"In 2007, a plastic robot named "Spykee" arrived. The robot is controlled using a WiFi interface, has a webcam and can climb stairs". As far as I can tell this is not true and a common misconception. A quick internet search reveals that sellers and promoters of the Spykee robot often casually mention its stair climbing ability, but user forums by people that have bought the robot clearly state it does not climb stairs. Its design would indicate it cannot climb stairs and there is no footage of the robot climbing stairs on youtube. It may well be that the robot can climb scale stairs of about an inch high, but this is not made clear and the implication is that the robot can climb domestic stairs. I intend to edit this to "the Spykee robot cannot climb stairs contrary to what is often claimed" if there is no response to this item.