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Pocket camera helps the visually impaired navigate the world
This might be one of the least invasive sight aids for the visually impaired that we've spotted: it's a camera that sits in the shirt pocket, Her-style, and uses auditory alerts to warn when the user approaches obstacles. The idea here is to help folks with loss of peripheral vision (from glaucoma, for example) to keep from bumping into things. The device uses time-to-collision predictions rather than proximity sensors, so rather than a constant beep just because you're standing next to a pillar, the gizmo will apparently only ping you when you might actually run into said pillar.
