Gizmodo Japan: Auto door
maybe not what you would think, right out of a science fiction movie, but this may be useful.
This Fukuda’s Automatic Door , opening to fit the person or object's shape coming through.
Its motion-detecting portal saves energy by keeping a door from having to open and close all the way, which helps to maintain a stable temperature in a room, and can prevent dirt or other materials from entering.
check out this video of the prototype (Real Audio Video stream)
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