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Use your smartphone to catch digital Pokémon’s that can appear in your surroundings. It has an AR mode that lets you see the Pokémon placed on the physical environment through the camera and get easier to catch.
Building an augmented school gymnasium for technology-assisted teaching.
Mapping or shaping a surface in three dimensions with dynamic visual (and audio?) feedback.
Turn the steps of the staircase into a piano keyboard and have each step play its corresponding note when stepped upon. The aim is to motivate people to use the stairs rather than the escalator.