Wearable tech has become one of the popular topics for many companies and start-ups, including LED-lit clothes, shoes and backpacks. We have looked at LED-lit skirts and high heels for girls and LED-lit backpack for cyclists. They all use LED technology and provide a selection of control. But Sync Footwear offers something different. This pair of shoes can make you the highlight at clubs.   A Miami- based team creates a pair of shoes that gives user full control to the LEDs on their foot and a chance to overwhelm everyone at clubs. The start-up has successfu...