The Future Store in Germany tries out the latest retail technology on its staff and customers.
But as the BBC's Kabir Chibber reports, not every new idea catches on.
For more info: BBC:Future super market in Germany
|Carlos Slim Helu|
|Hong Kong, China|
|The blue star near the center of this image is Zeta Ophiuchi. When seen in visible light it appears as a relatively dim red star surrounded by other dim stars and no dust. However, in this infrared image taken with NASA's Wide-field Infrared Survey Explorer, or WISE, a completely different view emerges. Zeta Ophiuchi is actually a very massive, hot, bright blue star plowing its way through a large cloud of interstellar dust and gas.|