More than three quarters (76 per cent) of Brits are worried about their card details being copied when they use cash machines.
This type of crime is known as "skimming", where fraudsters use special technology to seize details that they can then use to steal funds from customers' bank accounts.
The research, carried out by Lloyds TSB, also found that 77 per cent of its customers would be more confident at the cash point if they knew it had an anti-skimming device fitted.
More than a fifth (22 per cent) of people polled also said that they had changed their mind about using a particular ATM when they found it didn't have one of these devices.
Although a minority of people said that they had started using cash machines less (13 per cent). or going inside branches more (23 per cent), more people are increasing their vigilance at cash points.
A decisive 81 per cent of respondents said they now made a point of looking over their shoulder to check that nothing is suspicious before inserting a card.
Lloyds TSB has introduced its own anti-skimming devices, as "there is no room for complacency", said Matthew Timms, internet and ATM director.
"We are doing everything we can to ensure that our cash machines are safe to use but we also need customers' help," he continued. To read more about credit cards, click here.
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