The Automated Teller Machine (ATM) has transformed the banking industry by allowing customers to access banking services without visiting a bank counter. The development of the ATM was the result of several inventions and technological improvements made over many years. From early cash dispensing concepts to today’s advanced digital ATMs, the technology has continuously evolved to provide faster, safer, and more convenient banking services.
Early Development of Automated Banking
The concept of providing banking services outside normal banking hours was first introduced in Japan, the United Kingdom, and Sweden. The primary objective was to allow customers to access cash and perform basic banking transactions whenever required, without depending on bank staff.
One of the earliest attempts to automate banking was made in 1960 by Luther Simjian, an Armenian-American inventor. He developed an automated deposit machine known as the Bankograph. Unlike modern ATMs, this machine accepted coins, cash, and cheques for deposit but did not dispense cash.
Simjian filed a U.S. patent for the Bankograph on 30 June 1960, and the patent was granted on 26 February 1963. However, commercial deployment was delayed because his company, Reflectone Electronics Inc., was acquired by another organization.
An experimental Bankograph was installed by the City Bank of New York in 1961, but the machine remained in service for only six months because customers showed little interest in using it.
Development of Card-Based Authentication
In 1962, Adrian Ashfield introduced the idea of using a card-based identification system to securely recognize users and control the dispensing of goods and services.
His invention made it possible to verify the identity of a customer electronically before allowing access to banking services. The idea was patented in the United Kingdom in 1964 and became an important step toward the secure card-based authentication systems used in modern ATMs.
Early Cash Dispensing Machine
In 1966, a Japanese machine known as the Computer Loan Machine introduced another significant development in automated banking. Instead of providing direct access to a customer’s bank account, the machine dispensed cash as a three-month loan after a customer inserted a credit card. The loan carried an annual interest rate of 5%.
Although very little detailed information about this machine is available today, it represents one of the earliest examples of an automated cash dispensing device.
The World’s First ATM
The machine generally recognized as the world’s first Automated Teller Machine (ATM) was installed on 27 June 1967 at a Barclays Bank branch in Enfield, North London, United Kingdom.
The ATM was officially inaugurated by English actor Reg Varney, who participated in the promotional launch event.
The machine was developed by the engineering team led by John Shepherd-Barron of the printing company De La Rue. In recognition of his contribution to banking technology, Shepherd-Barron was later awarded the Order of the British Empire (OBE) in 2005.
Unlike modern ATMs that use plastic cards, the first Barclays machine operated using special paper cheques or vouchers issued by bank tellers. These paper vouchers were marked with Carbon-14, making them machine-readable while also providing additional security. Customers also entered a four-digit Personal Identification Number (PIN) to verify their identity.
According to Shepherd-Barron, the inspiration for the ATM came from observing chocolate vending machines. He believed that if a machine could dispense chocolate automatically, it should also be able to dispense cash.
Development of Early ATM Technologies
Following the success of the Barclays ATM, several organizations quickly developed their own automated cash dispensing systems.
The Barclays–De La Rue Automatic Cash System (DACS) was introduced just nine days before the Swedish Bankomat system and approximately one month before the Chubb MD2 system developed for the Westminster Bank in the United Kingdom.
The Swedish Bankomat later became one of the first online ATMs, entering operation on 6 May 1968. Unlike earlier systems, online ATMs communicated directly with the bank’s central computer, allowing immediate account verification.
Another important development came from a startup company named Speytec, which worked with Midland Bank to develop an ATM using plastic cards with magnetic stripes instead of single-use vouchers. This technology later became the standard method for ATM card authentication.
To improve security and reduce fraud, these early ATM systems used technologies such as Carbon-14 identification and low-coercivity magnetic stripes.
Development of the PIN System
One of the most important innovations in ATM technology was the development of the Personal Identification Number (PIN).
In 1965, a team of engineers working for Smiths Group on the Chubb MD2 system developed the concept of storing a customer’s PIN on the ATM card itself. This work is primarily credited to James Goodfellow.
Goodfellow’s patented system allowed the ATM to verify the customer’s identity automatically without requiring assistance from bank staff. His invention became the foundation for secure ATM authentication and influenced nearly all later ATM designs.
Many leading ATM manufacturers, including NCR Corporation and IBM, later licensed Goodfellow’s PIN technology, and his patent became one of the most influential developments in the ATM industry.
Worldwide Expansion of ATMs
After their successful introduction in the United Kingdom, ATM technology rapidly spread to many other countries.
In 1968, the Bank of Scotland introduced the DACS system under the brand name Scotcash. Customers received £10 vouchers along with personal identification numbers, allowing them to withdraw cash from the machines.
Australia installed its first ATM in Sydney during 1969. This Chubb-manufactured machine dispensed 25 Australian dollars per transaction. After each withdrawal, the customer’s bank card was mailed back once the bank completed transaction processing.
Spain installed its first ATM on 9 January 1969 in Madrid by Banesto. This machine, known as Bancomat, dispensed 1,000 peseta banknotes, with customers allowed to withdraw between one and five notes per transaction. Users authenticated themselves by entering a personal security code using a numeric keypad.
In West Germany, the first ATM was installed on 27 May 1968 in Tübingen by Kreissparkasse Tübingen. Built by Ostertag AG in collaboration with AEG-Telefunken, the system used a plastic identification card, a double-bit key, and punched cards to authorize withdrawals. Customers could withdraw up to 400 Deutsche Marks (DM) per day.
Introduction of ATMs in the United States
The development of ATMs in the United States was led by Donald Wetzel, who worked for Docutel, a subsidiary of Recognition Equipment Inc. in Dallas, Texas.
After studying European ATM systems, Wetzel and his team designed an American version of the ATM.
On 2 September 1969, Chemical Bank installed the first prototype ATM in the United States at its branch in Rockville Centre, New York.
The earliest American ATMs dispensed a fixed amount of cash whenever a customer inserted a specially coded card.
To promote the new technology, Chemical Bank launched an advertising campaign with the famous slogan:
“On Sept. 2 our bank will open at 9:00 and never close again.”
Initially, many bank executives were uncertain whether customers would trust machines with their money, and the high cost of the equipment also raised concerns. However, successful testing demonstrated that customers readily accepted the technology and were even willing to pay transaction fees.
By 1974, Docutel had captured approximately 70% of the U.S. ATM market before later merging with the American subsidiary of Olivetti during the economic recession of the early 1970s.
Further Technological Advances
ATM technology continued to evolve rapidly during the 1970s.
In April 1971, Busicom began manufacturing ATMs based on the Intel 4004, the world’s first commercially available microprocessor. These microprocessor-based ATMs were produced for several companies, including NCR Corporation.
Another major advancement came from Mohamed Atalla, who invented the first Hardware Security Module (HSM), known as the Atalla Box.
The Atalla Box encrypted ATM messages and PIN information, greatly improving transaction security. It also introduced a secure PIN verification system that prevented unauthorized access to customer accounts.
Commercially launched in 1973, the Atalla Box became one of the most influential security technologies in ATM history. Its encryption methods were later adopted by much of the global banking industry, and modern Hardware Security Modules continue to use similar security principles.
IBM and Modern ATM Development
In December 1972, IBM introduced the IBM 2984 Cash Issuing Terminal at Lloyds Bank in Brentwood, Essex, United Kingdom.
This machine closely resembled modern ATMs and became known by the trademark Cashpoint, a name that is still widely associated with ATMs in the United Kingdom.
Unlike earlier machines, the IBM 2984 operated online, allowing customers to withdraw variable amounts of cash, with the amount immediately deducted from their bank account.
IBM later introduced several other important ATM models, including the IBM 3614, IBM 3624, and IBM 473x series, all of which significantly influenced ATM technology.
ATM Networking and Shared Banking
A major breakthrough occurred on 3 February 1979, when the first ATM switching network enabling shared ATM access between different banks became operational in Denver, Colorado.
Developed through a collaboration between Colorado National Bank of Denver and Kranzley and Company, this system allowed customers of one bank to use ATMs operated by another participating bank, greatly expanding ATM accessibility.
Modern ATM Innovations
ATM technology continues to evolve to meet changing customer needs.
In 2012, the Royal Bank of Scotland introduced a cardless cash withdrawal service. Instead of inserting a physical ATM card, customers could request a six-digit code through their smartphones and use that code to withdraw up to £130 from an ATM.
This innovation marked another step toward digital and contactless banking, combining traditional ATM services with mobile technology while maintaining secure customer authentication.