April 1, 2011:
Google announced the introduction of Gmail Motion, a new technology that would allow people to write emails using only hand gestures. Gmail Motion, the company explained, used a computer's webcam and a "spatial tracking algorithm" to track a person's gestures and translate them into words and commands. For instance, a person could 'open a message' by making a motion with their hands as if opening an envelope. Or they could 'reply' to a message by pointing backward over their shoulder. By 2011, Google had become well-known
for making spoof announcements every April first, with its annual spoofs both highly anticipated and widely shared. (The company earns a place in the Top 100 largely on the basis of that alone). But Gmail Motion was one of its more believable jokes. In fact, within a few days programmers had demonstrated that it was possible (if not practical) to create a working, gesture-based email system like Gmail Motion using existing, off-the-shelf technology.