Card reading assembly and self-service terminal equipped with the same as well as method for monitoring the same
A card reading assembly for a self-service terminal includes a storing compartment for a card containing data to be read. The self-service terminal includes at least one sensor and an evaluation device connected hereto and the card reading assembly is protected against manipulation attempts by arranging at least one sensor in the card reading assembly and at least one linearly extending sensor arrangement that is attached in the storing compartment. The evaluation device checks at least one spatial dimension of the card via the sensor arrangement. Preferably, the sensor system is a sensor arrangement including a plurality of linearly extending sensor elements that extend in a first direction or a second direction in relation to the card retracted into the storing compartment. It can be effectively determined whether a retracted card is a genuine card of if a manipulation is present that targets the inside of the card reading assembly.
1. A card reading assembly for a self-service terminal, comprising a housing into which a card is inserted to be read, comprising sensors and/or actuators connected to an evaluation device and comprising a plurality of piezo-electric transducers,
wherein the plurality of piezo-electric transducers are arranged in or on the housing such that the integrity of the card reading assembly, in particular the housing, is testable, the evaluation device configured to control a first of the plurality of piezo-electric transducers to excite at least a portion of the card reading assembly to vibrate, a second of the plurality of piezo-electric transducers configured to sense vibration and generate an output signal in response to the vibration of the at least a portion of the card reading assembly, the output signal corresponding to a sensed frequency of the vibration, the evaluation device also configured to receive the output signal from the second of the plurality of piezo-electric transducers, the evaluation device also configured to compare the received output signal with at least one predetermined frequency, and the evaluation device also configured to issue a warning signal in response to a deviation between the frequency represented by the output signal and the at least one predetermined frequency, the warning signal indicating a lack of integrity of the card reading assembly.
2. The card reading assembly according to claim 1 , wherein a storing compartment is arranged in the housing in which the inserted card can be positioned in order to read out data stored on the card, the content of the storing compartment influencing the frequency represented by the output signal.
3. The card reading assembly according to claim 2 , wherein the evaluation device manages reference data for different states of the card reading assembly, in particular whether a card is located in the storing compartment or whether there is no card in the storing compartment, wherein the reference data are managed by a classifier.
4. The card reading assembly according to claim 1 , wherein the evaluation device is configured to receive the output signal in response to at least one event.
5. The card reading assembly according to claim 4 , wherein the at least one event is one or more of the following: expiration of a period of time, detection by a sensor that a card has been inserted.
6. The card reading assembly according to claim 1 , wherein the second of the plurality of piezo-electric transducers is operated at the natural frequency of the components and/or component groups or the housing.
7. The card reading assembly according to claim 1 , wherein the plurality of piezo-electric transducers further comprise a third piezo-electric transducer, the third piezo-electric transducer positioned on a side of the housing serving as a sensor.
8. A card reading assembly for a self-service terminal, comprising a housing into which a card is retractable to be read, comprising sensors and/or actuators connected to an evaluation device and comprising a plurality of mechatronic transducers,
wherein the mechatronic transducers are arranged in or on the housing such that the integrity of the card reading assembly, in particular the housing, is testable, the evaluation device being arranged to receive from the mechatronic transducers a signal which is excited by a part of the mechatronic transducers and is detected by a part of the mechatronic transducers in order to compare it with reference data, and to issue a warning signal in case of a defined deviation, indicating a lack of integrity of the card reading assembly, and wherein the evaluation device activates the mechatronic transducers to carry out a sweep from 100 Hz to 5 kHz, which starts at 100 Hz and ends at 5 kHz.
9. The card reading assembly according to claim 8 , wherein the sweep for the analysis is divided into frequency ranges or is excited only in partial frequencies, whereby different methods for pattern recognition are applicable to each frequency range.
10. The card reading assembly according to claim 9 , wherein a feature extraction is applicable to the frequency ranges, in order to then apply classifiers determining a condition to the extracted features.
11. A self-service terminal, in particular an automatic teller machine, with a card reading assembly according to claim 1 .