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By smart bracelet and fixed positional instrument, main function makes absent-minded elders with precisely movement monitor, by accurate control, at any urgent time, their family can use the instrument to search for them in a screen, connecting to the missing person\'s website necessarily and automatically, being provided for volunteer to help them to look for.
The chip hand carried by elder wreath, inside set up data of wearing, let the public find back way home for him.
Oriental Institute of Technology