Apple preparing for patenting Smart Shoes. Smart Shoes are equipped with sensors, which sense wear of the shoes and warn the user via Wi-Fi when time for new kicks. Patent claims that, "as the shoe wears out, the support provided by the shoe decreases. When support provided by the shoe decreases to a significant level or when the shoe wears out to a significant level, it may not be visible clearly. But the sensors sense the reduction in support and warns the user via Wi-Fi".