Rare British coin 'worth £72,000' sparks hunt despite 'only a handful' in existence - could you have one?
A handful of one of the world's rarest coins are thought to be in existence but you might find one in your change ...
Unique gold coin signed by The Beatles' Paul McCartney sells for $600,000 at auction
Use precise geolocation data and actively scan device characteristics for identification. This is done to store and access ...