KR101920654B1 - Enterance control system and method based on near field communication - Google Patents

Abstract

The present invention relates to an NFC-based access management system, and more particularly, to an NFC-based access management system in which a visitor pre-reserves a smartphone application and requests permission to access the smartphone, Provides NFC-based access management system that can safely manage visitor information and facilitate convenience through tagging NFC access gate at the time of visit.

Description

BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to an access control system and an access control system,

The present invention relates to an NFC-based access management system, and more particularly, to a NFC-based access management system, in which a visitor preliminarily reserves an access through a smartphone app and requests access approval, The present invention relates to an NFC-based access control system capable of safely managing visitor information through tagging NFC access gate and facilitating convenience.

In order to solve the problem of lack of security, security and parking space in public institutions, private institutions, workplaces or apartment houses, only insiders are allowed to enter and exit, and outsiders are controlled. The access authentication system was managed by the expense or the guide at the entrance, but the electronic access authentication system was developed due to the burden of labor costs and time inefficiency.

In the electronic access authentication system, it is easy for an authorized internal person to enter and leave. However, there is still a problem that an external person such as a visitor has to go through a separate access permission process, a separate administrator must stay in order to control access, Causing discomfort and waste of time.

Recently, near field communication (NFC) technology has been applied to various products, especially NFC technology is applied to latest smartphone. NFC uses the same frequency band as existing RF cards and supports bidirectional RF communication, so it has advantages and features that conventional unidirectional RF communication does not have.

Currently, RFID cards are mostly used for access control, but there are security issues such as inconvenience of card issuance registration procedure and use of replica card . Conventionally, access control systems using RFID cards have difficulties in issuing, registering, and reissuing RFID cards, and incurring direct or indirect costs. In recent years, access control has been strengthened in buildings for security reasons. If the RFID card is not carried in the building, it is impossible for the accessing party or the security administrator to handle or manage the access.

In addition, it is difficult to track the RFID card because it relies solely on high cost passive methods such as reception desk operation or security guard employment in order to control access to irregular visitors.

Also, in access control using conventional RFID, large-scale companies or security-sensitive research institutes / institutions are performing visitor control by providing RFID card for visitors, but it is almost impossible to control by area and identification by RFID card Which is very disadvantageous in terms of the management of automated visitor entry records.

The present invention is contrived to solve the above-mentioned problems. As a result of the present invention, when a visitor submits a visit reservation through a smartphone app before visiting, the administrator approves the request and issues an accessable electronic key. And to provide an NFC-based access management system capable of being tagged on an NFC terminal by being loaded and being able to enter and exit.

Another object of the present invention is to provide an NFC-based access management system capable of selectively granting a 1: N (management place: terminal number) type access authorization to communicate with an access authentication server.

It is another object of the present invention to provide an NFC-based access control system capable of granting a plurality of electronic key validation conditions such as a plurality of condition periods / time zones / use times / days of week, do.

The present invention also provides an NFC-based access management system that enables a representative recipient to receive an NFC authentication key, transmit it to a companion in the form of a character, and allow a person who has received an electronic key to enter and exit through a smartphone app .

Also, in the present invention, the smartphone is tacked in an ONLINE form in the NFC gate in most cases, and the authentication key is read and transmitted to the authentication server to determine whether or not the smart card is accessed. The OTP (one time password) The present invention provides an NFC-based access control system capable of authenticating a visitor's access even when the NFC gate is in an OFFLINE state.

To achieve the above object, according to a first aspect of the present invention, an NFC-based access management system is provided. The NFC-based access management system includes a visitor-side smartphone including an NFC module and capable of installing an access-only application, an entrance-side authentication server for issuing an electronic key to the visitor's smartphone and authenticating the issued electronic key, And an NFC gate for opening and closing the gate according to the authentication result of the authentication server and the access-side authentication server, wherein the smartphone of the visitor establishes communication with the access-side authentication server and performs the NFC access function An access-only application to execute; A communication unit for performing data communication with an access-side authentication server under the control of an access-only application, a memory in which an access-only application is stored, an electronic key received from the authentication server is stored, and an NFC Module, the access-side authentication server includes a control unit for controlling an authentication operation of the access-side authentication server, a communication unit for communicating with a visitor smartphone or an administrator terminal, login / password information of the user, And an electronic key generation unit for generating an NFC-based electronic key by a command from an administrator terminal, wherein the access-side authentication server is based on an electronic key request received when an electronic key request is received from a visitor- And notifies the administrator terminal of the NFC Wherein the NFC gate is configured to read the electronic key stored in the smartphone of the visitor and store the read electronic key in a database To the entrance and exit authentication server, and to open or close the gate in accordance with the authentication result from the entrance and exit authentication server.

In the above-described aspect, it is preferable that the administrator terminal sets the authority information for the visitor who requests the visit, and the authority information includes the access valid period information, the visiting person information, the gate information that can be accessed, and the electronic key sharing information.

Also, the access validity period information is made to include at least one of a permissible access period, a permissible access time, an access count, or an accessable day of the week.

In the case of an electronic key configured to enable electronic key sharing from the administrator terminal, the electronic key received through the access-only application installed in the smartphone of the visitor can be copied to the access-only application installed in the smartphone of another visitor.

The NFC gate includes a control unit for controlling the operation of the NFC gate, a communication unit for performing data communication with the authentication server under the control of the control unit, an NFC reader for reading the NFC-based electronic key of the visitor, And a circuit breaker for opening and closing the gate.

An OTP (one time password) generator is provided to the access authentication server and the NFC gate, and the OTP provided to the access authentication server and the NFC gate are synchronized to generate the same OTP at the same time.

According to another aspect of the present invention, there is provided an access control method using an NFC-based electronic key, comprising: performing a visit reservation request to an access-side authentication server through an access-only application installed in a smart; Accessing the visit reservation request of the visitor from the entrance and exit authentication server, and notifying the manager terminal of the received visit reservation request; Allowing or denying approval for a visit reservation request from a manager terminal; A step of generating an electronic key in the entrance authentication server and storing the generated electronic key in the database and transmitting the electronic key to the smartphone of the visitor when the visiting reservation request is approved by the administrator terminal; Receiving an electronic key from a visitor's smartphone and tagging the NFC gate using the received electronic key; Receiving an electronic key from a smartphone of a visitor at an NFC gate and transmitting the received electronic key to an entrance authentication server to request authentication of the electronic key; Authenticating the validity of the electronic key transmitted from the entrance and exit authentication server, and transmitting the authentication result to the NFC gate.

In the case where the administrator terminal permits the approval of the visit reservation request of the visitor, the administrator terminal sets up the authority information for the visitor, and the authority information includes the access valid period information, the visiting person information, the gate information that can be accessed, .

In addition, it is desirable to verify the validity information of the electronic key at the access-side authentication server by further verifying the authority information with respect to the visitor.

In addition, when the FC gate receives the electronic key from the visitor's smartphone and transmits the received electronic key to the entrance authentication server, it is impossible to request authentication of the electronic key. In this case, And requesting the phone to input OTP information.

According to the present invention, when a visitor submits a visit reservation through a smartphone application before visiting, the manager approves the request and issues an accessable electronic key, and the visitor mounts it in a smartphone app and tags the NFC terminal So that the convenience of the user and the administrator can be improved.

In addition, according to the present invention, an advantage can be obtained that the selective access authorization in the form of 1: N (management place: number of terminals) is given to the NFC terminal, thereby enabling zone control.

Further, according to the present invention, a plurality of electronic key validation conditions such as a plurality of condition periods / time zones / use times / days of week can be given, and access can be permitted only when this condition is satisfied.

According to the present invention, since the representative booker can receive the NFC authentication key and share it with the companion, it is possible to freely access the companion even if a separate NFC card is not made in a place such as a hotel or a pension using the NFC access control Can be obtained.

Also, according to the present invention, it is possible to reduce the cost of maintaining the NFC terminal in the ONLINE state by using an OFFLINE NFC terminal having a small number of passengers.

1 is a view schematically showing a configuration of an NFC-based access management system according to the present invention;
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an NFC-
3 is a view schematically showing the configuration of an access-side authentication server in an NFC-based access management system according to the present invention.
FIG. 4 is an exemplary view of permitting selective access to a plurality of gates in an NFC-based access management system according to the present invention; FIG.
FIG. 5 is a diagram illustrating an access permission according to a time period / a time period / a day / an access count in an NFC-based access management system according to the present invention.
FIG. 6 is a diagram for explaining an electronic key sharing function in an NFC-based access management system according to the present invention; FIG.
FIG. 7 is a schematic view illustrating an internal configuration of an NFC gate in an NFC-based access management system according to the present invention; FIG.
8 is a diagram for explaining authentication of a visitor when the NFC gate is offline in the NFC-based access management system according to the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and how to accomplish them, will become apparent by reference to the embodiments described in detail below with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described below, but may be embodied in various forms.

The present embodiments are provided so that the disclosure of the present invention is thoroughly disclosed and that those skilled in the art will fully understand the scope of the present invention. And the present invention is only defined by the scope of the claims. Accordingly, in some embodiments, well known components, well known operations, and well-known techniques are not specifically described to avoid an undesirable interpretation of the present invention.

Like reference numerals refer to like elements throughout the specification. Moreover, terms used herein (to be referred to) are intended to illustrate embodiments and are not intended to limit the invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. Also, components and acts referred to as " comprising (or comprising) " do not exclude the presence or addition of one or more other components and operations.

Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs. Also, commonly used predefined terms are not ideally or excessively interpreted unless they are defined.

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

1 is a block diagram illustrating an embodiment of an NFC-based access management system 10 according to an embodiment of the present invention. 1, the NFC-based access management system 10 according to the present invention includes a visitor smartphone 100, an access-side authentication server 200, an access-side management terminal 300, and an access-side NFC And a gate 400.

The overall operation of the NFC-based access management system 10 will be described as follows. (1) A visitor requests a visit reservation and access approval to the access-side authentication server 200 through a smartphone application in advance, (2) The entrance-side authentication server 200 notifies the entrance-side management terminal 300 of the fact that the entrance-side authentication server 200 is stored in the entrance-side authentication server 200, (3) the entrance-side management terminal or the entrance- The smartphone 100 of the visitor side issues an electronic key valid for the period set by the administrator to the smartphone 100 of the visitor, and the visitor smartphone 100 stores the received electronic key and tags it on the entrance side NFC gate 400 (6) The entrance-side NFC gate 400 transmits the obtained electronic key to the entrance-side authentication server 200 to request access authentication. (7) The entrance-side authentication server 200 receives the electronic key received from the entrance-side NFC gate 400 After validated, is based on whether a valid key to execute the opening or closing of the entrance gate side NFC 400.

2 (a) is a view schematically showing an internal configuration of an NFC smartphone 100 of a visitor in the NFC-based access management system 10 according to the present invention. 2 (a), a visitor's smartphone 100 includes an application 110 for establishing communication with the access-side authentication server 200 and for executing an NFC access function, an NFC access application 110, A communication unit 120 for performing data communication with the access-side authentication server 200 under the control of the access-side authentication server 200, a memory 130 for storing the electronic key received from the access-side authentication server 200 while storing the NFC access application 110 And an NFC module 140 for performing NFC communication with the entrance-side NFC gate 400.

In order to use the NFC-based access management system 10 according to the present invention, the visitor first installs the NFC access application 110 on the user's smartphone 100, Authentication is performed. The user authentication is a process for connecting to the access-side authentication server 200, and can be implemented by setting, for example, a login ID and a password.

After generating the login ID and the password for the entrance and exit authentication server 200, the NFC access application 110 performs access control between the visitor and the entrance and exit authentication server using 3G / LTE communication or WiFi-Internet communication . For example, as shown in FIG. 2 (b), a visitor visits the NFC access application 110 before entering NFC, such as the date of the visit, the visiting time, the number of the person in charge, the phone number of the person in charge, A visit application is requested through a screen provided from the access application 110. [

When the user presses the "Apply" or "Complete" button on the screen provided from the application 110, the application 110 transmits the visit application created through the application 110 to the access server 200 through the communication unit 120 do.

The NFC access application 110 also has a function of storing the received electronic key in the memory 130 when the electronic key is received from the entrance and exit authentication server 200 and a function of storing the electronic key The NFC access application 110 preferably further includes a function of automatically deleting the electronic key that has passed the usage period from the memory 130. [

In addition, according to the present invention, the NFC access application 110 further includes an OPT (One Time Password) generation module 112. The OTP generation module 112 is effectively operated when the NFC terminal (NFC reader) included in the entry-side NFC gate is offline and includes the OTP authentication module.

FIG. 3 is a block diagram schematically showing the internal configuration of the entrance-side authentication server 200 of the NFC-based entrance management system 10 according to the present invention. 3, the access-side authentication server 200 includes a control unit 240 for controlling the operation of the access-side authentication server 200, a communication unit 240 for communicating with the visitor smartphone 100 or the access- A database 230 for storing login / password information of a user registered in the authentication server 200, an electronic key for generating an NFC-based electronic key by an instruction from the access management terminal 300, A message generator 250 for generating a message to the visitor smartphone 100 or the access administrator terminal 300 and an OTP generator 260 for generating a one-time password (OTP) .

The control unit 310 receives the visit request data from the visitor smartphone 100 through the communication unit 220 and transmits a visit approval message to the contact person based on the contact person information described in the received visit request data, (250). The control unit 210 causes the electronic key generation unit 240 to generate the electronic key and transmits the generated electronic key to the visitor's smartphone 300. [ (100).

The database 230 stores the information on the visitor created through the application 110, the validity period of the issued electronic key, access right, access record, and the like. The control unit 310 is configured to authenticate access to the NFC gate side NFC gate 400, which will be described later, based on the information of the electronic key stored in the database 230. [

The electronic key generation unit 240 basically generates an electronic key based on the right information input from the access management terminal 300. [ The authority information input from the entrance-side management terminal 300 preferably includes, but is not limited to, a gate accessible by zone, an access validity period, an electronic key sharing function, and the number of visitors.

The message generator 250 transmits an approval message when the visit request is approved in response to the visit request message in the visitor-side smartphone 100, and when the visit request message is received, The ali is configured to send a visit request notification message. The visit request notification message may be delivered via an in-house messenger in the entrance side or may be transmitted in an SMS form to a mobile phone of a pre-registered contact person.

Also, the message generator 250 may detect a visitor whose electronic key (authentication key) has expired at the entrance or exit of the NFC gate under the control of the controller 210, or a visitor who wants to leave the building with the expired authentication key, Or may detect a visitor who intends to enter the building with an expired authentication key and send a notification message to the manager.

The OTP generator 260 operates to generate an OTP for the authentication request of the application 110 of the smartphone of the user when the NFC gate 400 is off-line. In this case, the NFC gate 400 is also connected to the authentication server 200 ) ≪ / RTI > OTP is provided. The OTP generation unit 260 may be used to perform authentication for a visitor when the NFC gate 400 is in an offline state.

Next, the access manager terminal 300 will be described. The access-side manager terminal 300 can be a personal computer or a smartphone on the entrance and exit side. The entrance-side manager terminal 300 basically has a visiting authority setting function (access validity period, visiting number, (Total visitor, daily visitors, unapproved status, approval key issuance status), approval / disapproval of application for access approval / deletion, display / inquiry of access status list, Approval key harmonization / management function, and text sending function to the administrator upon request of the application.

Hereinafter, the visit authority setting function will be described in more detail. In the present invention, N gates can be approved for one electronic key. Fig. 4 is a diagram showing the permission of approval for the gates which can be accessed by such zones.

As shown in FIG. 4, the access-side administrator terminal 300 can designate an accessible gate and an unacceptable gate for each visitor through access management software. In FIG. 4, the passenger 1 indicates that the gate 1, the gate 2, and the gate 3 are allowed to be approved, the gate 4 is not permitted, and the passenger 2 has only the gate 2 and the gate 4.

In the embodiment of the present invention, it is possible to set the approval / disapproval of each of the gates for one electronic key based on the NFC, so that the institute and the national institution requiring high security, or the hotel / It is possible to achieve a high level of security by automatically permitting access to each of a plurality of NFC gates for a user who has been given an electronic key at a convenience facility or to automatically implement a differentiated service for the service charge .

It is also possible to provide the access authentication server 200 with a DB that stores the access right for each gate for the visitor or the accessing person who recommends such access, and when the electronic key is issued, the access right for each gate is designated by the administrator, And the NFC gate 400 can be implemented by querying the authentication server 200 for the access right of the gate to the accessing party.

Further, in the present invention, it is possible to set the entrance validity period to be limited by period / time zone / number of times of use / day of the week. Fig. 5 is a diagram showing an example of setting the access valid period in the present invention. As shown in FIG. 5, since there is no restriction on the time zone of the passenger 1, while the visiting day is limited to Monday and Tuesday, and there is no access restriction or restriction, the passenger 1 can enter without limitation on the Monday and Tuesday within the validity period As shown in FIG.

On the other hand, there is no restriction on the day of the party, but the time zone is limited to 1:00 pm to 3:00 pm. It can be seen that such a visitor 2 can freely enter and exit between 1:00 pm and 3:00 pm within the period.

Limitations for such period / time period / number of use / day of the week allow for the management of parking facilities and efficient management of buildings by permitting students to enter and exit only at the day and time of the lecture.

In addition, by limiting the number of accesses to the facilities according to the hotel / convenience facilities / public spaces, it is possible to automatically realize a differential service, thereby achieving cost reduction and improved service quality.

Such permission is granted by storing the database table such as the valid period, the time zone, the day of the week, the number of times of access, etc. of the NFC electronic key in the authentication server 200 to the visitor, designating the condition when issuing the electronic key, When an authentication request for an electronic key is received, the corresponding condition is searched to permit access.

In the present invention, electronic keys generated for visitors can be shared. 6 is a diagram illustrating sharing of the generated electronic key. 6, the representative presenter or the representative visitor requests the authentication server 200 to issue an electronic key, and the authentication server 200 copies the electronic key from the administrator terminal 300, And transmits the generated electronic key to the representative presenter. The representative presenter uses the electronic key sharing function provided in the application 110 of the smartphone to share the electronic key with the common visitor, for example, the common guest 1 to the guest 3 .

Since the NFC authentication key is issued only to the representative reservation person in the case of the hotel room / pension, the electronic key sharing function of the guest room / pension can be carried out with the representative reservation person having the NFC electronic key at the time of going out, The NFC electronic key issued by a character or application message can be set to be shared with the occupant, thereby eliminating the inconvenience.

Such a function is that the representative reservator transmits the electronic key, which is issued through the application 110 of the smartphone, to the common guests, and the common guests can mount the NFC electronic key extracted from the received text in the application 110 A sharing function capable of opening a door individually can be implemented.

In addition, such a function can solve the problem of issuing an electronic key for each visitor when a plurality of visitors visit the visitor. For example, in the case where there are three visitors in the past, each of the three users must individually receive the electronic key at the destination. However, by sharing the electronic key by the number of times designated by the administrator by the electronic key sharing function, The inconvenience of having to obtain a key can be solved.

7 is a view schematically showing an internal configuration of the entrance side NFC gate 400. As shown in FIG. 7, the access NFC gate 400 includes a control unit 410 for controlling the operation of the NFC gate 400, a communication unit 420 for performing data communication with the authentication server 200, An NFC reader 430 for reading the NFC-based electronic key of the visitor, a breaker 440 for opening and closing the gate according to the authentication result of the authentication server 200, and an OTP generator installed in the authentication server 200, And an OTP generator 450 for generating an OTP.

The communication unit 420 of the entrance / exit NFC gate 400 is connected to the authentication server 200 via a wireless or wired network. The NFC reader 430 reads the electronic key transmitted from the NFC module of the visitor smartphone and the control unit 410 transmits the read electronic key information to the authentication server 400 through the communication unit 420.

The breaker 400 is operated to open or close the gate in response to a command from the control unit 410 based on the authentication information transmitted from the authentication server 200. [ Meanwhile, the OTP generation unit 450 operates to perform visitor authentication based on the OTP in the off-line state isolated from the network by the communication unit 420.

Referring to FIG. 7, in the NFC-based access management system 10, (1) a visitor performs a visiting reservation and access approval request to the access-side authentication server 200 through a smartphone application in advance, (2) Side authentication server 200 and the access-side authentication server 200 notifies the access-side management terminal 300 of the access-side management server 200 or the access-side management terminal 200 or the access- The visitor smartphone 100 stores the received electronic key and performs tagging on the entrance side NFC gate 400 using the electronic key stored in the electronic key of the visitor smart phone 100 do.

However, since the NFC gate 400 is off-line, the NFC gate 400 can not perform the electronic key authentication to the authentication server 200 as described above. In this case, the NFC gate 400 requests the authentication server 200 to authenticate the OTP to the visitor-side smartphone 100 instead of performing the electronic key authentication request, and (7) The authentication server 200 verifies the electronic key information provided to the visitor when the OTP request is received and generates the OTP if the visitor is an appropriate visitor. When the NFC-based OTP received through the application 110 is tagged in the NFC gate 400, the NFC gate 400 transmits the OTP (OTP) through the OTP generator 450, which is synchronized with the OTP of the authentication server 200, And to open the gate through the breaker 440, if any, while not opening the gate if different.

According to such a configuration, even when the NFC gate 400 is in the offline state due to a malfunction of the network, a power loss, or the like, the visitor can be authenticated.

Also, in the case of a building or place with few passengers or visitors, or where the NFC-based gate 400 is difficult to establish an internal private network away from the authentication server 200, or to reduce network maintenance costs, The present invention can be used even when necessary, thereby reducing the cost of constructing the communication line and the maintenance cost of maintaining the network.

The foregoing description is merely illustrative of the technical idea of the present invention and various changes and modifications may be made without departing from the essential characteristics of the present invention by those skilled in the art. Therefore, the embodiments disclosed in the present invention are for illustrative purposes only and are not intended to limit the scope of the present invention, and the scope of the present invention is not limited by these embodiments.

Therefore, the scope of the present invention should be construed as being covered by the following claims rather than being limited by the above embodiments, and all technical ideas within the scope of the claims should be construed as being included in the scope of the present invention.

100: visitor side terminal 200: entrance side authentication server
300: Outgoing-side supervisory terminal 400: Outgoing-side NFC gate
110: access-only application 120: communication unit of the visitor terminal
130: Memory 140 of the visitor terminal: NFC module 140
210: authentication server control unit 220: authentication server communication unit
230: Database 240: Electronic key generation unit
250: message generation unit 260: authentication server side OTP generation unit
410: Gate control unit 420: Gate communication unit
430: NFC reader 440: breaker
450: OTP generation unit

Claims (10)

In an NFC-based access control system,
An entrance-side authentication server for authenticating the issued electronic key by issuing an electronic key to a visitor's smartphone, an administrator terminal connected to the authentication server, And an NFC gate for opening and closing the gate according to the authentication result of the server and the entrance and exit authentication server,
A smartphone of a visitor includes an access-only application for establishing communication with an access-side authentication server and executing an NFC access function; A communication unit for performing data communication with an access-side authentication server under the control of an access-only application, a memory in which an access-only application is stored, an electronic key received from the authentication server is stored, and an NFC Module,
The access-side authentication server includes a control unit for controlling an authentication operation of the access-side authentication server, a communication unit for communicating with a visitor smartphone or an administrator terminal, a database storing user's login / password information, And an electronic key generation unit for generating an NFC-based electronic key by an instruction from the terminal,
The entrance-side authentication server further includes a message generation unit. The message generation unit transmits an approval message when the visit request is approved in response to the visit request message in the visitor-side smartphone, and when the visit request message is received, Wherein the message generation unit is configured to detect a visitor whose electronic key has expired at the entrance or exit of the NFC gate under the control of the control unit or to send an expired authentication key to the outside of the building Detecting a visitor who wants to leave or a visitor who intends to enter the building with an expired authentication key, and send a notification message to the manager,
The entrance authentication server notifies the administrator terminal based on the received electronic key request when the electronic key request is received from the visitor smartphone, generates an NFC-based electronic key based on the designated authority information from the administrator terminal, The authentication information of the electronic key is stored in the database and then transmitted to the smartphone of the visitor side,
Wherein the NFC gate is configured to read an electronic key stored in a smartphone of a visitor and transmit the read electronic key to an entrance side authentication server and to open or close a gate in accordance with an authentication result from the entrance side authentication server,
In the case of an electronic key set to enable electronic key sharing from an administrator terminal, an electronic key received through an access-only application installed in a smartphone of a visitor can be copied to an access-only application installed in a smartphone of another visitor,
The access authentication server and the NFC gate are each provided with an OTP (one time password) generator. The OTP provided to the access authentication server and the NFC gate are synchronized to generate the same OTP at the same time, The NFC gate requests the smartphone of the visitor to input the OTP information when it is impossible to receive the electronic key from the smartphone of the smartphone of the user and transmit the received electronic key to the entrance side authentication server and perform authentication for the electronic key. To
NFC - based access control system.
The method according to claim 1,
The administrator terminal sets the authority information for the visitor who requested the visit,
The authority information includes access valid period information, guest number information, gate information that can be accessed, and electronic key sharing information
NFC - based access control system.
3. The method of claim 2,
The access validity period information includes at least one of a permissible access period, a permissible access time, an access count,
NFC - based access control system.
delete The method of claim 3,
The NFC gate includes a control unit for controlling the operation of the NFC gate, a communication unit for performing data communication with the authentication server under the control of the control unit, an NFC reader for reading the NFC-based electronic key of the visitor, And a circuit breaker for opening and closing the gate
NFC - based access control system.
delete delete delete delete delete

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