Tiny pin-prick holes on cash machines are the latest way fraudsters are trying to cheat unsuspecting Londoners out of their bank details.
Mini cameras have been discovered by police in four cash machines in the City, with the latest found within the last week.
The recording device is hidden inside a false cover to the cash dispensing slot, with the aim to record the victim putting in their pin number.
Two were found at a cashpoint in St Paul’s Churchyard within weeks of each other, on February 18 and March 7.
Another device was removed by a member of the public in nearby Smithfield Street on March 8.
And on March 2 a camera was found on a cashpoint in Fetter Lane by a member of the public who removed it to get their card back from the machine.
Police are now warning people to be wary when getting cash out and to always cover the keypad as they enter their details.
City Police posted on Twitter: “Fraudster’s camera bar recovered from an #ATM near @StPaulsLondon.
“Please remember to cover your pin when using a cash machine”.
Police also advised people to check cash machines for any loose parts, including the card slot and keypad.
PC Matt Clarke, from the City of London Police Crime Squad, said: “The vast majority or cashpoints in London are perfectly safe - but criminals have been known to tamper with them.
“We work closely with banks, building societies, and other cash machine vendors, to make sure this type of crime doesn't happen.
“Take care and stay vigilant when using cash machines in the City of London, and London as a whole.
“If you spot anything unusual about a cash machine, or if there are signs of tampering, don’t use it. If in doubt, try and use a machine inside a branch.”
If you spot a suspicious device when using a cash point, report it to the bank concerned immediately, and notify police. If you think a crime is in progress when you discover the device, call 999.