Intelligent luggage: Suitcases that check themselves in

The R1 is a self-propelled suitcase being developed by Chinese company Cowarobot. It will follow its owner using a smartphone connection and sensors will help it to avoid obstacles.

Besides getting wheels, luggage hasn't seen a lot of innovation over the decades. However, that might be about to change as the "Internet of things" makes its presence felt in the world of the humble suitcase. 

Smart luggage is starting to appear in airport lounges and terminals – that is, luggage equipped with digital technology. The range of functionality is broad, from mobile phone charging capacity to GPS tracking.