at the front of the user's face to capture image data associated with the eye movement, facial expressions, reaction, and focus of the user. The system may also include at least one additional outward-facing camera directed away from the user's face to capture image data of the viewable content of the user.

Abstract: A headset system for tracking eye motion, reaction, facial features, and focus of a user. The system may include an inward-facing camera directed at the front of the user's face to capture image data associated with the eye movement, facial expressions, reaction, and focus of the user. The system may also include at least one additional outward-facing camera directed away from the user's face to capture image data of the viewable content of the user.

Abstract: Compositions and methods useful for imparting coloration to various substrates including plastics, paper, wood, fabrics, fibers and textiles. Materials comprising water-soluble colorants including an amidine group and a chromophore moiety are contacted with a substrate, and the substrate permitted to dry to provide substantially water-proof coloration on the substrate. In one embodiment an ink, coating, or dye is an aqueous composition comprising one or more amidines as provided herein, which is contained within a vessel that includes a gas at an effective level of pressure to enable the gas to react with an amidine as herein provided, to provide and maintain the amidine substantially in its protonated form prior to application of the aqueous composition to a desired substrate.

Abstract: A unitary container for the accessible storage and convenient transportation of books and/or the like featuring top and bottom surfaces which are other than solid, being composed of various longitudinal slats spaced such that, when two or more units are stacked in a bookcase configuration, the top slats of lower units interpose between the bottom slats of upper units to form an effectively solid planar shelf for the storage of books and/or the like within each upper unit. The spaces between the slats are large enough to allow this function, and at the same time small enough to provide effective containment of books and/or the like when an individual container is removed from the stack and used for transportation of said books and/or the like. Additionally, the container features conventional nesting means whereby it may be stacked and interlocked with other like containers in an alternate configuration with the planes of the rear panels parallel to the ground.