Take traveling from point A to point B, so a robot can deliver a glass from the kitchen to the dining table: Once it sets out, the robot can try to figure out its position by counting the number of times its wheels have rotated.

WSJ: The Surprising Benefits of Robot Cleaners

GEM, too, but it is counting on Hong Kong's unique position as the financial gateway to China to make a difference.

ECONOMIST: Purest ray serene? | The