Taiwan's Yin Yueh Macherel (L) and Hsiang-Chi Wu present on April 2, 2014 a invention -- some adjustable massage insoles with multiple independant heads --during the opening day of the International Exhibition of Inventions of Geneva one of the world's largest exhibition devoted to innovation with some 60,000 visitors.expected. AFP PHOTO / FABRICE COFFRINI (Photo credit should read FABRICE COFFRINI/AFP/Getty Images)
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