Google Glass, Fitbits, and the Apple Watch are just the latest products in a long evolution of wearable technology. One of the earliest examples was developed in 1955: a computer the size of a deck of cards
, wedged in a shoe, to help gamblers up the odds on roulette in Vegas. Then, in the early 1990s, Georgia Tech computing professor Thad Starner started wearing his homebrew computing device
: safety goggles with a personal display glued to them, attached to a small handheld controller and a wireless modem. He later went on to work on Google's Project Glass.