At the front of an auditorium filled with hundreds of people, a programmer from the Ukraine slipped on a pair of thick, black gloves, each dotted with flex sensors and a micro controller. A couple of feet away was a smartphone receiving signals from the gloves via Bluetooth. When the time was right, the programmer made a gesture, carefully and deliberately moving his hands and arms, before an automated female voice boomed through the speakers: “Nice to meet you.” The audience cheered.