ATM is an example of a tertiary sector that is also known as the service sector.
The full form of ATM is Automated teller Machine, it is an electro-mechanical machine which consists of automated banking platforms that allow clients to perform smooth transactions without the assistance of a branch representative or teller. A debit card or credit cardholders should be able to withdraw cash at most ATMs. The first ATM turned up at a Barclays Bank branch in London in 1967, though there are records of a cash dispenser in Japan in the mid-1960s. The interbank transaction that allowed a customer to use one bank’s card at another bank’s ATM in the 1970s.