EP1924979A1 - Dispositif pour identifier des composantes etrangeres metalliques - Google Patents

Dispositif pour identifier des composantes etrangeres metalliques

Info

Publication number
EP1924979A1
EP1924979A1 EP06792871A EP06792871A EP1924979A1 EP 1924979 A1 EP1924979 A1 EP 1924979A1 EP 06792871 A EP06792871 A EP 06792871A EP 06792871 A EP06792871 A EP 06792871A EP 1924979 A1 EP1924979 A1 EP 1924979A1
Authority
EP
European Patent Office
Prior art keywords
electromagnetic field
control unit
signal
sound card
coil
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP06792871A
Other languages
German (de)
English (en)
Inventor
Dieter Schliebe
Michael Nolte
Thomas Nickel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wincor Nixdorf International GmbH
Original Assignee
Wincor Nixdorf International GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wincor Nixdorf International GmbH filed Critical Wincor Nixdorf International GmbH
Publication of EP1924979A1 publication Critical patent/EP1924979A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
    • G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
    • G01V3/104—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07F—COIN-FREED OR LIKE APPARATUS
    • G07F19/00—Complete banking systems; Coded card-freed arrangements adapted for dispensing or receiving monies or the like and posting such transactions to existing accounts, e.g. automatic teller machines
    • G07F19/20—Automatic teller machines [ATMs]
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07F—COIN-FREED OR LIKE APPARATUS
    • G07F19/00—Complete banking systems; Coded card-freed arrangements adapted for dispensing or receiving monies or the like and posting such transactions to existing accounts, e.g. automatic teller machines
    • G07F19/20—Automatic teller machines [ATMs]
    • G07F19/205—Housing aspects of ATMs
    • G07F19/2055—Anti-skimming aspects at ATMs
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07F—COIN-FREED OR LIKE APPARATUS
    • G07F19/00—Complete banking systems; Coded card-freed arrangements adapted for dispensing or receiving monies or the like and posting such transactions to existing accounts, e.g. automatic teller machines
    • G07F19/20—Automatic teller machines [ATMs]
    • G07F19/207—Surveillance aspects at ATMs

Definitions

  • the present invention relates to a device for detecting foreign metal components, which are attached in particular to an input and output device of a self-service terminal such as an ATM, statement printer and / or information or transaction terminal fraudulently intended for spying information from third parties. Furthermore, it relates to a method according to claim 14.
  • Such a device is known for example from US 6,422,475 Bl.
  • an ATM with a card reader for reading a magnetic stripe of a customer's bank card is described in which fraudulent intent has been provided by a third party with a small, inconspicuous additional magnetic track reader immediately in front of the insertion slot of the genuine card reader.
  • a customer inserts his bank card into the ATM's genuine card reader, its magnetic track is also read by that foreign magnetic reader, giving the third party knowledge of the customer and account information. Now you can make a copy of the bank card with this information.
  • the third party succeeds in spying on the PIN belonging to the bank card, he can use the counterfeit bank card and the spied out PIN at ATMs to withdraw money from the account of the person being spied on.
  • the detection device of the above-mentioned US 6,422,475 Bl detects the attachment of an additional magnetic track reader by means of a metal detector based on the metallic components of the magnetic head. For this purpose, an electromagnetic field is generated, which in turn generate in the detection objects, as far as they are metallic, a secondary electromagnetic field, which is detected by a detection coil and used for evaluation.
  • the invention is therefore the object of developing a device of the type mentioned so that they can be flexibly adjusted to technical developments of sensors on self-service devices for manipulation purposes. Moreover, it is desirable from a cost point of view to enable a remote control of the detection device.
  • a sound card is used to generate a primary electromagnetic field.
  • the output of the sound card is connected to a first coil, to which an analog output signal of the sound card is forwarded.
  • a second coil detects a secondary electromagnetic field generated by metallic components of sensors of a snubber and is connected to an input of the sound card.
  • the sound card is controlled by a control unit with regard to the frequency and amplitude of the signal to be output. To the control unit and the incoming signals of the sound card for further processing and detection of metallic foreign bodies are forwarded.
  • a sound card is a standardized product that is widely and cost-effectively available for processing external or generating internal audio signals.
  • Sound cards are peripheral devices that are connected to the computer's central processing unit via a data bus, for example via a PCI bus connector, via a USB connection or an IEEE 1394 connection.
  • Sound cards are designed to convert digital signals into analog audio signals that are output through the sound card's speakers or headphone jacks.
  • most sound cards have a microphone input and a music input, through which analog audio data can be input to the soundcard. These analog audio signals are then passed through the Soundcard digitized.
  • a sound card originally designed for processing audio signals is used to generate an electromagnetic field and thus used for metal detection.
  • the sound card Through appropriate reprogramming, it is possible to use the sound card in this way.
  • a standard component can be used and, overall, the detection unit can be manufactured much more cost-effectively.
  • two sound cards can be used, one of which is used to generate the primary electromagnetic field and the other for the detection of the secondary electromagnetic field.
  • sound cards are designed according to their original purpose for the processing of signals with frequencies in the audible range, i. E. for a tone frequency between 20 Hz and 20 kHz. Accordingly, sound cards with a sampling rate of 44 kHz or 96 kHz and a sampling depth of 16 bits (65,536 sound gradations, hi-fi quality) or 24 bits work. The sampling rate is thus less than would normally be the case with a digital signal processor specifically designed for metal detection. However, it has been found that a sampling rate of 44 kHz is already sufficient to safely detect small amounts of metal, provided that suitable analysis software is used. Since in the device of the present invention the analysis of the detection signals takes place in a control unit connected to the sound card on which any software can easily be installed and executed, a large number of powerful and proven analysis programs for signal analysis can be used.
  • the sound card is controlled by the control unit so that it generates a digital signal and outputs to the D / A converter, in which this is converted into the analog output signal.
  • the digital signal can be generated at least partially by frequency modulation synthesis in the sound card.
  • the digital signal in the sound card can be generated at least partially by combining digital signal samples.
  • control unit selects the output
  • Fig.l shows a schematic representation of a device for detecting foreign metal components in particular for the protection of a self-service terminal against fraudulent installations of Ausspähvorraumen.
  • Fig.l shows a schematic representation of a device 10 for the detection of metallic components that have been fraudulently attached, in particular to an input and / or output device of a self-service device of a self-service device such as an ATM, bank statement printer or information terminal.
  • the device 10 comprises a control unit 12 having a central processor (a CPU) 14 and a random access memory (RAM) 16.
  • the central processor 14 is the main processor of a PC whose housing 18 is indicated by dashed lines.
  • the control unit 12 is connected via a network card 20 to a data line 22 for remote data transmission.
  • the sound card 24 is located in the housing 18 of the PC.
  • the sound card 24 is formed as a plug-in card and inserted with a plug portion 26 in an associated plug-in device 28 and connected via a PCI bus 30 to the control unit 12.
  • the use of a sound card in a device to protect an SB terminal from fraudulent installation of spying devices has two particular advantages. On the one hand, a sound card already has the right connections, and the necessary program interfaces exist to reprogram the sound card for non-conforming use. On the other hand, sound cards are available as mass-produced products at low prices, so that the cost of the device as a whole can be significantly reduced.
  • a / D converter 32 On the sound card 24 is an A / D converter 32, a D / A converter 34 and a microprocessor 36, which may be a sound chip or a digital signal processor (DSP).
  • a ROM memory 38 and a RAM memory 40 are connected to the microprocessor 36.
  • the sound card 24 also has a microphone input 42 and a music input (a so-called "line-in” connection) 44. Furthermore, the Sound card 24 a headphone output 46 and a speaker output 48 on. At the headphone output 46, a first coil 52 is connected via a signal amplifier 50, which represents a first inductance for generating a primary electromagnetic field. The first coil 52 is located in a location that is to be protected from installation of an espying device, for example in the immediate vicinity of a card reader of the self-service terminal.
  • a second coil 60 for detecting a secondary electromagnetic field, which is influenced by the interaction of the primary electromagnetic field with the metallic components of a sensor of a Ausspähvorraum connected.
  • the second coil 60 forms a second inductance.
  • a further coil 56 can be connected via a further amplifier 54, which also forms a first inductance for generating a primary electromagnetic field.
  • the coil 56 is located at another location to be monitored for protection from spying devices, such as near a keypad for secret entry (PIN input keypad) or at a location suitable for spying on the PIN and thus at the location fraudulently a small camera could be installed.
  • a further coil 64 is connected as a second inductance for detecting a secondary electromagnetic field.
  • the device is based on the detection of metallic components that are necessarily included in spy-out devices.
  • a primary electromagnetic field is generated by the first inductors 52 and 56, respectively.
  • Each primary electromagnetic field induces eddy currents in potentially present metallic objects, which in turn generate a secondary electromagnetic field which is detected.
  • the central processor 14 of the control unit 12 controls the microprocessor 36 of the sound card 24 so that it outputs a digital signal to the D / A converter.
  • This digital signal is converted in the D / A converter 34 into an analog output signal and output to one of the outputs 46 or 48.
  • This analog output signal is amplified in the amplifiers 50 or 54 and passed on to the first inductors 52 and 56, respectively, which emit a corresponding first electromagnetic field.
  • tivities 52, 56 connected to simultaneously send out several output signals with different frequencies at each location to be monitored.
  • a sound card typically has five to seven output channels to create surround sounds, all of which can be used.
  • the digital signals can be generated by frequency modulation synthesis.
  • the digital signals can also be generated at least partially by combining digital signal samples, so-called wavelets. These digital samples can be stored in the memory 38, 40 of the sound card or else in the working memory 16 of the control unit 12, to which the sound card 24 preferably has direct access. In this way, a plurality of different signals can be generated. Programs for generating different output signals can be transmitted via the data line 22 in the course of remote maintenance on the computer and then loaded into the main memory 16 of the control unit 12. The device shown is thus extremely flexible with regard to the generation of the output signals.
  • the second inductors 60 and 64 are located in the secondary electromagnetic field which, as described above, is generated by the interaction of the primary electromagnetic field with the metallic components of the spotting apparatus.
  • the induced voltages due to the secondary electromagnetic field in the second inductors 60 and 64 are amplified in the amplifiers 58 and 62, respectively, and input to the sound card 24 as analog detection signals via the terminals 42 and 44, respectively.
  • the analog detection signals are digitized in the A / D converter 32 and subsequently processed in the microprocessor 36 of the sound card 24.
  • the processed digital detection signals are sent via the bus connection 30 to the control unit 12 where they are analyzed.
  • To analyze the digital detection signals can be made of known and proven program libraries, because the actual analysis of the data takes place here on a common PC. If, after installation of the device 10 on a self-service device, the need to improve the analysis programs is detected, these can be easily retrofitted by transmitting the updated programs via the data line 22 to the central data processing unit 12.
  • An essential aspect of the analysis program is according to a development in that a metal detection per se is not performed, but a change of the metallic environment is detected in relation to the non-manipulated self-service terminal.
  • the received digital detection signal is compared with a reference signal which corresponds to the previously transmitted output signal.
  • This reference signal reflects the normal metallic environment of the unmanipulated self-service terminal. Only when there are deviations in the received detection signal compared to the reference signal, this is interpreted as an indication of a possible manipulation.
  • first inductors 52, 56 and the second inductors 60, 64 are arranged at locations in the vicinity of which there are no metallic components of the non-manipulated SB terminal.
  • the amplifiers 50, 53, 58 and 62 may be unnecessary depending on the design of the sound card. By controlling the volume of the sound card, the intensity of the detection fields can be regulated.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Remote Sensing (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Storage Device Security (AREA)
  • Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
  • Telephone Function (AREA)

Abstract

L'invention concerne un dispositif (10) et un procédé permettant de protéger un terminal sériel d'une installation frauduleuse de dispositifs espions pour des informations, qui reposent sur une détection de composantes métalliques du dispositif espion. Ledit dispositif (10) comprend une unité de commande (12) et un périphérique (24), qui est relié à l'unité de commande (12) par une interface (26, 28, 30). La carte son (24) présente une sortie pour un signal de sortie analogique, à laquelle peut être reliée une bobine (52, 56) pour produire un champ électromagnétique primaire et une entrée pour un signal de détection analogique, à laquelle est reliée une seconde bobine (60, 64) pour détecter un champ électromagnétique secondaire, qui est influencé par l'interaction entre le champ électromagnétique primaire et les composantes métalliques du dispositif espion. L'unité de commande (12) pilote la carte son (24) pour produire le champ électromagnétique primaire par l'intermédiaire de l'interface (26, 28, 30) et/ou reçoit le signal de détection numérisé et l'analyse, afin de déterminer l'éventuelle présence d'un objet métallique.
EP06792871A 2005-09-14 2006-08-17 Dispositif pour identifier des composantes etrangeres metalliques Withdrawn EP1924979A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005043921 2005-09-14
PCT/EP2006/065393 WO2007048648A1 (fr) 2005-09-14 2006-08-17 Dispositif pour identifier des composantes etrangeres metalliques

Publications (1)

Publication Number Publication Date
EP1924979A1 true EP1924979A1 (fr) 2008-05-28

Family

ID=37312929

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06792871A Withdrawn EP1924979A1 (fr) 2005-09-14 2006-08-17 Dispositif pour identifier des composantes etrangeres metalliques

Country Status (4)

Country Link
US (1) US7780083B2 (fr)
EP (1) EP1924979A1 (fr)
CN (1) CN101263536B (fr)
WO (1) WO2007048648A1 (fr)

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DE102005043317B3 (de) * 2005-09-12 2007-04-12 Wincor Nixdorf International Gmbh Verfahren und Einrichtung zum Erzeugen eines elektromagnetischen Schutzfeldes für ein Kartenlesegerät
WO2010123471A1 (fr) * 2009-04-20 2010-10-28 Cihat Celik Basar Dispositif anti-fraude pour terminaux en libre-service
DE102010060477A1 (de) 2010-11-10 2012-05-10 Wincor Nixdorf International Gmbh Anordnung zum Lesen von Magnetstreifen - und/oder Chipkarten
US8704633B2 (en) * 2011-05-03 2014-04-22 Ncr Corporation Fraud prevention
DE102011052832A1 (de) * 2011-08-19 2013-02-21 Wincor Nixdorf International Gmbh Anti-Skimming-Modul mit minimiertem globalem Störfeld
BG66444B1 (bg) * 2012-04-03 2014-08-29 "СънБрайт Системс България" ООД Метод и сензорно устройство за откриване на устройства за кражба на информация от атм устройства
GB2517983B (en) 2013-09-09 2016-03-16 Ibm Security apparatus for an automated teller machine
US11695448B2 (en) 2014-07-31 2023-07-04 Gilbarco Inc. Fuel dispenser anti-skimming input device
CN104574659B (zh) * 2014-12-15 2018-04-03 深圳怡化电脑股份有限公司 应用于atm机的防盗告警装置
CN105929276B (zh) * 2016-05-09 2019-01-01 广州广电运通金融电子股份有限公司 一种防侧录电磁干扰的检测方法及设备
GB2552026B (en) 2016-07-08 2020-06-10 Ibm Shutter assembly for an automated teller machine
JP6900771B2 (ja) * 2017-05-09 2021-07-07 オムロン株式会社 近接センサおよび方法
US10249150B1 (en) 2017-10-03 2019-04-02 International Business Machines Corporation Security apparatus for an automated teller machine
US10109160B1 (en) 2017-10-03 2018-10-23 International Business Machines Corporation Shutter assembly for an automated teller machine
US11263875B2 (en) * 2018-02-23 2022-03-01 Madic Italia S.p.a. Method for detecting the presence of a smart card cloning device in an automatic payment and/or withdrawal terminal and respective automatic payment and/or withdrawal terminal
CN111681375B (zh) * 2020-05-14 2022-05-31 深圳怡化电脑股份有限公司 插卡检测装置、读卡控制方法、介质及终端

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Also Published As

Publication number Publication date
CN101263536B (zh) 2011-07-06
CN101263536A (zh) 2008-09-10
US20090242634A1 (en) 2009-10-01
US7780083B2 (en) 2010-08-24
WO2007048648A1 (fr) 2007-05-03

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