marked with carbon-14 for machine readability and security, which in a latter model were matched with a six digit personal identification number (PIN).[18][21] Shepherd-Barron stated; "It struck me there must be a way I could get my own money, anywhere in the world or the UK. I hit upon the idea of a chocolate bar dispenser, but replacing chocolate with cash."[18]The Barclays-De La Rue machine (called De La Rue Automatic Cash System or DACS)[22] beat the Swedish saving banks' and a company called Metior's machine (a device called Bankomat) by a mere nine days and Westminster Bank’s-Smith Industries-Chubb system (called Chubb MD2) by a month.[23] The online version of the Swedish machine is listed to have been operational on 6 May 1968, while claiming to be the first online cash machine in the world (ahead of a similar claim by IBM and Lloyds Bank in 1971).[24] The collaboration of a small start-up called Speytec and Midland Bank developed a fourth machine which was marketed after 1969 in Europe and the US by the Burroughs Corporation. The patent for this device (GB1329964) was filed on September 1969 (and granted in 1973) by John David Edwards, Leonard Perkins, John Henry Donald, Peter Lee Chappell, Sean Benjamin Newcombe & Malcom David Roe.Both the DACS and MD2 accepted only a single-use token or voucher which was retained by the machine while the Speytec worked with a card with a magnetic stripe at the back. They used principles including Carbon-14 and low-coercivity magnetism in order to make fraud more difficult.
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