Communication detector for unauthorized devices

Abstract

To provide a communication detector for an unauthorized person's terminal, which eliminates the need to change a threshold stored in a storage device for determining whether communication is performed between the unauthorized person's terminal and a wearable terminal; allows cost reduction; and is easy to manage.SOLUTION: A portable detector 12, which is an example of a communication detector for an unauthorized person's terminal configured to detect the presence or absence of communication with an examinee's terminal 16, includes: an auxiliary storage device 51 provided in a main body 63 and storing a program and a threshold; a control circuit 50 provided in the main body 63 and reading the program to execute processing; and an alert generator 55 provided in the main body 63. The control circuit 50 executes: first processing of comparing radio field intensities between the examinee's terminal 16 and wearable terminals 17 and 18 with the threshold to determine whether or not communication between the examinee's terminal 16 and the wearable terminals 17 and 18 has been performed; and second processing of generating an alert by the alert generator 55 in response to determining that communication between the examinee's terminal 16 and the wearable terminals 17 and 18 has been performed.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a communication detector for an unauthorized terminal that detects whether communication is being performed on an unauthorized terminal within a specific area.

Background Art

[0002] An example of a communication detection system for an unauthorized terminal that detects communication of an unauthorized terminal performed within a specific area is described in Patent Document 1. The communication detection system described in Patent Document 1 includes a plurality of radio wave detection devices (communication detectors) and electronic devices. The plurality of radio wave detection devices are installed within a specific area where wireless communication using a first communication method is prohibited or restricted. Each radio wave detection device includes a detection unit that detects radio waves by wireless communication using the first communication method, a transmission unit that transmits a report signal including device identification information for uniquely identifying the radio wave detection device and the detection result of the detection unit by a second communication method, and a threshold setting unit that sets a threshold value. Further, the detection unit includes a reception unit that receives radio waves by wireless communication using the first communication method, and a determination unit that determines that wireless communication using the first communication method is being performed if the signal strength based on the radio waves received by the reception unit is equal to or greater than the threshold value.

[0003] Each radio wave detection device is disposed at both ends of a desk for examinees in an examination hall. The desks for examinees are arranged in a matrix in the examination hall. The electronic device is disposed on a desk for examiners in the examination hall. Wireless communication is possible between the electronic device and the radio wave detection device. When the radio wave detection device determines that a examinee is performing wireless communication with the outside by a first communication method, that is, a cellular method, using a portable terminal (unauthorized terminal), it transmits a report signal including the determination result to the electronic device.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

[0005] The inventors of this application recognized the following problems with the communication detection system described in Patent Document 1: the strength of incoming radio waves (downlink radio waves) received by the unauthorized terminal from an external base station fluctuates depending on the distance between the unauthorized terminal and the base station, and the determination unit that detects uplink radio waves emitted from the unauthorized terminal needs to change the threshold used for determination according to the strength of the uplink radio waves; the need to install a radio wave detection device on each desk, which increases costs; and the need to set thresholds for all radio wave detection devices, which makes management cumbersome.

[0006] The objective of this embodiment is to provide a communication detector for malicious terminals that does not require changing thresholds stored in a storage device to determine whether communication is taking place between the malicious terminal and the wearable terminal, reduces costs, and is easy to manage. [Means for solving the problem]

[0007] This embodiment is a communication detector that detects whether or not there is communication from a fraudulent terminal possessed by a fraudulent person within a specific area, comprising a main unit carried by a monitor moving within the specific area to monitor the fraudulent person, and a device provided in the main unit that stores a program, and Between the wearable device worn on the body of the fraudster and the fraudster's device Was the communication made? This can be determined by comparing the communication strength and the threshold. For making a decision The aforementioned threshold A storage device in which the program is stored, and a control circuit provided in the main body that reads the program stored in the storage device and executes processing. and, The control circuit is connected to the unauthorized terminal. The wearable terminal Was communication made between them? This is determined by comparing the communication strength and the threshold value. The first step is to make a decision, Based on the judgment result of the first process, the location of the intruder within the specific area is detected based on the communication strength, the movement of the observer, and the reception results at multiple locations. The document discloses a communication detector for malicious terminals that performs the second process. [Effects of the Invention]

[0008] In this embodiment, since the communication strength is constant between the malicious terminal and the wearable terminal, the communication detector for the malicious terminal does not need to change the threshold value stored in the memory to determine whether communication is taking place between the malicious terminal and the wearable terminal. Furthermore, the number of communication detectors for the malicious terminal can be reduced, thus reducing costs. Finally, the management of the communication detectors is simplified because the threshold values ​​stored in the memory of numerous communication detectors do not need to be changed. [Brief explanation of the drawing]

[0009] [Figure 1] This block diagram shows an example of a communication detector, communication detection computer, and communication detection system for unauthorized terminals. [Figure 2] This is a schematic floor plan showing an example of an examination venue in a specific area. [Figure 3] This is a flowchart showing an example of a communication management method performed by a communication detection system. [Modes for carrying out the invention]

[0010] (background) Technologies for detecting the communication status of mobile phone terminals were disclosed in publications such as Japanese Patent Publication No. 2010-68461, Japanese Patent Publication No. 2010-109913, and Japanese Patent Publication No. 2011-24131. These documents describe a mobile phone sensor that, when it detects radio waves emitted from a mobile phone terminal, emits a warning announcement from a built-in speaker, around the time when remittance fraud became a social problem. In particular, refund fraud was caused by victims being guided by their mobile phones to a nearby ATM (Automatic Teller Machine) area and then being guided to perform a transfer operation. The system was designed to detect the uplink channel radio waves of a mobile phone installed on the wall and emit an alert if someone was talking on their mobile phone in the ATM area.

[0011] However, the strength and compatibility of the uplink channel signal emitted from a mobile phone terminal vary depending on the downlink signal environment of the mobile phone base station. For example, if the incoming signal from the base station is weak, the uplink channel signal strength will be strong, and conversely, if the incoming signal from the base station is strong, the uplink channel signal strength will be weak. Therefore, in order to continue this function, it is necessary to change the optimal threshold for each ATM corner in response to changes in the incoming signal environment from surrounding base stations. If the threshold is not changed in response to changes in signal strength, the system will also detect signals from mobile phones used by passersby outside the ATM corner, resulting in a continuous stream of warning announcements and a lack of effectiveness. The communication detector disclosed in this disclosure provides technology to address these challenges.

[0012] (Summary of this matter) In this embodiment, an example of a communication detector, a communication detection computer, and a communication detection system for a fraudulent terminal is described with reference to the drawings. As shown in Figure 1, the communication detection system 10 is a fraudulent communication detection system that detects whether or not short-range wireless communication has taken place between a fraudulent terminal and a wearable terminal. The communication detection system 10 comprises a communication detection computer 11 and a portable detector 12, which is an example of a communication detector for a fraudulent terminal. Two-way communication is possible between the communication detection computer 11 and the portable detector 12. Multiple monitors 14 can move within a specific area, for example, within the examination venue 13 shown in Figure 2. Each of the multiple monitors 14 carries a portable detector 12. The communication detection system 10 is a system that detects whether or not short-range wireless communication, for example, radio wave communication, has taken place between the examinee terminal (fraudulent terminal) 16 held by the examinee 15 and the wearable terminals 17 and 18. The short-range wireless communication strength between the examinee terminal 16 and the wearable terminals 17 and 18 is approximately constant. Therefore, in order to determine whether or not short-range wireless communication has taken place between the examinee terminal 16 and the wearable terminals 17 and 18, it is not necessary to change the threshold values ​​stored in the memory of the portable detector 12.

[0013] (Exam venue) Figure 2 is a plan view showing an example of an examination venue 13. The examination venue 13 is located inside a building. The examination venue 13 is a space partitioned by a first side wall 21, a second side wall 22, a third side wall 23, and a fourth side wall 24. Figure 2 shows an example where the first side wall 21 and the third side wall 23 are arranged parallel to each other, and the second side wall 22 and the fourth side wall 24 are arranged parallel to each other. When the examination venue 13 is viewed from directly above, it is rectangular, for example, a square. Multiple rows of tables A1, A2, A3, A4, A5, and A6 are arranged between the second side wall 22 and the fourth side wall 24 in the examination venue 13. Each of the table rows A1, A2, A3, A4, A5, and A6 has multiple tables 25 that are spaced apart between the first side wall 21 and the third side wall 23.

[0014] Furthermore, a passage 26 is provided between each table column. The passages 26 are arranged along the second side wall 22 and the fourth side wall 24. In addition, a passage 27 is provided between the first side wall 21 and table columns A1, A2, A3, A4, A5, and A6. A passage 28 is provided between the second side wall 22 and table column A6. Furthermore, a passage 29 is provided between the third side wall 23 and table columns A1, A2, A3, A4, A5, and A6, and a passage 30 is provided between the fourth side wall 24 and table column A1.

[0015] Furthermore, repeaters 31, as shown in Figure 1, are installed at multiple different locations within the examination venue 13, for example, at the four corners of the examination venue 13. The repeaters 31 are repeaters for short-range wireless communication and include, for example, Wi-Fi® access points and beacons. Wi-Fi access points transmit and receive radio signals of the wireless LAN standard. Beacons transmit and receive radio signals of short-range wireless communication, for example, radio signals of the Bluetooth® standard.

[0016] (Applicants) Since examinee 15 is restricted from bringing electronic devices into the examination venue 13, it has been decided that the power of the electronic devices should be turned off and stored in the bag. The electronic devices held by examinee 15 include an examinee terminal 16, wearable terminals 17, 18, etc. The wearable terminals 17, 18 are communication devices that can perform short-range wireless communication with the examinee terminal 16. The wearable terminals 17, 18 may be either worn on the body of examinee 15 or placed on the table 25. The examinee terminal 16 includes a mobile phone, a smartphone, a tablet terminal, etc. The examinee terminal 16 is a computer having a control circuit, a display unit, an operation unit, a communication device, a storage device, etc.

[0017] The communication device can perform Wi-Fi communication with a repeater 31. The storage device stores non-temporary programs, non-temporary applications, various kinds of information and data read by the control circuit. The display unit is, for example, a display, and the display unit displays characters, videos, images, etc. The operation unit is operated by examinee 15. The control circuit performs various kinds of processing, judgment, control, etc. according to the non-temporary programs, non-temporary applications, various kinds of information and data stored in the storage device, the operation content of the operation unit, etc., and processes the display content of the display unit, the input signal and output signal of the communication device.

[0018] The wearable terminal 17 is an electronic device capable of communicating with each other with a repeater 31. The wearable terminal 17 includes, for example, a camera-equipped watch, a camera-equipped ring, a camera-equipped necklace, a camera-equipped pendant, a camera-equipped pen, etc. The wearable terminal 17 is controlled by the examinee terminal 16. And the wearable terminal 17 can convert the video captured by the camera into a radio wave signal and send it to the examinee terminal 16.

[0019] The wearable terminal 18 is an electronic device capable of communicating with the examinee terminal 16 without going through the repeater 31. The wearable terminal 18 is controlled by the examinee terminal 16. The wearable terminal 18 includes, for example, a voice earphone that outputs voice. The wearable terminals 17 and 18 are devices that can be worn on the body of the examinee 15. Also, the examinee terminal 16 can communicate with the cooperator terminal 33 via a base station 32 installed outside the examination venue 13. The cooperator terminal 33 is a computer operated by a cooperator outside the examination venue 13.

[0020] Therefore, the examinee 15 can photograph the examination questions with a camera included in the wearable terminal 17 and send the video to the cooperator terminal 33 via the base station 32. The cooperator can send the answers to the examination questions, such as video, images, text, voice, from the cooperator terminal 33 to the examinee terminal 16 via the base station 32. The examinee 15 can operate the examinee terminal 16 to perform improper acts such as visually checking the answers or listening to the voice of the answers with the earphone of the wearable terminal 18.

[0021] (Communication Detection Computer) The communication detection computer 11 is operated by the examination administrator. The communication detection computer 11 is a computer equipped with a control circuit 40, an auxiliary storage device 41, a communication device 42, an operation unit 43, etc. The communication detection computer 11 may be in any form such as a server, a workstation, a mainframe, a supercomputer, etc. Also, the communication detection computer 11 may be either a single-type computer or a distributed computer. The communication device 42 is a wireless communication device that receives and transmits radio waves, electricity, or light and performs two-way communication with the portable detector 12 via a network.

[0022] The auxiliary storage device 41 stores non-temporary applications, non-temporary programs, various information and data, etc. The various information and data include information about the examination venue 13 and examinee information. The information about the examination venue 13 includes a schematic diagram of the examination venue 13 viewed from directly above, the number of multiple table columns arranged in the examination venue 13, the position of each table column, the number of tables 25 included in each table column and the position of each table 25, and a table identification number assigned to each table 25, etc. Each table 25 has a different table identification number, and each table 25 can be identified by its table identification number.

[0023] Furthermore, the examinee information includes the examinee number and name of each examinee 15 seated in each table 25 corresponding to each table column. The examinee number is different for each examinee 15, allowing each examinee 15 to be identified. The examinee information of each examinee 15 is associated with the identification number assigned to each table 25. Therefore, even if multiple examinees 15 are seated in chairs corresponding to the same table 25, both the table 25 and the examinee 15 can be identified. The operation unit 43 is operated by the examination administrator. The examination administrator can operate the operation unit 43 to update, change, correct, etc., the information of the examination venue 13 and the examinee information.

[0024] The control circuit 40 includes an arithmetic processing circuit, main memory, input ports, output ports, etc. The control circuit 40 can communicate with the operation unit 43, the auxiliary storage device 41, and the communication device 42. The control circuit 40 reads non-temporary applications, non-temporary programs, etc. stored in the auxiliary storage device 41, performs various processes such as judgment, comparison, and control, and stores the results of various processes in the auxiliary storage device 41. Various information and data are stored in the auxiliary storage device 41.

[0025] The control circuit 40 comprises an information processing unit 44 and a repeater control unit 45 for performing various processes. The information processing unit 44 processes information from the examination venue 13, examinee information, information acquired from the portable detector 12, information sent to the portable detector 12, and so on.

[0026] (Portable detector) The portable detector 12 is designed to be small and light enough for each monitor 14 to carry and move around the examination venue 13, i.e., to walk around with. The portable detector 12 has a structure that allows it to be attached to and detached from a part of the monitor 14's body, such as a clothing pocket or belt. The portable detector 12 is a computer equipped with a main unit 63, a control circuit 50, an auxiliary storage device 51, a communication device 52, an operation unit 53, an antenna 54, an alert generator 55, a power supply 56, etc. The main unit 63 is a casing made of synthetic resin or metal, and the control circuit 50, auxiliary storage device 51, communication device 52, operation unit 53, antenna 54, alert generator 55, and power supply 56 are located in the main unit 63.

[0027] The communication device 52 is a wireless communication device that receives and transmits radio waves, electricity, or light, and performs one-way communication with the communication detection computer 11 via the repeater 31 or without going through the repeater 31. The auxiliary storage device 51 stores non-temporary applications, non-temporary programs, various information and data, etc. The various information and data stored in the auxiliary storage device 51 include information and data acquired from the communication detection computer 11, information and data detected by the portable detector 12, and information and data that are stored in advance without being acquired from the communication detection computer 11.

[0028] The control unit 53 is operated by the supervisor 14. When the supervisor 14 operates the control unit 53, they can set a threshold value to be stored in the auxiliary storage device 51. The threshold value is a reference value used to determine whether or not the portable detector 12 has received a radio wave signal. The portable detector 12 can also perform the process of storing the threshold value obtained from the communication detection computer 11 in the auxiliary storage device 51. The antenna 54 is connected to the control circuit 50 and can receive uplink and downlink radio wave signals between the examinee terminal 16 and the wearable terminals 17 and 18. The uplink radio wave signal is the radio wave signal sent from the wearable terminals 17 and 18 to the examinee terminal 16. The downlink radio wave signal is the radio wave signal sent from the examinee terminal 16 to the wearable terminals 17 and 18.

[0029] The control circuit 50 includes an arithmetic processing circuit, main memory, input ports, output ports, etc. The control circuit 50 can communicate with the operation unit 53, auxiliary storage device 51, alert generator 55, and communication device 52. The control circuit 50 reads and starts up non-temporary applications, non-temporary programs, etc. stored in the auxiliary storage device 51, and performs various processes, such as judgment, comparison, and control, based on thresholds stored in the auxiliary storage device 51, the operation content of the operation unit 53, radio signals received by the antenna 54, and information and data acquired from the communication detection computer 11, and stores the results of the various processes in the auxiliary storage device 51.

[0030] The control circuit 50 can detect the presence or absence of at least one of the radio signals: the radio signal transmitted from the examinee terminal 16 to the wearable terminals 17 and 18 (downlink), and the radio signal received by the examinee terminal 16 from the wearable terminals 17 and 18 (uplink). The control circuit 50 can also determine whether the strength of the detected actual radio signal exceeds a threshold stored in the auxiliary storage device 51. Furthermore, the control circuit 50 controls the alert generator 55. The control circuit 50 can continuously send information and data, including the processing, control, and judgment results, to the communication detection computer 11.

[0031] The control circuit 50 comprises an information processing unit 57, a radio signal processing unit 58, and an alert control unit 62 for performing various processes, controls, and decisions. The information processing unit 57 processes information about the examination venue 13 and examinee information. The radio signal processing unit 58 processes the radio signals received by the antenna 54. The alert control unit 62 generates an alert using the alert generator 55 when radio signal communication occurs between the examinee terminal 16 and the wearable terminals 17 and 18.

[0032] The alert generator 55 includes a display unit 59, a vibration motor 60, earphones 61, etc. The display unit includes a display, a light-emitting diode (LED) lamp, etc. The display can show information and data of the examination venue 13, commands obtained from the communication detection computer 11, etc. The vibration motor 60 is an electric motor that vibrates the main unit 63 when power is supplied. The earphones 61 are connected to the communication device 52 wirelessly or by wire. The earphones 61 are worn in the ears of the supervisor 14. The earphones 61 output sound corresponding to the signal output from the communication device 52. The earphones 61 may also be bone conduction earphones with a vibration function. The power supply 56 is a battery that supplies power to electronic components mounted on the main unit 63, such as the vibration motor 60, the display unit 59, etc. The battery is a rechargeable secondary battery.

[0033] (Communication detection method) The flowchart in Figure 3 shows an example of a communication detection method performed by the communication detection system 10. In step S10, the communication detection computer 11 sends various information, data, control signals, etc., to the portable detector 12. In step S10, the communication detection computer 11 sends, for example, information about the examination venue 13 and examinee information to the portable detector 12. In step S10, the communication detection computer 11 can also acquire and process various information, data, etc., from the portable detector 12. In step S10, the communication detection computer 11 acquires and processes the location information of each monitor 14 from each portable detector 12, and stores the location information of each monitor 14 in the auxiliary storage device 41. The communication detection computer 11 can perform the processing in step S10 at any time.

[0034] The location information for each supervisor 14 includes information identifying each supervisor 14 who possesses a portable detector 12 in the examination venue 13 shown in Figure 2, the current location of each supervisor 14, and the movement path of each supervisor 14. The information identifying each supervisor 14 includes the number of supervisors 14 present in the examination venue 13, an identification code for each supervisor 14, an identification code for the portable detector 12 each supervisor 14 possesses, etc. The current location of each supervisor 14 is the location where each supervisor 14 is located within the examination venue 13. The current location of each supervisor 14 includes, for example, which of the aisles 26 between table columns A1, A2, A3, A4, A5, A6 each supervisor 14 is in, which of the aisles 27, 28, 29, 30 each supervisor 14 is in, which of the tables 25 each supervisor 14 is between, etc. The movement path of each monitor 14 is determined from the movement history of each monitor 14's current location.

[0035] The movement path of the monitor 14 means which table columns the monitor 14 moved between, which pathways the monitor 14 moved along, and in what direction the monitor 14 moved. The direction of movement of the monitor 14 includes a first direction B1 in which the monitor 14 moves from the first side wall 21 to the third side wall 23, a second direction B2 in which the monitor 14 moves from the third side wall 23 to the first side wall 21, a third direction B3 in which the monitor 14 moves from the second side wall 22 to the fourth side wall 24, and a fourth direction B4 in which the monitor 14 moves from the fourth side wall 24 to the second side wall 22.

[0036] In step S20, supervisor 14 operates the portable detector 12 to set a threshold and stores the set threshold in the auxiliary storage device 51. The portable detector 12 also sends the threshold to the communication detection computer 11. The communication detection computer 11 stores the acquired threshold in the auxiliary storage device 41. The threshold is the radio wave strength of the wireless signal (dBm: decibels relative to a milliwatt) and is a reference value for determining whether or not communication is taking place between the examinee terminal 16 and the wearable terminals 17 and 18. For example, if the frequency of the radio signal is 2.4 GHz, the threshold can be set to "-65 dBm", and if the frequency of the radio signal is 5.0 GHz, the threshold can be set to "-60 dBm". After performing the operation in step S20, supervisor 14 moves around the examination venue, i.e., walks, while carrying the portable detector.

[0037] In step S21, the portable detector 12 acquires various information, data, control signals, etc. from the communication detection computer 11. In step S21, the portable detector 12 acquires, for example, information about the examination venue 13 and examinee information from the communication detection computer 11, processes it, and stores it in the auxiliary storage device 51. In step S21, the portable detector 12 sends various information, data, etc. to the communication detection computer 11. In step S21, for example, while the examination is being conducted, the portable detector 12 generates location information of the supervisor 14, stores the generated location information in the auxiliary storage device 51, and sends it to the communication detection computer 11. The portable detector 12 can continuously perform the processing in step S21.

[0038] The current location of the observer 14 can be determined, for example, based on the strength of the radio signals received by the portable detector 12 from multiple access points included in the repeater 31, the difference in the arrival time of the radio signals from each access point to the portable detector 12, etc. The current location of the observer 14 can also be determined based on the strength of the signals received by the portable detector 12 from multiple beacons included in the repeater 31, the difference in the arrival time of the signals from each beacon to the portable detector 12, etc.

[0039] In step S22, the portable detector 12 determines whether or not it has detected a radio wave signal. If the portable detector 12 determines "Yes" in step S22, in step S23, it outputs the fact that a radio wave signal has been detected and its location on the display unit 59. The detection of a radio wave signal is indicated, for example, by lighting up the light-emitting diode lamp included in the display unit 59.

[0040] Furthermore, in step S24, the portable detector 12 determines whether or not it has detected a radio signal when the observer 14 walks along at least one of the first direction B1 and second direction B2 in each of the passages 26 and 30 on either side of table 25, which is located in any one of the table rows, for example, table row A1, in the ○th position from the first side wall 21.

[0041] Here, it is not relevant whether the supervisor 14 who walked down the aisles 26 and 30 on either side of the designated table 25 is the same person or a different person. The portable detector 12 makes the decision in step S24 based on the movement history of the supervisor 14. The decision in step S24 allows the identification of a single table 25 where a test-taker 15 is communicating with the test-taker terminal 16. If the portable detector 12 determines Yes in step S24, in step S25 it determines whether the strength of the detected radio wave signal exceeds a threshold, that is, whether or not there is communication by the test-taker terminal 16. The threshold used for the decision in step S25 is the one set in step S20.

[0042] Furthermore, if the portable detector 12 determines "Yes" in step S22, it can proceed to step S25 without executing step S24. In addition, if the communication detection computer 11 obtains information that was determined to be "Yes" in step S22 from a portable detector 12 located in the aisle on one side of any table 25 in step S10, it can also send a command signal to other portable detectors 12 saying, "Please walk down the aisle on the opposite side of table 25." The monitor 14 who is holding the portable detector 12 that receives this command signal can then walk down the aisle on the opposite side of table 25 as instructed.

[0043] If the portable detector 12 determines "Yes" in step S25, that is, determines that communication has occurred on the examinee terminal 16, it generates an alert in step S26. The alert generated by the portable detector 12 may be any of the following: flashing of an LED lamp, illumination of an LED lamp, vibration of the main body of the portable detector 12 by the vibration motor 60, vibration of the bone conduction earphone included in the earphone 61, or audio output from the earphone 61. If the alert generated by the portable detector 12 is illumination or flashing of an LED lamp, the number of LED lamps to be illuminated may vary depending on the radio wave signal strength. For example, the number of LED lamps to be illuminated can be increased as the detected radio wave strength increases.

[0044] The supervisor 14 can identify one examinee 15 who communicated a radio signal using the examinee terminal 16 by bringing the portable detector 12 close to the examinee 15 sitting at the nearest table 25 from the current location where the alert generator 55 generated an alert, either on the examinee's body or in their bag. Once examinee 15 is identified, the portable detector 12 sends the information of the identified examinee 15, i.e., the fraudulent examinee information, to the communication detection computer 11, and proceeds to step S22. The fraudulent examinee information consists of the examinee number and name.

[0045] If the portable detector 12 determines No in step S22, or No in step S24, or No in step S25, that is, if it determines that no communication is taking place on the examinee terminal 16, it proceeds to step S22. In step S11, the communication detection computer 11 acquires and processes the fraudulent information from the portable detector 12 and stores it in the auxiliary storage device 41.

[0046] (Examples of application) Examples of applications of the communication detection method performed by the communication detection system 10 include the following. For example, the communication detection computer 11 can also make the decisions in steps S22, S24, and S25 of Figure 3. Specifically, if the portable detector 12 determines Yes in step S22, it sends information indicating that fact, as well as other information, from the portable detector 12 to the communication detection computer 11. Then, in step S10 of Figure 3, the control circuit 40 of the communication detection computer 11 obtains information from the portable detector 12 that "radio communication was performed on the examinee terminal 16."

[0047] Then, after step S10, the communication detection computer 11 makes decisions in steps S24 and S25. If the communication detection computer 11 determines "Yes" in step S25, it sends a control signal to the portable detector 12 again in step S10 to generate an alert. The portable detector 12 then executes the process in step S26. If multiple portable detectors 12 receive radio signals in the passages on both sides of the table 25, the communication detection computer 11 sends control signals to each of the multiple portable detectors 12 in step S26.

[0048] (Effects of the embodiment) The strength of the communication radio waves between the base station 32 and the examinee terminal 16, specifically the incoming radio waves (downlink), fluctuates due to environmental disturbances such as the distance between the base station 32 and the examinee terminal 16, the presence or absence of obstacles between the examinee terminal 16 and the base station 32, the number of obstacles, the density of obstacles, the height of obstacles, and weather. Therefore, if we were to compare the actual strength of the incoming radio waves received by the examinee terminal 16 from the base station 32 with a threshold value to determine whether or not there is communication between the examinee terminal 16 and the base station 32, the threshold value would have to be changed according to the environment, and the result of determining whether or not there is communication between the examinee terminal 16 and the base station 32 may also be inaccurate.

[0049] In contrast, the portable detector 12 of this embodiment compares the strength of the radio communication between the examinee terminal 16 and the wearable terminals 17 and 18 with a threshold value stored in the auxiliary storage device 51 to determine whether or not communication is taking place between the examinee terminal 16 and the wearable terminals 17 and 18. The examinee terminal 16 and the wearable terminals 17 and 18 are located within the same examination venue 13 and perform short-range communication. Therefore, the strength of the communication radio waves between the examinee terminal 16 and the wearable terminals 17 and 18 is approximately constant. Consequently, it is not necessary to change the threshold value stored in the auxiliary storage device 51 of the portable detector 12 that detects the presence or absence of communication between the examinee terminal 16 and the wearable terminals 17 and 18, and the accuracy of determining whether or not communication is taking place between the examinee terminal 16 and the wearable terminals 17 and 18 can be maintained.

[0050] Since the supervisor 14 can move around the examination venue 13 carrying the portable detector 12, they can approach examinee 15 who is suspected of cheating. Therefore, examinee 15 who is cheating can be accurately identified, and examinee 15 who is not cheating can be prevented from being mistaken for examinee 15 who is cheating. In addition, the alert generated by the alert generator 55 is unlikely to be noticed by examinee 15. Therefore, it can be prevented from interfering with examinee 15's examination and disrupting their concentration. Furthermore, if the portable detector 12 determines Yes in step S24 and then makes the decision in step S25, misidentification can be reliably prevented.

[0051] Furthermore, since the supervisor 14 can move around the examination venue 13 carrying the portable detector 12, the number of portable detectors 12 can be reduced compared to the case where a detector is installed at each table 25. Therefore, the manufacturing cost of the portable detectors 12 and the construction cost of the communication detection system 10 can be reduced. In addition, because the number of portable detectors 12 is reduced, the management of the portable detectors 12 is easier compared to conventional technology, which involves installing a communication detector at every table and changing the threshold values ​​stored in the memory of each communication detector. Furthermore, because the number of portable detectors 12 is reduced, the processing load on the communication detection computer 11 that processes and stores the information and data acquired from the portable detectors 12 is reduced, and the amount of information and data stored in the auxiliary storage device 41 is reduced. Therefore, it is possible to speed up processing in the communication detection computer 11 and reduce the capacity of the auxiliary storage device 41.

[0052] Furthermore, if some of the information about the examination venue 13 and the location information of each supervisor 14 is pre-stored in the auxiliary storage device 51 of the portable detector 12, then in step S21 of Figure 3, it is not necessary to obtain the information about the examination venue 13 and the location information of each supervisor 14 from the communication detection computer 11. In other words, the portable detector 12 can execute the communication detection method of Figure 3 without obtaining information and control signals from the communication detection computer 11. As a result, the processing load of the control circuit 50 that processes and stores the information and data obtained by the portable detector 12 is reduced, and the amount of information and data stored in the auxiliary storage device 51 is reduced. Consequently, it is possible to speed up processing in the portable detector 12 and reduce the capacity of the auxiliary storage device 51.

[0053] (supplementary explanation) An example of the technical meaning of the matters disclosed in this embodiment is as follows: The portable detector 12 is an example of a communication detector for a cheater's terminal. The main unit 63 is an example of a main unit. The auxiliary storage device 51 is an example of a storage device. The control circuit 50 is an example of a control circuit. The alert generator 55 is an example of an alert generator. The antenna 54 is an example of an antenna. The examination venue 13 is an example of a specific area. The examinee 15 is an example of a cheater. The examinee terminal 16 is an example of a cheater's terminal. The wearable terminals 17 and 18 are examples of wearable terminals.

[0054] The decisions in steps S22, S24, and S25 are examples of the first processes executed by the control circuit. The process in step S26 is an example of the second process executed by the control circuit. The process in step S21 is an example of the third process executed by the control circuit. The process in step S24 is an example of the fourth process executed by the control circuit. The process in step S22 is an example of the fifth process executed by the control circuit.

[0055] This embodiment is not limited to what is disclosed with reference to the drawings, and can be modified in various ways without departing from its essence. The specific area may be a space not partitioned by shielding objects such as side walls. For example, if a test-taker is permitted to temporarily go to a restroom from the examination venue, a monitor carrying a portable detector can move through corridors, stairs, passages, etc., and use the portable detector to detect radio wave communication between the test-taker's terminal and the wearable terminal, thereby executing the communication detection method shown in Figure 3, and the communication detection method corresponding to the application example in Figure 3. In such cases, corridors, stairs, passages, restrooms, etc., constitute the specific area. The presence or absence of a table is irrelevant. In other words, as long as the user's movement within the specific area is restricted, that is, the user's position is fixed, the communication detector, communication detection computer, and communication detection system can identify one user who is communicating radio signals with a fraudulent terminal.

[0056] Furthermore, the radio communication standard between the test subject's terminal and the wearable device detected by the portable detector may be a standard other than Wi-Fi or Bluetooth, such as WiMAX (registered trademark, Worldwide Interoperability for Microwave Access). Also, the short-range wireless communication detected by the portable detector may be a communication method other than radio communication, such as infrared communication.

[0057] The examinations described in this embodiment include university entrance exams, high school entrance exams, junior high school entrance exams, etc., as well as qualification exams, promotion exams, regular exams, etc. Furthermore, the examination venue may have any shape in plan view, such as a circle, ellipse, triangle, pentagon, hexagon, etc. Also, the examination venue may be located either inside or outside a building.

[0058] The “communication detection computer” disclosed in this embodiment and its drawings can also be defined as a “fraudulent information processing computer.” Furthermore, the “processing unit” can also be defined as a “processing circuit.” Furthermore, the “storage device” can also be defined as a “storage circuit.” Furthermore, the “control unit” can also be defined as a “control circuit.” Furthermore, the “operating unit” can also be defined as an “operating device.” Furthermore, the “wearable terminal” can also be defined as a “wearable computer.” Furthermore, the “examinee terminal” can also be defined as an “examinee computer.”

[0059] This embodiment also discloses the following communication detection computer and communication detection system. For example, a communication detection computer is disclosed which is connected to a communication detector for a fraudulent terminal held by a monitor in a specific area in order to detect whether or not there is communication by a fraudulent terminal held by a fraudulent person in a specific area, and which has a storage device in which a program is stored, and a control circuit that reads the program stored in the storage device and executes processing, wherein the control circuit performs a first process of determining whether or not there is communication between the fraudulent terminal and a wearable terminal worn on the body of the fraudulent person by processing information obtained from the communication detector for the fraudulent terminal, and a second process of sending a control signal to the communication detector for the fraudulent terminal that generates an alert at the communication detector when it is determined that communication has occurred between the fraudulent terminal and the wearable terminal.

[0060] Furthermore, a communication detection system is disclosed, comprising: a communication detector for a fraudulent terminal provided within a specific area to detect whether or not communication has occurred by a fraudulent terminal possessed by a fraudulent person within that specific area; and a communication detection computer that performs bidirectional communication with the communication detector for the fraudulent terminal, wherein the communication detection computer comprises a storage device in which a program is stored and a control circuit that reads the program stored in the storage device and executes processing, wherein the communication detector for the fraudulent terminal is possessed by a monitor moving within the specific area to monitor the fraudulent person and is equipped with an alert generator, and the control circuit performs a first process of determining whether or not communication has occurred between the fraudulent terminal and a wearable terminal worn on the body of the fraudulent person by processing information obtained from the communication detector for the fraudulent terminal, and a second process of sending a control signal to the communication detector for the fraudulent terminal to generate an alert in the alert generator when it is determined that communication has occurred between the fraudulent terminal and the wearable terminal. [Industrial applicability]

[0061] This embodiment can be used as a communication detector for malicious terminals to determine whether or not communication has occurred between a malicious terminal and a wearable terminal within a specific area. [Explanation of Symbols]

[0062] 10...Communication detection system, 11...Communication detection computer, 12...Portable communication detector, 16...Test subject terminal, 17,18...Wearable terminal, 50...Control circuit, 41,51...Auxiliary storage device, 54...Antenna, 55...Alert generator, 63...Main unit

Claims

1. A communication detector that detects whether or not there is communication from a malicious device possessed by a malicious person within a specific area, A main unit possessed by a monitor who moves within the specified area to monitor the aforementioned fraudster, The main body is provided with a memory device that stores a program and stores a threshold value for determining whether or not communication has taken place between the wearable terminal worn by the fraudster and the fraudster's terminal by comparing the communication strength with the threshold value. A control circuit provided in the main body reads the program stored in the storage device and executes processing, It has, The aforementioned control circuit is A first process that determines whether or not communication occurred between the unauthorized device and the wearable device by comparing the communication strength and the threshold, Based on the judgment result of the first process, a second process is performed to detect the location of the intruder within the specific area based on the communication strength, the movement of the observer, and the reception results at multiple locations. A communication detector for malicious devices that performs this operation.

2. A communication detector for a fraudulent terminal according to claim 1, The aforementioned control circuit is A third process for identifying each of the multiple tables located in the aforementioned specific area, A fourth process to identify, from among the multiple tables, the table used by the fraudster who possesses the fraudster's device with which communication with the wearable device took place; A communication detector for malicious devices, which further performs the same function.

3. A communication detector for a fraudulent terminal according to claim 2, The main unit is further provided with an antenna for receiving radio signals communicated between the unauthorized terminal and the wearable terminal. The control circuit further performs a fifth process to determine the movement path of the observer within the specific area. The fourth process performed by the control circuit is a communication detector for a fraudulent terminal that identifies the table being used by the fraudulent when the observer moves to both sides of a predetermined table and the antenna receives radio signals on both sides of the predetermined table.

4. A communication detector for a fraudulent terminal according to claim 1, The aforementioned specific area includes the examination venue, The aforementioned cheats include communication detectors for cheating devices, including those used by test takers.

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