Former US President Donald Trump has launched a collection of digital trading cards depicting him in various guises including a superhero, astronaut and Nascar driver. The cards are being offered as a "non-fungible token" (NFT), a way of owning the original digital image. Where Bitcoin was hailed as the digital answer to currency, NFTs are now being touted as the digital answer to collectables, but plenty of sceptics fear they're a bubble waiting to burst.What is a non-fungible token?In ...
