who invented atm machine

The invention of the cash machine (ATM) is often credited to the India-born British inventor **John Shepherd-Barron**. He led the team that installed the world's first functional ATM at a Barclays Bank branch in London in 1967. This early version used chemically coded paper cheques and a personal identification number (PIN). However, the foundational patent for the PIN system, a critical component of modern ATMs, is often attributed to the Scottish engineer **James Goodfellow**. Therefore, the ATM as we know it is an amalgamation of the work of several inventors.