A device (10) for reading a magnetic stripe and/or chip card has a card reader (16) for reading out data from the magnetic stripe and/or chip card, said card reader having a transport path (14) along which the magnetic stripe and/or chip card is moved when it is inserted into the card reader (16) and/or when it is removed from the card reader (16) and/or is received during the readout of data. Further, the device (10) has an image capturing unit (20) for capturing images of the card reader (16). The card reader (16) is designed to use images captured by the image capturing unit (16) to detect whether a skimming module is inserted into the transport path (14) of the card reader (16).