Fraudsters use the devices to film customers' personal identification numbers (PIN) allowing them to steal cash.
Police discovered an iPod Nano taped to the roof of a cash machine in St Vincent Street, Glasgow, at the weekend. They were called after a member of the public became suspicious.
The thieves tape an iPod to the roof of a cash machine and place a loop of plastic into the card slot, which traps any card put in the machine. Customers believe their card has been retained by the machine and when they leave the thief removes the device and steals the card. They then watch footage from the iPod of the customer entering their personal identification (PIN) number.
City centre police regularly check cash machines for signs of tampering but people are advised to take extreme care when using ATMs.