At the very tail end of its Galaxy S III event, Samsung promised one more surprise -- and what it gave us was a special retail strategy. The company will be opening Mobile Pin locations, or glass-housed pop-up stores, to help showcase its new flagship phone. Those at the event got to look at examples of the stores first-hand. Everyone else will get a look in the near future, with Mobile Pins appearing at least within London. We've got a gallery below to explore the locations in more detail. Gallery: