Brits are more likely to change their spouse than their PIN number, according to new study conducted by digital financial services provider Intelligent Environments.

The survey of more than 2,000 UK consumers, found that 19% of Brits have not changed their PIN number in more than 15 years, while the average marriage that ends in divorce lasts 11.5 years.

Clayton Locke, chief technology officer at Intelligent Environments, said: "With so many passwords to remember, no one wants to keep changing their four digit ATM codes. Unfortunately this increases the risk that a criminal could gain access to your accounts."

Cash machine fraud now accounts for £32m of losses per year. There are three common scams. Skimming devices can be installed in the card slot, recording card details as they are entered into the machine. These are often used alongside hidden cameras positioned to capture the PIN.

The research also found that the PIN number is rapidly losing confidence amongst banking customers. More than 40% of banking respondents said they do not believe a PIN is a safe way to log in to a cash machine, and worry about it being stolen.

Nearly 60% of the participants said they want their banks to provide more robust alternative security methods.

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"There’s a great opportunity for banks to employ second factor authentication using these methods, for example by installing fingerprint scanners on their cash machines, or enabling remote identification through a smartphone. These could help give customers a far more enhanced and secure banking experience, regardless of whether they change their PINs," Locke added.