The first ATM used radioactive carbon for security
In 1967, London's first ATM revolutionized banking, using radioactive carbon-14 for security while dispensing £10 vouchers, paving the way for modern self-service banking.
On June 27, 1967, the world's first ATM debuted at a Barclays Bank in London. Invented by John Shepherd-Barron, it allowed cash withdrawals outside banking hours, a revolutionary idea. Customers inserted a special check and entered a PIN to receive a £10 voucher, redeemable inside the bank.
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