WO2012006721A1 - Système de sécurité de terminal de point de vente - Google Patents

Système de sécurité de terminal de point de vente Download PDF

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Publication number
WO2012006721A1
WO2012006721A1 PCT/CA2011/000805 CA2011000805W WO2012006721A1 WO 2012006721 A1 WO2012006721 A1 WO 2012006721A1 CA 2011000805 W CA2011000805 W CA 2011000805W WO 2012006721 A1 WO2012006721 A1 WO 2012006721A1
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WO
WIPO (PCT)
Prior art keywords
module
sensor
fastener
alarm
article
Prior art date
Application number
PCT/CA2011/000805
Other languages
English (en)
Inventor
Joel Ferguson
Original Assignee
Joel Ferguson
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 Joel Ferguson filed Critical Joel Ferguson
Publication of WO2012006721A1 publication Critical patent/WO2012006721A1/fr

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Classifications

    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07F—COIN-FREED OR LIKE APPARATUS
    • G07F7/00—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus
    • G07F7/08—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means
    • G07F7/10—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means together with a coded signal, e.g. in the form of personal identification information, like personal identification number [PIN] or biometric data
    • G07F7/1025—Identification of user by a PIN code
    • G07F7/1033—Details of the PIN pad
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07G—REGISTERING THE RECEIPT OF CASH, VALUABLES, OR TOKENS
    • G07G1/00—Cash registers
    • G07G1/0018—Constructional details, e.g. of drawer, printing means, input means
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07G—REGISTERING THE RECEIPT OF CASH, VALUABLES, OR TOKENS
    • G07G3/00—Alarm indicators, e.g. bells
    • G07G3/003—Anti-theft control

Definitions

  • This invention relates to security systems for protecting high risk equipment from tampering and removal. More specifically a monitoring system is provided which will alarm if the equipment is disconnected physically or electrically from its installed position.
  • the point-of-sale terminals including: credit card readers, Interact card readers and other units, which require an interaction between the payment cards and the pin codes entered by the user has been the center of attention for quite a while in relation to security breaches. Many identity theft cases started from compromising those point-of-sale terminals. The growing concern of those point-of-sale terminals was not the theft of the units, but the units swapping while regular units were replaced with altered units capable of recording personal information such as credit card numbers and interact pins.
  • the POSiTROL/Paymate System has similar anti-theft features, but also has features that make employee theft almost impossible. Even senior employees with the key and security code will need to contact the organizations monitoring company or risk setting off the alarm or the notification.
  • a security system which has the following features: within the system an alarm will sound if the unit being protected by the system is removed from its installed position, such as for example a support for a point-of-sale terminal such as a pin pad.
  • a point-of-sale terminal such as a pin pad.
  • any contact with the monitoring system namely a pressure contact, will be disengaged so as to cut the pressure on the contacts which will be sensed in the monitoring circuit for the system and the alarm will sound.
  • the contact is specially designed from cooperative parts made of spring steel which will only close a circuit under pressure, for example when rotating a fastener in a predetermined direction.
  • the contact will release the pressure as the fastener is removed or loosened.
  • Another condition which will activate an alarm is when the monitoring unit is removed from its mounting position such as a mounting post or mounting bracket for carrying the unit being secured.
  • a further condition wherein alarm would sound would be if the power was cut or in the power wires of the system were cut. When the power therefore is cut the buzzer will rely on battery operation. Further if the lines to the sensors are cut or short circuited, the alarm will still sound.
  • the alarm can be shut off in order to deactivate a buzzer or enunciator in the system but the alarm condition will still be transferred to the remote security monitoring system even if the buzzer or enunciator in the system is deactivated. Deactivation of the alarm sound will not stop the alarm signal for the above mentioned alarm conditions.
  • the present invention has provided a layered security system for monitoring a unit or device at risk from tampering or removal for example in such an instance when the thief is attempting to steal credit card information or swap/replace the point-of-sale terminal as described in the background of the invention.
  • a security module which monitors positioning of a point-of-sale terminal which is online and being used day-to-day.
  • An example of such a terminal would be a pin pad which is used by consumers to pay for purchases. It is well known when paying for a purchase using a pin pad the consumer swipes his or her debit or credit card, enters a pin number and request authorization of the transaction. The thief may attempt to swap the pin pad for a second pin pad designed to pick up and store credit card and ⁇ information. As described in the background of the invention this is a serious breach of security.
  • the present invention provides a monitoring security system which is reliable, robust and which monitors the power and the mounting of both the security module and the pin pad, all of which if tampered with will cause an alarm.
  • the security module is conveniently housed in a compact molded housing as described in the detailed description of the preferred embodiments.
  • Each module will be connected by standard wires, such as telephone wire, with an RJ 1 1 jack to a hub to power the modules and to feed information back to the alarm panel or central alarm monitoring system.
  • the hub provides the power required to the monitoring system module, the hub can supply several modules when multiple modules are present to monitor multiple pin pads. The number of pin pads therefore being monitored as in the case of large superstores would require many hubs or use of large hubs.
  • Each module would include circuitry that takes advantage of the required functionality by providing electrical components rather than electronic components. The electrical components are more reliable and are not subject to interference from EMF, magnetism or the like. Conveniently the module includes a number of relay switches which are set to either a normally open position or a normally closed position but all the relays are not set to the same condition.
  • a security module for monitoring the status of an article subject to tampering such as a point-of-sale terminal or pin pad, said module comprising:
  • the electrical circuitry board comprising a set of relays which is in communication with:
  • security module for connection to a security hub and monitoring a secure condition of an article subject to tampering
  • the module comprising integral/external fastener pressure sensors and a module fastener pressure sensor, said module including a set of monitoring relays which monitor the secure condition for the article being monitored, the integral/external fastener pressure sensor being tightened when attaching the article to its support, and the module fastener pressure sensor being tightened when attaching the module to its support, wherein an alarm signal is generated in any of the following conditions occur:
  • the security module may further comprise a sound circuit comprising a battery, an enunciator and an off/on switch, the sound circuit being controlled by a separate relay.
  • the separate relay sends an initiating signal to the sound circuit and the enunciator generates an alerting sound.
  • the security module may further comprise at least two external pressure sensors, in addition to a module pressure sensor linked to a set of visual indicators indicating the status of the sensors.
  • the security module has a LED indicator for each sensor, wherein the indicator switches from an alarm indication to a secured indication immediately with closing the sensor circuit with the fastener. While the alarm indication can be a red light and secured indication can be a green light.
  • the security module can be incorporated directly into the pin pad or point of sale terminal subject to protection.
  • pressure sensor has a casing enclosing two resilient electrodes separated by an insulator. The electrodes are contacting as a result of tightening the fastener passing through said pressure sensor and separated when said fastener is loosened.
  • the casing of the sensor is further comprising a step, engaging one of the electrodes and also preventing an over tightening of the sensor by the fastener.
  • the electrodes are having a ring part with an aperture for a fastener, while the insulator has a half ring part to separate the front part of the electrode rings and to allow the motion of the rear part of the electrode rings.
  • the motion of the rear part of the electrode ring is caused by the tightening of the fastener.
  • the electrodes are made of tin-coated spring steel.
  • the bottom part of the sensor casing is having a first step to engage the rear part of the bottom electrode ring and a second step to support the front part of the bottom electrode ring.
  • a central part of the bottom electrode is pressed downwardly between said steps and as a result the peripheral part of the bottom electrode is flexed upwardly closing the contact with the upper electrode at the rear part of the sensor.
  • a method of securing an article comprising a step of fastening an article to its support, while the fastener is passing through the pressure sensor described above; tightening and activating the circuit of the security system.
  • the alarm would sound and alarm signal would be sent to the central monitoring system in the event of tampering with the article or removal of the article from its location.
  • Figure 1 is a schematic view of the security module of the present invention mounted on a mounting post for a pin pad shown in a preferred embodiment of the invention.
  • FIG 2 is a schematic view of the security module of Figure 1 shown in more detail is engaged with a hub illustrated in one embodiment of the invention.
  • Figure 3 is a schematic view of an overall embodiment of the invention including a hollow engaged with a central alarm and the module itself.
  • Figure 4 is a schematic logic diagram illustrating the circuitry of the security module of Figures 1 and 2 and illustrated in a preferred embodiment of the invention.
  • Figure 5 illustrates a circuit drawing for the module in one embodiment of the invention.
  • Figures 6a, 6b is a schematic side view of the pressure sensor with and without fastener.
  • Figures 7 to 1 1 illustrate the structure of the pressure sensors 10 a, b, c.
  • Figure 12 illustrates the exploded view of the internal pressure sensor.
  • Figure 13 illustrates the exploded view of the external pressure sensor.
  • a security module is provided to protect the mounting screws and the power circuit for a point-of-sale terminal such as pin pads.
  • the monitoring module 10 as best seen in Figures 1 and 2 is connected via contacts 10a and 10b to the underside of the mounting bracket 4 which houses a pin pad 1.
  • the pin pad 1 will have fastener receiving holes on its underside which align with the contact positions disposed at 10a and 10b. In those particular mounting positions fasteners which will be monitored by contacts leading to the module 10 will be attached.
  • Each module 10 is mounted on the post or other stand 5 for a pin pad but also can me mounted inside the post or below the support unit hidden from the eyes of customers.
  • the stand 5 further includes portions 2, 3 and 4 for securing the pin pad and blocking the vision of the pin pad from the third parties while typing the pin code.
  • the security module 10 includes a casing 1 1 composed of two outer parts carrying the circuit board seen in Figures 5 and 6. The casing 1 1 is mounted to the post via a port 10c through the module casings 1 1. A convenient key switch 12 is provided in the housing 1 1 to deactivate a buzzer which will be described hereinafter.
  • FIG. 2 there is illustrated a single security module 10 engaged with the powering hub H at any one of the receiving sockets Jl .
  • jacks Jl are of type RJ 1 1 while the charge travel through the typical telephone wire 17 which engages each module 10 with the hub H.
  • the hub which further engaged with a power supply and also with the alarm system as shown in the Figure 2.
  • Four security modules may be used with the configuration in Figure 2. However, the hub can be easily extended to support more units. Should a single security module be required the smaller hub will be sufficient. An enunciator for an alarm, which might be a buzzer, will be sounded through the opening S as seen in the module 10 which will be described hereinafter.
  • the unit might further comprise a set of LED indicators 13 a, b, c to monitor the status of sensors 10 a, b, c and LED 14 to indicate the status of the system and communication with the hub.
  • the number of LED indicators as well as the number of sensors may vary according to the design requirements.
  • relays 21, 22, 23 are provided. Each relay include normally open and normally closed ports and further can be altered prior to implementing inside the module.
  • the module also includes a fourth relay switch 24 which is normally closed so that if the power is cut a battery backup 26 is provided for an enunciator 27.
  • Said enunciator 27 may be a buzzer, bell, alarm or any other audible or visual signaling device; it further may be turned off by the key switch 25.
  • Each of the electrical circuits includes an LED 13a, b, c, 14 to show that the circuit is active when it goes from a powered red to a ready green condition.
  • the ready condition is set by the tightening of the screws to the external contacts 10a, 10b, and internal contact 10c. Any interference or tampering with the system will cause an alarm both in the module and in the monitoring service.
  • One skilled in the art would be clearly familiar with components making up the schematic of Figure 3. However it is the combination of the use of relays and the logic of alternating normally open and normally closed positions which may be instituted with the system that makes it unique. This logic effectively is highly reliable.
  • FIG. 4 schematically illustrates a logic flow of the system.
  • a central alarm panel 30 is connected to a hub H through link 31 while hub H is connected through the standard RJ 1 1 port and link 35 to a module 1 shown in Figures 2 and 3. It is apparent from the Figure 4 that additional modules 2, 3 and so on, can be further attached to the hub H.
  • the Central Alarm panel can be attached to several hubs connected to several modules.
  • Central Alarm Panel can be a local monitoring system, remote monitoring system or any other type of system receiving the signal that secured device was tempered and transferring this information to an enforcement or technical team.
  • FIG. 5 illustrates a schematic arrangement of electrical connections of the security module.
  • the details of those figures would be readily understood by one skilled in the art. Further many variations can be made to the way of electrical connection of the parts of the module. Therefore, figures are provided for illustrative purpose only and not in a limiting sense.
  • FIGs 7 to 10 illustrate the preferred embodiments of the external sensor for the module.
  • the sensor 10a comprises a bottom part 40 a top part 41 and an orifice 42 receiving the screw or fastener. Internally the sensor has two resilient electrodes 46 and 47 separated by an insulator 45.
  • the part of the ring close to the strip is considered to be a front of the ring and the part of the ring located away from the strip can be considered as a back of the ring. In the preferred embodiment the back of the ring is bendable and the front is immobilized by the insulator 45.
  • the bottom part 40 of the sensor 10a comprises an electrode receiving head 40a and a wire receiving tail 43 the head 40a further comprises a step 44 to support the bottom electrode 46.
  • Figure 7a is an isometric view
  • 7b is top view
  • 7c is a cut side view of the bottom part of the electrode casing.
  • Tail 43 also comprises a step 43a, this step support the strip part of both electrodes and also step 41c of the top sensor part 41.
  • Insulator 45 illustrated in Figure 9 has a central tube 45a and generally semicircle support 45c. Said support can have separate indents, cuts or like for receiving the strips of the electrodes. In the assembled state, the strip of the bottom electrode is physically separated from the strip of the top electrode by the insulator. Further the support 45c of the insulator keeps rings of the electrodes apart, however as can be seen in Figure 9b the support is substantially semicircular, therefore leaving some freedom of movement to the electrodes at the insulator contact side opposite to the support side.
  • Figure 9c illustrates the side view of the insulator and specifically the extent of the support 45c relatively to the tube 45a.
  • the insulator may be made of any nonconductive material preferably plastic. The insulator is capable of vertical movement inside the head 40a as a result of a pressure provided by the fastener.
  • Figure 6a illustrates an external pressure sensor while the contacts 47 and 46 are separated and the circuit is open. While Figure 6b illustrates the sensor attached with a Fastener F. In Figure 6b the circuit is closed since the electrodes 47 and 46 are contacting with their respective parts 47a and 46a.
  • the top part 41 of the sensor is an elastic part in which the head part 41a can be slightly bent under pressure relatively to the tail part 41b proximate the step 41c. Since the part 41 is elastic, when the pressure is removed, this part returns to its normal straight form.
  • the head 41 a is vertically movable in the head part 40a as a result of tightening of the fastener. Therefore the contact between the electrodes ring parts 46a and 47a occurs by bending the top part 41 of the sensor pressed by the screw inwardly and therefore the electrodes are pressed between the step 44 and the ring 41a to close to contact. The closure of the contact powers the electrical circuit and activate the security device.
  • the step 44 has an important role in the sensor: first, it assists in pressing the electrode rings together and second it prevents over tightening of the screw/fastener. Over tightening might cause irreparable deformation of the electrodes which would prevent its separation following the release of fastener tension. The step 44 prevents this deformation from occurring.
  • the top and the bottom parts of the pressure sensors can be made of a plastic/polymer material, preferably polycarbonate in order to prevent deformation or cracking under load.
  • the material has to remain resilient and to release the contact while the pressure of the screw or fastener is eased.
  • the electrodes are made of spring steel or other resilient conductive material which should not deform under load.
  • the electrodes should not crimp or otherwise deform under load and have to retain the elasticity for an extended period of time.
  • the elasticity of the electrodes is essential for breaking the circuit in an event of tampering with the sensors or the fasteners of the sensors.
  • the electrodes are made of tin plated spring steel. Steel electrodes can be heat treated or chemically treated to reach required level of elasticity.
  • the thickness of electrodes is about 0.6 mm.
  • Figure 1 1a illustrates the top view of two electrodes.
  • 1 lb and 1 lc illustrate two electrodes separately and l id illustrates one of the electrodes formed to fit the internal sensor circuitry.
  • the electrodes 48 and 49 are separated by an insulator 45 and inserted into the receiving the part 50 of the module 10.
  • Figure 12a illustrates the exploded view of the assembly of the internal pressure sensor.
  • Figure 12c illustrates a side see through a view of the step 54
  • Figure 12d illustrates the top part of the column 50
  • the Figure 12b illustrates the bottom part of the column 50.
  • the part 50 also comprises a step 54 inside its premises. Therefore, after the tightening of the module to post, the screw will press the electrodes from one side and the step from the other side thus closing the circuit of the internal contact sensor. Removal of the screw will release the contact between the electrodes and sets off the alarm.
  • the bottom electrode 46 is one to flex upwardly between the steps 44 and 43a to contact the top electrode 47. While fastener F presses the top part 41 along with the insulator 45 downwardly, insulator presses the bottom electrode ring 46a down into the void between the two steps, as a result, the ring of the bottom electrode is flexed upwardly. Since there is only one area between the electrodes not occupied by the insulator, the electrodes would be contacting in this area. This arrangement eliminates the point load on the metal parts thus there is no possibility to deform any of the electrodes. Therefore, the contact would be released any time the fastener pressure is lessened or eliminated.
  • LED indicators 13 a, b, c has three indications OFF, RED and GREEN. Then there is no light emitted there is an indication that there is no power supplied to the system or that the LED is broken. When the system is powered but circuit is not closed, the LED emits RED light. Therefore, the RED light means that the system is not protected by a specific sensor. As soon as the sensor is fastened to the pin pad or other device to be secured, the LED turns GREEN. This feature is very useful for the installation of the security system. Since the installer receives an immediate indication when the circuit is closed and working. This way the installer knows when he can stop fastening the device to prevent over tightening.
  • the unit 10 has the following parts:
  • the alarm and sensor module 10 comprises a case 1 1 made of plastic, metal, poly carbonate or the like, a printed circuit board, one or more sensors 10 a, stand-by battery 26 and alarm speaker 27.
  • the module can be secured to a counter, wall, product mounts 5 or the like alternatively, module can be attached to a product with a cam lock or security screw.
  • Typical module configuration will have three sensors. Two 10a, 10b will engage the product to be secured and an additional internal sensor 10c to secure the module with mounting screw or cam lock.
  • the printed circuit board has two independent, but interconnected electrical circuits.
  • the main 5 volt circuit receives the power from the system hub or a power adaptor if it is used as a stand-alone unit. This 5 volt current supplies all relays, sensors and LED lights. When the circuit is interrupted the control relay triggers the alarm circuit which is powered by the stand-by 12 volt battery. Since the internal battery is not used to check the alarm status, the stand-by life of the battery increases to over five years.
  • Each sensor has a corresponding LED light 13 a, b, c.
  • the LED glows red to indicate there is power to the sensor, or that it is in the alarm state. Once the sensor has the required pressure applied by the devise screw the LED turns green to indicate that it is in the ready state.
  • the mounting base allows for secure fastening while still allows quick removal of the module for maintenance or upgrading.
  • the base can be mechanically fastened or fastened using two-sided tape.
  • System hub can connect two or more modules into a single zone for the central alarm.
  • the hub is seen as one zone on the central alarm system and key pad allowing multiple programming options.
  • the central alarm key pad can be programmed that only the system administrator can turn off the POS system and only by letting the monitoring station know that the system is about to be turned off. This enables the staff to turn off exit and motion detectors, but not be able to circumvent the POS security system.
  • the POS system can remain on 24 hours a day and there will always be an outside check to make single employee theft virtually impossible.
  • the unit might have an uninterrupted power supply.
  • a security module for monitoring the status of an article subject to tampering such as a point of sale terminal or pin pad
  • said module comprising: a casing (1 1); an electrical circuitry board disposed within said casing; at least one internal or external sensor (10a)/(10c) selected from pressure sensors, current sensors, contact sensors, or the like which sense the presence of the article and alarm if the article is tampering with or removed, the electrical circuitry board comprising a set of relays which is in communication with; (i) a central security unit (30), (ii) at least one sensor (10a) in a closed monitoring loop of the module wherein an alarm will be generated if any of the communications is disrupted or are tampered with.
  • the security module for connecting to a security hub and monitoring a secure condition of an article subject to tampering, the module comprising integral fastener pressure sensors and a module fastener pressure sensor, said module including a set of monitoring relays which monitor the secure condition for the article being monitored, the integral fastener pressure sensor being tightened when attaching the article to its support, and the module fastener pressure sensor being tightened when attaching the module to its support, wherein an alarm signal is generated in any of the following conditions:
  • the security module further comprising a sound circuit see Figure 3, comprising a battery (26), and an enunciator (27) and an off/on switch (25), the sound circuit being controlled by a separate relay (24), wherein in the alarm conditions this separate relay sends an initiating signal to the sound circuit and the enunciator generates an alerting sound.
  • a sound circuit see Figure 3, comprising a battery (26), and an enunciator (27) and an off/on switch (25), the sound circuit being controlled by a separate relay (24), wherein in the alarm conditions this separate relay sends an initiating signal to the sound circuit and the enunciator generates an alerting sound.
  • the security module further comprising at least two integral pressure sensors (10a, 10b), in addition to a module pressure sensor (10c) linked to a set of visual indicators (13 a, b, c, 14) indicating the status of the sensors.
  • the security module further comprising a set of relays (21, 22, 23) in normally open position one relay per sensor and one relay in normally closed position (24) for sound circuit.
  • the relays can be replaced by another electrical circuitry known in the art. How the system works referring to Figure 4
  • the HUB has two main functions:
  • each relay can be independently powered, but still acts as a switch in series. Allowing one or more breaks in the switching circuit to activate the central alarm controller. It also allows for the LED to indicate if power is going to the module port (RED); if module is in the ready state (GREEN) or if it is in the alarm state (RED). This logic is used in the module relays as well.
  • Each module has a corresponding control relay inside the HUB (item 33).
  • the corresponding relays inside the HUB are in series so that each module is seen as independent, but they are really just extended series of relays and switches.
  • the positive side of the power 35 that controls the HUB's relays travels through every relay and sensor in the module and then returns to the corresponding relay. This logic allows for an infinite number of modules to be connected to a single HUB 36.
  • magnets or EMFs can damage the electronics and/or the software preventing the change in status signal to the alarm panel controller from activating the central alarm.
  • reaction time of the entire system is virtually instant with no lag time from a CPU.
  • the pin pad would incorporate parts of the circuits illustrated in figure 3. It will comprise an internal contact, a relay and data link. Also it might include LED indicator, sound alarm and switch. The internal contact would be activated during an attachment of the pin-pad to its base. And any tampering with the device such as disconnection, loosening of the screw, shortcutting the cable and other will set off the alarm and also send a signal to the central alarm panel.
  • the security device can be integrated into the post 5 supporting the device while the sensors can be internal or external to the post.
  • the current invention has more utilities besides the protection of the pin pad devices. It also can be used for protection of devices at point of sale such as electronics, computers and hand held devices which can be tightened to a post or other type of support. Pressure activated sensors can also be used in securing doors, windows and other entities capable of creating pressure.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)

Abstract

L'invention porte sur un module de sécurité pour la surveillance de l'état d'un article soumis à une altération, tel qu'un terminal ou un clavier d'identification personnel de point de vente, ledit module comprenant : un boîtier ; une carte de circuits imprimés disposée à l'intérieur dudit boîtier ; au moins un capteur sélectionné à partir de capteurs de pression, de capteurs de courant, de capteurs de contact, ou analogues qui détectent la présence de l'article et émettent une alarme si l'article est altéré ou enlevé, la carte de circuits imprimés comprenant un ensemble de relais qui sont en communication avec : (i) une unité de sécurité centrale, (ii) au moins un capteur dans une boucle de surveillance fermée du module, une alarme étant générée si l'une quelconque des communications est interrogée ou est altérée.
PCT/CA2011/000805 2010-07-16 2011-07-15 Système de sécurité de terminal de point de vente WO2012006721A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US36508010P 2010-07-16 2010-07-16
US61/365,080 2010-07-16

Publications (1)

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WO2012006721A1 true WO2012006721A1 (fr) 2012-01-19

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007096311A1 (fr) * 2006-02-23 2007-08-30 The European Community, Represented By The European Commission Dispositif d'etancheite et procede d'etancheite
US7710286B1 (en) * 2007-03-30 2010-05-04 Maxim Integrated Products, Inc. Intrusion detection using a conductive material
US20110121967A1 (en) * 2006-04-21 2011-05-26 Honeywell International Inc. Tamper-proof security system component

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007096311A1 (fr) * 2006-02-23 2007-08-30 The European Community, Represented By The European Commission Dispositif d'etancheite et procede d'etancheite
US20110121967A1 (en) * 2006-04-21 2011-05-26 Honeywell International Inc. Tamper-proof security system component
US7710286B1 (en) * 2007-03-30 2010-05-04 Maxim Integrated Products, Inc. Intrusion detection using a conductive material

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