KR102034143B1 - Method and application for judgement of fake gps location information - Google Patents

Abstract

A method for determining whether a user client has forged GPS location information, the method comprising: activating wireless data, activating a GPS location provider, activating a network location provider, and obtaining GPS location information from the GPS location provider. Obtaining network location information from the network location provider; and determining that the GPS location information is forged if the distance between the GPS location information and the network location information is out of a predetermined range. This is disclosed.

Description

Method and application to determine whether GPS location information is forged {METHOD AND APPLICATION FOR JUDGEMENT OF FAKE GPS LOCATION INFORMATION}

The present invention relates to a method and an application for determining whether to forge GPS location information.

Global Positioning System (GPS) is a satellite navigation system that receives signals from GPS satellites and calculates the user's current position. It is mainly used in navigation devices such as aircraft, ships, and cars, and recently, it is being used in smartphones and tablet PCs.

Due to the dissemination and development of smartphones, location-based services utilizing GPS signal information received from smartphones have been variously provided. In the case of a location-based service for the convenience of the user, the service may be provided regardless of the authenticity of the GPS information. As a result, the Android operating system also offers an option to allow the user to allow mock locations.

In some cases, however, it may not be desirable to forge GPS information. For example, when the location information according to the GPS signal is used for security or authentication.

Registered Patent Publication No. 10-1213263, Dec. 11, 2012

The problem to be solved by the present invention is to provide a method and application for determining whether the GPS location information forgery.

Problems to be solved by the present invention are not limited to the above-mentioned problems, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention for solving the above problems the method for determining whether the user forgery of the GPS location information, the step of activating wireless data, activating the GPS location provider, activating the network location provider Obtaining GPS location information from the GPS location provider; obtaining network location information from the network location provider; and if the distance between the GPS location information and the network location information is out of a predetermined range, the GPS And determining that the location information is forged.

In the determining that the GPS location information is forged, when the distance between the GPS location information and the network location information is out of a predetermined range, the GPS location information is forged. And determining that it has been done.

According to another aspect of the present invention for solving the above problems, a method for a user client to determine whether the GPS location information forgery, activating the wireless data, activating the GPS location provider, activating the network location provider In a normal mode, continuously obtaining GPS location information from the GPS location provider; at a first time point, obtaining first network location information from the network location provider; Comparing the first GPS location information acquired within the time range with the first network location information; and when the distance between the first GPS location information and the first network location information is out of a predetermined range, enters a forgery verification mode. And in the counterfeit verification mode, switching from the GPS location provider and the network location provider. Continuously obtaining at least one GPS location information and at least one network location information, wherein a distance between at least one of the at least one GPS location information and the at least one network location information and the network location information is within a predetermined range; If so, switching to the normal mode.

The method may further include blocking the user client from using GPS location information in the forgery verification mode.

Further, in the forgery verification mode, a predetermined reference number of times when a distance between at least one GPS location information and network location information of the obtained one or more GPS location information and the one or more network location information is out of the predetermined range In case of abnormality, the method may further include determining that the GPS location information is forged.

The method may further include determining that the GPS location information is forged when at least one GPS location information having at least a distance within the predetermined range and at least one network location information are not obtained in the forgery verification mode. It may further include.

In addition, the network location information is obtained using at least one of base station information, Wi-Fi AP (Access Point) information, and Bluetooth beacon information of the wireless network.

In addition, the user client is installed with an application for managing the time and attendance of the user, the method, the user client, executing the application, displaying the interface for checking the user's attendance, the interface Receiving a work check request from the user, and in the normal mode, approving the work check request when the GPS location information received from the GPS location provider is included in the check availability range of the user And transmitting information on the user's approval to go to the server to the server.

The approving the attendance check request may include: acquiring the attendance check request in a secure mode when GPS location information cannot be obtained from the GPS location provider or when the user client is in the forgery verification mode; The method may further include transmitting to the server that the attendance check request has been approved in the secure mode.

Application stored in a computer-readable recording medium to perform the method for determining whether the forgery of the GPS position information according to an aspect of the present invention for solving the above problems.

Other specific details of the invention are included in the detailed description and drawings.

According to the disclosed embodiment, it is possible to prevent abusing of users for various location-based services by determining whether the GPS is forged.

In particular, the existing GPS forgery determination system determines whether or not the GPS forgery based on the leap of the GPS location information, it was difficult to determine whether the forgery for the non-contiguous GPS information, such as turning the GPS off and then on, the implementation According to the example, it is possible to determine whether the forgery even for non-contiguous GPS information.

Effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the following description.

1 is a diagram illustrating a user client according to an exemplary embodiment.
2 is a flowchart illustrating a method in which a user client determines whether to forge GPS location information according to an exemplary embodiment.
3 is a flowchart illustrating a method in which a user client determines whether to forge GPS location information according to another exemplary embodiment.
4 is a flowchart illustrating a method of determining whether a GPS is forged in a time and attendance management system according to an exemplary embodiment.
5 is a diagram illustrating an example of an interface for checking a user's going to work.
6 is a diagram illustrating an example of an interface displayed on a user terminal in a fake verification mode.
7 illustrates an example of an interface displayed on a user terminal when GPS is not received.
8 is a diagram illustrating a attendance check system according to the disclosed embodiment.

Advantages and features of the present invention, and methods for achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be embodied in various different forms, and the present embodiments only make the disclosure of the present invention complete, and those of ordinary skill in the art to which the present invention belongs. It is provided to fully inform the skilled worker of the scope of the invention, which is defined only by the scope of the claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In this specification, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, "comprises" and / or "comprising" does not exclude the presence or addition of one or more other components in addition to the mentioned components. Like reference numerals refer to like elements throughout, and "and / or" includes each and all combinations of one or more of the mentioned components. Although "first", "second", etc. are used to describe various components, these components are of course not limited by these terms. These terms are only used to distinguish one component from another. Therefore, of course, the first component mentioned below may be a second component within the technical spirit of the present invention.

Unless otherwise defined, all terms used in the present specification (including technical and scientific terms) may be used in a sense that can be commonly understood by those skilled in the art. In addition, terms that are defined in a commonly used dictionary are not ideally or excessively interpreted unless they are specifically defined clearly.

As used herein, the term "part" or "module" refers to a hardware component such as software, FPGA, or ASIC, and "part" or "module" plays certain roles. However, "part" or "module" is not meant to be limited to software or hardware. The “unit” or “module” may be configured to be in an addressable storage medium or may be configured to play one or more processors. Thus, as an example, a "part" or "module" may include components such as software components, object-oriented software components, class components, and task components, processes, functions, properties, Procedures, subroutines, segments of program code, drivers, firmware, microcode, circuitry, data, databases, data structures, tables, arrays and variables. Functions provided within components and "parts" or "modules" may be combined into smaller numbers of components and "parts" or "modules" or into additional components and "parts" or "modules". Can be further separated.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram illustrating a user client according to an exemplary embodiment.

In one embodiment, the user client 100 is driven within a computing device that includes at least one processor. Each module illustrated in FIG. 1 may be implemented by different processors or hardware modules, or one or more modules may be implemented together by the same processor or hardware module.

In the disclosed embodiment, “user client” may mean a user terminal including at least one processor.

Referring to FIG. 1, the user client 100 includes a controller 110, a GPS location provider 120, a network location provider 130, and a GPS manipulation application 140.

The controller 110 obtains information about the location of the user client 100 from the GPS location provider 120 and the network location provider 130.

In one embodiment, the GPS location provider 120 receives a signal from at least one GPS satellite 10 and determines the location of the user client 100 using the signal received from the GPS satellite 10.

The controller 110 obtains GPS location information from the GPS location provider 120.

In one embodiment, the network location provider 130 receives information from the at least one base station 20 to determine the location of the user client 100. The base station 20 refers to a wireless network base station installed by a communication company to use a cellular phone and a wireless network.

In one embodiment, the network location provider 130 receives wireless network information from one or more base stations and determines the location of the user client 100 based on the strength of the wireless network signal received from each base station.

In an embodiment, the network location provider 130 receives wireless network information from a plurality of base stations and determines the location of the user client 100 using triangulation.

In one embodiment, the wireless network server (not shown) determines the location of the user client 100 by using the information of the user client 100 received from each base station, and the user client through the network location provider 130 The location of the user client 100 is transmitted to 100.

The controller 110 obtains network location information from the network location provider 130.

The method and path for obtaining network location information are not limited, and network location information may be obtained using various methods in addition to the base station.

For example, the network location provider 130 may obtain network location information using information received from at least one Wi-Fi access point (AP) or Bluetooth beacon.

In one embodiment, the user client 100 may allow the use of simulated location (fake location) information.

The user client 100 may transfer the simulation location information generated by the user's input or the application installed in the user client 100 to the control unit 110 and perform various tasks by using the simulation location information.

For example, the GPS manipulation application 140 installed in the user client 100 may generate virtual GPS location information and transmit the generated virtual GPS location information to the controller 110. For example, when the controller 110 requests GPS location information from the GPS location provider 120, the GPS manipulation application 140 may transmit virtual GPS location information to the controller 110 instead of the GPS location provider 120. have.

However, the location information may be used for security, authentication, and recording of important content, and so on, in some cases, the user client 100 may need to restrict the use of the simulated location.

2 is a flowchart illustrating a method in which a user client determines whether to forge GPS location information according to an exemplary embodiment.

To implement the method according to FIG. 2, the user client 100 activates wireless data, a GPS location provider and a network location provider.

In an embodiment, the user client 100 may determine whether to activate wireless data, Wi-Fi, and Bluetooth communication functions, and determine whether to activate each function.

In one embodiment, the user client 100 may determine whether to allow the simulation location. For example, if the user client's firmware or operating system allows the use of the simulated location, or if the user can determine whether to use the simulated location, whether the user client 100 is configured to use the simulated location. You can judge. In one embodiment, the forgery determination method according to the disclosed embodiment may be used only when the user client 100 is set to use the simulated location, but in some cases, the simulated location information may be input in a different path. Regardless of whether or not allowed forgery determination method according to the disclosed embodiment may be used.

In operation S210, the user client 100 obtains GPS location information from the GPS location provider 120. In one embodiment, the GPS location provider 120 may be configured as a hardware or software module, or may be configured in the form of a function that operates according to a call of the controller 110.

In operation S220, the user client 100 obtains network location information from the network location provider 130. In an embodiment, the network location provider 130 may be configured as a hardware or software module, or may be configured as a function that operates according to a call of the controller 110.

In step S230, the user client 100 determines that the GPS location information is forged when the distance between the GPS location information acquired in step S210 and the network location information obtained in step S220 is out of a predetermined range.

In one embodiment, if the distance between the GPS location information acquired in step S210 and the network location information obtained in step S220 is out of a predetermined range, the user client 100 may determine a GPS location. It can be determined that the information is forged.

3 is a flowchart illustrating a method in which a user client determines whether to forge GPS location information according to another exemplary embodiment.

3 is a diagram illustrating an embodiment of the method illustrated in FIG. 2. Therefore, even if omitted in relation to FIG. 3, the contents described in relation to FIG. 2 may be applied to the method of FIG. 3.

To implement the method according to FIG. 3, the user client 100 activates wireless data, a GPS location provider and a network location provider.

In an embodiment, the user client 100 may determine whether to activate wireless data, Wi-Fi, and Bluetooth communication functions, and determine whether to activate each function.

In one embodiment, the user client 100 may determine whether to allow the simulation location. For example, if the user client's firmware or operating system allows the use of the simulated location, or if the user can determine whether to use the simulated location, whether the user client 100 is configured to use the simulated location. You can judge. In one embodiment, the forgery determination method according to the disclosed embodiment may be used only when the user client 100 is set to use the simulated location, but in some cases, the simulated location information may be input in a different path. Regardless of whether or not allowed forgery determination method according to the disclosed embodiment may be used.

In the method shown in FIG. 3, the user client 100 operates in two modes, a normal mode and a fake verification mode.

The normal mode is a mode that is operated when it is determined that non-forged GPS location information is normally acquired, and the forgery verification mode is a mode that is operated for verification when it is suspected that the GPS location information is forged.

In operation S310, the user client 100 continuously obtains GPS location information from the GPS location provider 120 in the normal mode.

For example, the user client 100 acquires GPS location information at predetermined intervals or continuously at arbitrary intervals.

As another example, the user client 100 obtains GPS location information whenever a signal is received from the satellite 10.

The interval at which the user client 100 acquires the GPS location information may be more than several times per second or once every few seconds, but is not limited thereto.

In operation S320, the user client 100 obtains first network location information from the network location provider 130 at a first time point.

In an embodiment, the first viewpoint may be a predetermined specific viewpoint or may be any viewpoint.

For example, the first time point may be a time point for executing a specific program or for the user client 100 to utilize location information. As another example, the first time point may be a time point determined by the user client 100 at a predetermined cycle or arbitrarily.

In step S330, the user client 100 compares the GPS location information obtained in step S310 with the network location information obtained in step S320.

Specifically, the user client 100 compares the first GPS location information and the first network location information acquired within a predetermined time range before and after the first time point.

For example, the user client 100 may compare the GPS location information acquired immediately before the first network location information is acquired or the GPS location information acquired immediately after the first network location information is acquired with the first network location information. have.

In operation S340, when the distance between the first GPS location information and the first network location information is out of a predetermined range, the user client 100 switches to the forgery verification mode.

When the distance between the first GPS location information and the first network location information is within a predetermined range, the user client 100 operates in the normal mode.

In one embodiment, the user client 100 may initially not be a normal mode or a fake verification mode. When the GPS function is activated, the user client 100 first performs verification according to steps S310 to S340, and returns to a normal mode when the distance between the first GPS location information and the first network location information is within a predetermined range. Operate in the counterfeit verification mode when the distance between the first GPS location information and the first network location information is out of a predetermined range.

In operation S350, the user client 100 operates in the normal mode and performs the GPS location information acquisition operation according to operation S310.

In operation S360, the user client 100 continuously obtains one or more GPS location information and one or more network location information from the GPS location provider 120 and the network location provider 130 in the forgery verification mode, and the obtained one. When the distance between the GPS location information and the network location information of at least one of the GPS location information and the one or more network location information is within a predetermined range, it is switched to the normal mode. The number and frequency of acquiring GPS location information and network location information are not limited.

In an embodiment, the user client 100 blocks the user location from the GPS location information in the forgery verification mode. In this case, when the user client 100 operates in the forgery verification mode, the user client 100 receives at least one GPS location information and network location information having a distance within a predetermined range until the user client 100 is converted to the normal mode. GPS location information is blocked from use.

In one embodiment, the user client 100, in the forgery verification mode, the distance between the GPS location information and the network location information of at least one of the obtained one or more GPS location information and the one or more network location information has a predetermined range. If the deviation occurs more than a predetermined reference number, it is determined that the GPS location information is forged.

In one embodiment, the user client 100, in the forgery verification mode, if at least one GPS location information and at least one network location information having a distance within a predetermined range for a predetermined time is not obtained, the GPS location information is I think it is a forgery.

In one embodiment, the GPS forgery determination method according to the disclosed embodiment is utilized in the time and attendance management system using GPS.

In an embodiment, an application for managing time and attendance is installed in a user client of employees, and the server receives GPS information from each user client to determine whether and when the employees go to work.

In this case, when the GPS location information is forged, a problem may occur in the reliability of the time and attendance management system. Thus, a reliable time and attendance management system may be provided using the GPS forgery determination method according to the disclosed embodiment.

4 is a flowchart illustrating a method of determining whether a GPS is forged in a time and attendance management system according to an exemplary embodiment.

The method shown in FIG. 4 is one embodiment of the method shown in FIGS. 2 and 3. Therefore, although omitted in relation to FIG. 4, the contents described in relation to FIGS. 2 and 3 may also be applied to the method of FIG. 4.

In step S410, the user client 100 executes a time and attendance management application. The user client 100 displays an interface for checking the work of the user.

Referring to FIG. 5, an example of an interface for checking a user's work attendance is illustrated.

In FIG. 5, the user client 100 displays an interface on the screen of the user terminal 500.

For example, the map 510 and the attendance check button 520 may be displayed on the screen of the user terminal 500. On the map 510, the company 512 and the predetermined range 514 in which the user can check the work for the company 512 are displayed.

In addition, the map 510 displays the location 516 of the user terminal 500. When the location 516 of the user terminal is included in the range 514, the attendance check button 520 may be activated.

In addition, the user terminal 500 may display whether the GPS is normally received (without forgery) and whether the user can check the attendance.

The user client uses the displayed interface to receive a work check request from the user.

In operation S420, the user client 100 determines whether the user client 100 is in a normal mode.

In an embodiment, when the user client 100 is not in the normal mode, the user client 100 may reject the user's attendance check request.

In one embodiment, if the user client 100 is not in the normal mode, in step S425 the user client 100 is switched to the secure mode.

In the disclosed embodiment, the security mode is used to solve a problem that may occur when the GPS error of the user client 100 or the user does not allow the user to check in at a space where GPS signals are not well received. The security mode is a mode that allows the user to go to work once, but records that the positioning using the GPS has not been performed normally.

For example, if the user cannot go to work due to a temporary GPS error of the user client 100 even though the user is on time, it may cause inconvenience to the user as well as inconvenience. In addition, if the user's working place or business trip location is difficult to receive the GPS signal, time and attendance management using the GPS is basically impossible.

Therefore, the disclosed embodiment allows the user to first check in to work by using the security mode, but records the fact that the positioning using the GPS has not been normally performed in the user client 100 or the server, so that other As a means, leave room for checking whether the user actually goes to work.

For example, if the user client 100 cannot obtain GPS location information from the GPS location provider 120 or if the user client 100 is in the forgery verification mode, the user may approve a work check request in a secure mode. . The user client 100 may transmit information to the server that the attendance check request has been approved in the secure mode.

In one embodiment, the server instead of the user client 100 may determine whether to approve the user's attendance check in a secure mode, and transmit the approval to the user client 100.

Referring to FIG. 6, an example of an interface displayed on a user terminal in a fake verification mode is illustrated.

Referring to FIG. 6, the user terminal 500 displays information indicating that the GPS is forged.

In an embodiment of the present disclosure, the user client 100 may determine that attendance check is impossible, information indicating that attendance check is impossible is displayed on the screen of the user terminal 500, and the attendance check button 520 may be deactivated.

In another embodiment, the user client 100 determines that the attendance check can be performed in a secure mode, and the information indicating that the attendance check can be performed in the secure mode is displayed on the user terminal 500, and the button for checking the attendance in the secure mode ( 530 is displayed on the user terminal 500.

Referring to FIG. 7, an example of an interface displayed on a user terminal when GPS is not received is illustrated.

The user terminal 500 displays information indicating that GPS is not received, and information indicating that work checking can be performed in a secure mode. In addition, the user terminal 500 is displayed a button 530 that can be checked to go to the security mode.

In an embodiment, the user terminal 500 or the server may request to authenticate to work using a means other than GPS in the security mode. For example, the user terminal 500 may request authentication by requesting location authentication using network location information or by uploading a picture taken at a specific location.

As another example, the user terminal 500 may allow a user to authenticate time and attendance by recognizing a barcode attached to a work place with a camera.

As another example, the user terminal 500 may allow the user to authenticate time and attendance by recognizing the NFC tag attached to the work place.

As another example, the user terminal 500 may allow a user to authenticate time and attendance by recognizing a beacon attached to a work place.

As another example, the user terminal 500 may allow a user to authenticate time and attendance by recognizing a WiFi access point (AP) installed in a work place. In detail, the operator may register information on one or more WiFi APs installed in the workplace with the server. When it is confirmed that the user terminal 500 receives a signal from at least one WiFi AP installed at the workplace, the user terminal 500 or the server may determine that the user has entered the workplace.

The other attendance authentication methods described above may be used to replace the GPS in the secure mode, and may be used to complement the GPS even in the normal mode.

For example, since GPS may have some errors, it may be used for checking whether an employee actually goes to his or her office or office.

When the user client 100 is in the normal mode, in step S430, the user client 100 determines whether the GPS location information acquired by the user client 100 is included in the user's attendance check range.

In step S435, in the normal mode, when the GPS location information received from the GPS location provider 120 is not included in the user's checking available range, the user client 100 rejects the checking request.

In another embodiment, in the normal mode, when the GPS location information received from the GPS location provider 120 is not included in the user's attendance checking range, the interface for the attendance check request displayed on the user client 100 is deactivated. Can be.

In operation S440, in the normal mode, when the GPS location information received from the GPS location provider 120 is included in the user's checking available range, the user client 100 approves the checking request.

The user client 100 transmits information about the user's approval to go to the server.

In an embodiment of the present disclosure, the server may determine whether the user confirms whether to go to the office and transmit the approval to the user client 100 instead of the user client 100.

8 is a diagram illustrating a attendance check system according to the disclosed embodiment.

Referring to FIG. 8, the first and second work places 610, 620, and third work places 630, and ranges 612, 622, and 632 where work checks are possible for each work place are shown. Also shown in FIG. 8 are first staff A, 710, second staff B, 720, third staff C, 730, and fourth staff D, 750. FIG.

In one embodiment, each of the first place of work 610, the second place of work 620 and the third place of work 630 may be different branches of the same company. In another embodiment, the first commute 610, the second commute 620, and the third commute 630 may be business trips.

According to the disclosed embodiment, a special device (for example, a fingerprint reader or an NFC module) does not need to be installed in the work target area. If only the location of the work target area is set, each employee (710 to 740) can check whether or not to go by using the GPS location information received from each user client.

As a result, employees can manage their commute time and time, even at companies, different branches and locations.

Referring to FIG. 8, a commute record 800 of each employee is shown.

Record 800 includes the time and date each employee commute. In addition, it is possible to check whether each commute record is performed in the normal mode or in the secure mode.

In an embodiment, the server or the user client determines that the employee has left the office after a predetermined time has elapsed after the user client of each employee leaves the attendance check range 612 to 632 of each place of departure (610 to 630). can do.

In another embodiment, the server or the user client may determine that the employee has left the office when the user client of each employee is out of the check-in range 612 to 632 of each place (610 to 630) by more than a predetermined distance. have.

In the above embodiment, 'time to work' and 'time to work' are understood as a concept encompassing the time visited and the time left for each branch or business trip.

For example, in the record 800, a specific copper line record 810 of the third employee C 730 may be displayed as shown in FIG. 8.

The steps of a method or algorithm described in connection with an embodiment of the present invention may be implemented directly in hardware, in a software module executed by hardware, or by a combination thereof. The software module may be a random access memory (RAM), read only memory (ROM), erasable programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), flash memory, hard disk, removable disk, CD-ROM, or It may reside in any form of computer readable recording medium well known in the art.

In the above, embodiments of the present invention have been described with reference to the accompanying drawings, but those skilled in the art to which the present invention pertains may implement the present invention in other specific forms without changing the technical spirit or essential features. I can understand that. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive.

100: user client
110: control unit
120: GPS location provider
130: network location provider
140: GPS operation application

Claims (10)

In the method for determining whether the user client forgery the GPS location information,
Activating wireless data;
Activating a GPS location provider;
Activating a network location provider;
Continuously obtaining GPS location information from the GPS location provider;
Continuously obtaining network location information from the network location provider; And
Determining that the GPS location information is forged when a distance between the continuously obtained GPS location information and the continuously obtained network location information is out of a predetermined range by a predetermined reference number or more; Including;
The user client is installed with an application for managing the time and attendance of the user,
The method,
Executing, by the user client, the application;
Displaying an interface for checking attendance of the user;
Receiving an attendance check request from the user using the interface;
Approving the attendance check request when GPS location information received from the GPS location provider is included in the user's attendance checking range; And
Transmitting information on the user's approval to go to the server; Include more,
Approving the attendance check request,
If the GPS location information cannot be obtained from the GPS location provider or if the GPS location information of the user client is suspected to have been forged, the user client switches to a secure mode;
Receiving a check-in request from the user in the secure mode by using an interface capable of checking in / from the secure mode;
Approving the attendance check request in the secure mode;
Sending information to the server that the attendance check request has been approved in the secure mode; And
If the information indicating that the attendance check request is approved in the security mode is recorded in the server, receiving a confirmation request from the user after a predetermined time elapses; Including, the method. delete In the method for determining whether the user client forgery the GPS location information,
Activating wireless data;
Activating a GPS location provider;
Activating a network location provider;
In a normal mode, continuously obtaining first GPS location information from the GPS location provider;
At a first point in time, obtaining first network location information from the network location provider;
Comparing the first GPS location information acquired within a predetermined time range before and after the first time point with the first network location information;
Switching to a forgery verification mode when a distance between the first GPS location information and the first network location information is out of a predetermined range; And
In the forgery verification mode, one or more GPS location information and one or more network location information are continuously obtained from the GPS location provider and the network location provider, and at least one of the obtained one or more GPS location information and the one or more network location information. Switching to a normal mode when the distance between one GPS location information and network location information is within a predetermined range; Including;
The user client is installed with an application for managing the time and attendance of the user,
The method,
Executing, by the user client, the application;
Displaying an interface for checking attendance of the user;
Receiving an attendance check request from the user using the interface;
In the normal mode, when the GPS location information received from the GPS location provider is included in the available check-in range of the user, approving the attendance check request; And
Transmitting information on the user's approval to go to the server; Include more,
Approving the attendance check request,
When the GPS location information cannot be obtained from the GPS location provider or when the user client is in the forgery verification mode, the user client switches to a secure mode;
Receiving a check-in request from the user in the secure mode by using an interface capable of checking in / from the secure mode;
Approving the attendance check request in the secure mode;
Sending information to the server that the attendance check request has been approved in the secure mode; And
If the information indicating that the attendance check request is approved in the security mode is recorded in the server, receiving a confirmation request from the user after a predetermined time elapses; Including, the method. The method of claim 3, wherein
In the counterfeit verification mode, blocking the user client from using GPS location information; Further comprising, the method. The method of claim 3, wherein
In the counterfeit verification mode,
When the distance between at least one GPS location information and the network location information of the obtained one or more GPS location information and the one or more network location information is out of the predetermined range occurs more than a predetermined reference number, the GPS location Determining that the information is forged; Further comprising, the method. The method of claim 3, wherein
In the forgery verification mode, determining that the GPS location information is forged when at least one GPS location information and at least one network location information having a distance within the predetermined range are not acquired for a predetermined time; Further comprising, the method. The method of claim 3, wherein
The network location information,
Obtained using at least one of base station information, wireless access point (AP) information, and Bluetooth beacon information of a wireless network. delete delete An application stored on a computer-readable recording medium for carrying out the method of claim 1.

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