WO2020235918A1 - Dispositif de terminal électronique pour effectuer un processus d'authentification de connexion sur la base d'informations biométriques, et son procédé de fonctionnement - Google Patents

Dispositif de terminal électronique pour effectuer un processus d'authentification de connexion sur la base d'informations biométriques, et son procédé de fonctionnement Download PDF

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Publication number
WO2020235918A1
WO2020235918A1 PCT/KR2020/006551 KR2020006551W WO2020235918A1 WO 2020235918 A1 WO2020235918 A1 WO 2020235918A1 KR 2020006551 W KR2020006551 W KR 2020006551W WO 2020235918 A1 WO2020235918 A1 WO 2020235918A1
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WIPO (PCT)
Prior art keywords
biometric information
terminal device
electronic terminal
user
information
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PCT/KR2020/006551
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English (en)
Korean (ko)
Inventor
반영희
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Ban Young Hui
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Publication of WO2020235918A1 publication Critical patent/WO2020235918A1/fr

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
    • G06F21/31—User authentication
    • G06F21/32—User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
    • G06F21/45—Structures or tools for the administration of authentication
    • G06F21/46—Structures or tools for the administration of authentication by designing passwords or checking the strength of passwords
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
    • H04L9/0643—Hash functions, e.g. MD5, SHA, HMAC or f9 MAC

Definitions

  • the present invention relates to an electronic terminal device that performs a login authentication process based on biometric information and a method of operating the same.
  • biometric technology uses biometric features such as fingerprints, irises, retinas, and finger veins, and among them, the method of using fingerprints is authentication by comparing the user's fingerprint characteristics and the user's fingerprint characteristics previously registered in the database. It is possible and the method of using fingerprints has the advantage of being relatively convenient and safe.
  • the electronic terminal device and its operation method according to the present invention include displaying a guide window including a guide message requesting a user to input a password or biometric information when the electronic terminal device is turned on, and then within a waiting time.
  • the biometric information is received through the biometric information input device as biometric information is applied through the biometric information input device linked to the electronic terminal device, the biometric information hash value by applying the biometric information data as input to a hash function
  • the biometric information hash value for the user stored in the database is extracted, and if it is determined that the calculated biometric information hash value is the same as the extracted biometric information hash value, authentication for the user is completed. Then, the electronic terminal device is switched to an active state, which is a usable state, so that a user can safely log in through inputting biometric information.
  • a predetermined password of the user of the electronic terminal device and a preset biometric information hash value for the user correspond to each other.
  • Stored composite information storage unit when the electronic terminal device is powered on, a guide window display unit that displays a guide window including a guide message requesting the user to input a password or biometric information, and includes the guide message After the information window is displayed, when a first password input by the user is received from the user within a preset first waiting time, a password extraction unit for extracting the user's password stored in the complex information storage unit, the second 1 If it is determined that the password is the same as the extracted password, a warning message display unit that displays a warning message requesting the user to input biometric information again within a preset second waiting time, and the warning message After being displayed on the guide window, as the user applies biometric information through a biometric information input device linked to the electronic terminal device within the second waiting time, first biometric information
  • a hash calculating unit that calculates a first biometric information hash value by applying the first biometric information data as input to a preset hash function, and when the first biometric information hash value is calculated, stored in the complex information storage unit
  • the electronic terminal device After completing authentication for the user It includes an authentication completion unit that converts to an activated state that is a usable state.
  • a preset password of a user of the electronic terminal device and a preset hash value of biometric information for the user are Maintaining a correspondingly stored composite information storage unit, when the electronic terminal device is powered on, displaying a guide window including a guide message requesting the user to input a password or biometric information, the guide message After the information window including is displayed, when a first password input by the user is received from the user within a preset first waiting time, extracting the password of the user stored in the complex information storage unit, the If it is determined that the first password is the same as the extracted password, displaying a warning message on the guidance window for re-requesting the user to input biometric information within a preset second waiting time, the warning message After being displayed on the guide window, when the first biometric information data is received through the biometric information input device, as the user applies the biometric information through the biometric information input device linked to the electronic terminal device
  • the electronic terminal device and its operation method according to the present invention include displaying a guide window including a guide message requesting a user to input a password or biometric information when the electronic terminal device is turned on, and then within a waiting time.
  • the biometric information is received through the biometric information input device as biometric information is applied through the biometric information input device linked to the electronic terminal device, the biometric information hash value by applying the biometric information data as input to a hash function
  • the biometric information hash value for the user stored in the database is extracted, and if it is determined that the calculated biometric information hash value is the same as the extracted biometric information hash value, authentication for the user is completed. Then, by switching the electronic terminal device to an active state that is a usable state, it is possible to support a user to safely log in through inputting biometric information.
  • FIG. 1 is a diagram illustrating the structure of an electronic terminal device that performs a login authentication process based on biometric information according to an embodiment of the present invention.
  • FIG. 2 is a flowchart illustrating an operation method of an electronic terminal device that performs a login authentication process based on biometric information according to an embodiment of the present invention.
  • each component, functional blocks or means may be composed of one or more sub-components, and the electrical, electronic, and mechanical functions performed by each component are electronic.
  • a circuit, an integrated circuit, and an application specific integrated circuit (ASIC) may be implemented with various known devices or mechanical elements, and may be implemented separately or two or more may be integrated into one.
  • the blocks of the attached block diagram and the steps in the flowchart are computer program instructions that are mounted on a processor or memory of equipment capable of processing data such as a general-purpose computer, a special-purpose computer, a portable notebook computer, and a network computer to perform specified functions. It can be interpreted as meaning. Since these computer program instructions can be stored in a memory provided in a computer device or in a memory readable by a computer, the functions described in the blocks in the block diagram or in the steps in the flowchart are produced as a product containing the instruction means to perform this. It could be.
  • each block or each step may represent a module, segment, or part of code that contains one or more executable instructions for executing the specified logical function(s).
  • FIG. 1 is a diagram illustrating the structure of an electronic terminal device that performs a login authentication process based on biometric information according to an embodiment of the present invention.
  • an electronic terminal device 110 performing a login authentication process based on biometric information includes a composite information storage unit 111, a guide window display unit 112, a password extraction unit 113, and a warning.
  • a message display unit 114, a hash operation unit 115, a biometric information extraction unit 116, and an authentication completion unit 117 are included.
  • a preset password of the user of the electronic terminal device 110 and a preset hash value of biometric information for the user are stored in correspondence with each other.
  • information may be stored in the composite information storage unit 111 as shown in Table 1 below.
  • the guide window display unit 112 displays a guide window including a guide message requesting the user to input a password or biometric information.
  • the password extraction unit 113 stores it in the composite information storage unit 111 The password of the user is extracted.
  • the warning message display unit 114 displays a warning message requesting the user to input biometric information again within a preset second waiting time on the guide window. do.
  • the password extraction unit 113 may extract the user's password'Connection12345' stored in the complex information storage unit 111.
  • the warning message display unit 114 determines that the first password,'Connection12345', is the same as the extracted password,'Connection12345', so that the user can receive a living body within the preset second waiting time of '30 seconds'.
  • the warning message re-requesting to input information may be displayed on the guide window.
  • the hash calculating unit 115 applies the biometric information to the user through the biometric information input unit 125 linked to the electronic terminal device 110 within the second waiting time. Accordingly, when the first biometric information data is received through the biometric information input unit 125, the first biometric information hash value is calculated by applying the first biometric information data as input to a preset hash function.
  • biometrics include fingerprints, irises, faces, and veins, and behavioral characteristics include voices and signatures.
  • the biometric information extracting unit 116 extracts the biometric information hash value for the user stored in the complex information storage unit 111.
  • the authentication completion unit 117 When it is determined that the first biometric information hash value is the same as the extracted biometric information hash value, the authentication completion unit 117 is in an activated state in which the electronic terminal device 110 can be used after completing authentication for the user. Switch to
  • the second waiting time is '30 seconds'
  • the first biometric information data is'fingerprint data 1'
  • the first biometric information hash value is '64f803b710a41396zd63dca15403513'.
  • the biometric information extraction unit 116 is the biometric information hash value for the user stored in the complex information storage unit 111. '64f803b710a41396zd63dca15403513' can be extracted.
  • the authentication completion unit 117 determines that the first biometric information hash value '64f803b710a41396zd63dca15403513' is the same as the extracted biometric information hash value '64f803b710a41396zd63dca15403513', so that the electronic terminal device ( 110) can be switched to the enabled state, which is a usable state.
  • the hash calculator 115 provides biometric information that the user is linked with the electronic terminal device 110 within the second waiting time. As biometric information is not applied through the input device 125, if the first biometric information data is not received through the biometric information input device 125, the electronic terminal device 110 may be powered off.
  • the second waiting time is '30 seconds' and the first biometric information data is'fingerprint data 1'.
  • the user does not apply the biometric information through the biometric information input device 125 linked to the electronic terminal device 110 within the second waiting time of '30 seconds'. Accordingly, when'fingerprint data 1', which is the first biometric information data, is not received by the electronic terminal device 110 through the biometric information input unit 125, the hash calculator 115 turns on the electronic terminal device 110. Can be terminated.
  • the electronic terminal device 110 displays a guide window including a guide message requesting the user to input a password or biometric information, and then a preset first waiting time. If the first password input by the user is received from the user within, the password of the user stored in the complex information storage unit 111 is extracted and the first password is determined to be the same as the extracted password, After displaying a warning message re-requesting the user to input biometric information within a set second waiting time on the guidance window, the user is connected to the electronic terminal device 110 within the second waiting time.
  • biometric information is applied through the information input unit 125
  • the first biometric information data is applied as an input to a preset hash function.
  • the biometric information hash value for the user stored in the complex information storage unit 111 is extracted and it is determined that the first biometric information hash value is the same as the extracted biometric information hash value, .
  • After completing the authentication for the user by switching the electronic terminal device 110 to an active state that is a usable state, it is possible to support the user to safely log in through inputting biometric information after entering a password.
  • a situation in which the user first inputs biometric information instead of the password may be considered after the guide window including the guide message for requesting the user to input a password or biometric information is displayed.
  • the hash calculation unit 115 provides biometric information in which the user is linked with the electronic terminal device 110 within the first waiting time.
  • biometric information is applied through the input unit 125
  • the second biometric information data is received through the biometric information input unit 125
  • the second biometric information is hashed by applying the second biometric information data as input to the hash function.
  • a value can be calculated, and when the second biometric information hash value is calculated, the biometric information extraction unit 116 can extract the biometric information hash value for the user stored in the complex information storage unit 111, and , When it is determined that the second biometric information hash value is the same as the extracted biometric information hash value, the authentication completion unit 117 activates the electronic terminal device 110 in a usable state after completing authentication for the user. You can switch to the state.
  • the second biometric information data is'fingerprint data 2'
  • the second biometric information hash value is '64f803b710a41396zd63dca15403513'.
  • the biometric information extraction unit 116 may extract '64f803b710a41396zd63dca15403513', which is a biometric information hash value for the user stored in the composite information storage unit 111, and the authentication completion unit 117 may extract '64f803b710a41396zd63dca15403513' which is the second biometric information hash value.
  • the electronic terminal device 110 can be switched to an active state that is a usable state after completing authentication for the user.
  • the electronic terminal device 110 includes a matrix storage unit 118, a syndrome generation unit 119, a feedback request unit 120, a verification syndrome generation unit 121, and an authentication unit 122. ) And a log information transmission unit 123.
  • a parity check matrix corresponding to a preset generation matrix having error correction capability for a code of t (t is a natural number) bit for use in authentication of the log management server 130 is provided. Has been saved.
  • the parity check matrix is a matrix for verifying whether an error has occurred in the data received by the data receiving side when the data transmitting side transmits a codeword encoded based on a predetermined generation matrix to the data receiving side.
  • a generation matrix G of size kxn (k and n are natural numbers and n is a number greater than k)
  • the parity check matrix corresponding to the generation matrix G is'H'
  • the size of the parity check matrix H Is the size of (nk) xn, and has the same characteristics as in Equation 1 below in relation to the generation matrix G.
  • H T denotes a transpose matrix of the parity check matrix.
  • the data transmitting side generates the code word c using the generation matrix G and transmits it to the data receiving side
  • the data received at the data receiving side is called'r', and it is assumed that no error has occurred in the data r
  • the data r has the same characteristics as in Equation 2 below in relation to the parity check matrix H.
  • the data receiving side can detect whether an error exists in the data received at the data receiving side by using the parity check matrix.
  • 'S' in Equation 3 is called a syndrome, and the data receiving side calculates the syndrome based on the parity check matrix H.
  • the error e included in the received data r can be found by performing syndrome decoding to find e that satisfies the.
  • Syndrome decoding is performed only when the error correction capability of the parity check matrix is t, and when a data error occurs for bits less than t. You can find the error code e that satisfies.
  • the syndrome generator 119 randomly generates an error code having a Hamming Weight t, and calculates the error code and the parity check matrix. Based on this, a syndrome for the error code is generated.
  • the Hamming weight means the number of code values of '1' in the set of code values consisting of '0' and '1'.
  • the syndrome generator 119 may generate a syndrome for the error code based on Equation 4 below.
  • e denotes an error code of hamming weight t
  • S denotes syndrome
  • the feedback request unit 120 transmits the error code to the log management server 130 and simultaneously transmits a feedback request to the log management server 130 for a codeword into which the error code is inserted as an error.
  • the log management server 130 stores the preset generation matrix in a memory, and when the error code and the feedback request are received from the electronic terminal device 110, the It is checked whether the hamming weight of the error code is t, and if it is determined that the hamming weight of the error code is t, a random code is randomly generated, and based on the preset generation matrix stored in the memory, the A first codeword may be generated by encoding a random code, and after generating a feedback code by inserting the error code into the first codeword as an error, the feedback code may be transmitted to the electronic terminal device 110.
  • the log management server 130 may first check whether the hamming weight of the error code e is t.
  • the log management server 130 confirms that the error code e is a code normally generated and transmitted from the electronic terminal device 110, and randomly selects a predetermined random code.
  • the first codeword may be generated by encoding the random code based on the preset generation matrix stored in a memory after being generated.
  • the log management server 130 randomly generates a random code having a size of k bits, and then uses the generation matrix G to perform the following math:
  • the first codeword may be generated according to the operation of Equation 5.
  • c denotes the first codeword and r denotes the random code.
  • the log management server 130 may generate a feedback code by inserting the error code e into the first codeword c as an error according to the operation of Equation 6 below. have.
  • p means the feedback code
  • the log management server 130 may transmit the feedback code to the electronic terminal device 110.
  • the verification syndrome generation unit 121 includes a first codeword generated by the log management server 130 from the log management server 130 (the first codeword is a random code generated by the log management server 130).
  • the parity check matrix Generate a verification syndrome from the feedback code.
  • the verification syndrome generator 121 may generate the verification syndrome based on the operation of Equation 7 below. .
  • S c means the verification syndrome
  • the authentication unit 122 compares the syndrome for the error code with the syndrome for verification, and when it is determined that both syndromes match each other, it completes the authentication for the log management server 130.
  • the authentication unit 122 manages log when it is determined that the syndrome S for the error code calculated according to Equation 4 and the verification syndrome S c calculated according to Equation 7 match each other. Authentication for the server 130 may be completed.
  • the log management server 130 stores that the syndrome S for the error code calculated according to Equation 4 and the verification syndrome S c calculated according to Equation 7 coincide with each other.
  • the log management server 130 After the log management server 130 generates a codeword through a generation matrix having an error correction capability of t or less corresponding to the parity check matrix stored in the electronic terminal device 110, an electronic terminal for the generated codeword
  • the verification syndrome S c is calculated according to the calculation of Equation 8 above. Will be calculated as Is equal to the syndrome S for the error code shown in Equation 4 above.
  • the authentication unit 122 manages the log.
  • the server 130 may be authenticated as being a registered normal server.
  • the log information transmission unit 123 provides log information (the log information is for the time when the authentication for the user is completed and the electronic terminal device 110 is activated). (Meaning activation history information consisting of time information) may be generated and the log information may be transmitted to the log management server 130.
  • the log management server 130 may store the log information in a log information database.
  • the electronic terminal device 110 may be configured to be equipped with a voice support function for the disabled.
  • the electronic terminal device 110 may include a text to speech (TTS) function to notify the disabled by voice that the solution is being operated.
  • TTS text to speech
  • the electronic terminal device 110 supports OTP (One Time Password) to support a login function when the biometric information input device 125 is broken, stolen, lost, etc. It may further include functions.
  • OTP One Time Password
  • the user may receive an OTP from the OTP issuing server and log in to the electronic terminal device 110.
  • FIG. 2 is a flowchart illustrating an operation method of an electronic terminal device that performs a login authentication process based on biometric information according to an embodiment of the present invention.
  • step S210 a composite information storage unit in which a preset password of the user of the electronic terminal device and a preset hash value of biometric information for the user are stored in correspondence with each other is maintained.
  • step S220 when the electronic terminal device is powered on, a guide window including a guide message requesting the user to input a password or biometric information is displayed.
  • step S230 after the guide window including the guide message is displayed, if a first password input by the user is received from the user within a preset first waiting time, the user stored in the composite information storage unit Extract the password of
  • step S240 if it is determined that the first password is the same as the extracted password, a warning message for requesting the user to input biometric information again within a preset second waiting time is displayed on the guide window.
  • step S250 after the warning message is displayed on the guide window, as the user applies biometric information through a biometric information input device linked to the electronic terminal device within the second waiting time, the biometric information input unit When the first biometric information data is received through, the first biometric information data is applied as an input to a preset hash function to calculate a first biometric information hash value.
  • step S260 when the first biometric information hash value is calculated, the biometric information hash value for the user stored in the complex information storage unit is extracted.
  • step S270 if it is determined that the first biometric information hash value is the same as the extracted biometric information hash value, after completing authentication for the user, the electronic terminal device is converted to an active state in which the electronic terminal device is usable.
  • the operating method of the electronic terminal device is, after the warning message is displayed on the guide window, the living body in which the user is linked with the electronic terminal device within the second waiting time.
  • biometric information is not applied through an information input device and the first biometric information data is not received through the biometric information input device, powering off the electronic terminal device may be further included.
  • the operation method of the electronic terminal device includes the living body in which the user is linked with the electronic terminal device within the first waiting time after the guide window including the guide message is displayed.
  • biometric information is applied through an information input device
  • second biometric information data is received through the biometric information input device
  • the second biometric information data is applied as input to the hash function to calculate a second biometric information hash value.
  • Step when the second biometric information hash value is calculated, extracting a biometric information hash value for the user stored in the complex information storage unit, and the second biometric information hash value is the extracted biometric information hash value If it is determined that it is the same as, after completing authentication for the user, the step of converting the electronic terminal device to an active state that is a usable state.
  • the operation method of the electronic terminal device is based on a predetermined generation matrix having error correction capability for a code of t (t is a natural number) bit for use in authentication of a log management server.
  • Maintaining a matrix storage unit in which a corresponding parity check matrix is stored when the electronic terminal device is converted to an active state that is a usable state, an error code having a hamming weight t is randomly generated, and the error code and the parity Generating a syndrome for the error code based on a check matrix, transmitting the error code to the log management server and at the same time transmitting a feedback request for a code word in which the error code is inserted as an error to the log management server.
  • the step of, a first codeword generated by the log management server from the log management server (the first codeword is the preset generation matrix in which a random code generated by the log management server is previously stored in the log management server When a feedback code in which the error code is inserted as an error is received in
  • the log management server stores the preset generation matrix in a memory, and when the error code and the feedback request are received from the electronic terminal device, the error code is hamming. Check whether the weight is t, and if it is determined that the hamming weight of the error code is t, the random code is randomly generated, and the random code is generated based on the preset generation matrix stored in the memory.
  • the first codeword is generated by encoding, and the feedback code is generated by inserting the error code into the first codeword as an error, and then the feedback code is transmitted to the electronic terminal device, and the When log information is received, the log information may be stored in a log information database.
  • the method of operating the electronic terminal device for performing the biometric information-based login authentication process according to an embodiment of the present invention is the method of the electronic terminal device 110 for performing the biometric information-based login authentication process described with reference to FIG. Since it may correspond to the configuration of the operation, a more detailed description thereof will be omitted.
  • the method of operating an electronic terminal device that performs login authentication processing based on biometric information may be implemented as a computer program stored in a storage medium for execution through a combination with a computer.
  • the method of operating an electronic terminal device for performing login authentication processing based on biometric information may be implemented in the form of program commands that can be executed through various computer means and recorded in a computer-readable medium.
  • the computer-readable medium may include program instructions, data files, data structures, and the like alone or in combination.
  • the program instructions recorded on the medium may be specially designed and configured for the present invention, or may be known and usable to those skilled in computer software. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tapes, optical media such as CD-ROMs and DVDs, and magnetic media such as floptical disks.
  • -A hardware device specially configured to store and execute program instructions such as magneto-optical media, and ROM, RAM, flash memory, and the like.
  • program instructions include not only machine language codes such as those produced by a compiler, but also high-level language codes that can be executed by a computer using an interpreter or the like.
  • syndrome generation unit 120 feedback request unit
  • log information transmission unit 125 biometric information input device

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Abstract

La présente invention concerne un dispositif de terminal électronique pour effectuer un processus d'authentification de connexion sur la base d'informations biométriques, et son procédé de fonctionnement. Selon la présente invention, lorsque le dispositif de terminal électronique est mis sous tension, une fenêtre de guidage comprenant un message de guidage demandant à un utilisateur d'entrer un mot de passe ou des informations biométriques est affichée. Ensuite, lorsque l'utilisateur fournit des informations biométriques par l'intermédiaire d'un appareil d'entrée d'informations biométriques relié au dispositif de terminal électronique dans une période d'attente, et que des données d'informations biométriques sont reçues par l'intermédiaire de l'appareil d'entrée d'informations biométriques en conséquence, les données d'informations biométriques sont fournies en tant qu'entrée à une fonction de hachage pour calculer une valeur de hachage d'informations biométriques, puis une valeur de hachage d'informations biométriques concernant l'utilisateur et stockée dans une base de données est extraite. Si la valeur de hachage d'informations biométriques calculée est déterminée comme étant la même que la valeur de hachage d'informations biométriques extraite, l'authentification de l'utilisateur est achevée, et l'état du dispositif de terminal électronique passe ensuite à un état activé qui est un état utilisable. Ainsi, la présente invention peut fournir une assistance de telle sorte que l'utilisateur peut se connecter en toute sécurité par l'intermédiaire de l'entrée des informations biométriques.
PCT/KR2020/006551 2019-05-21 2020-05-19 Dispositif de terminal électronique pour effectuer un processus d'authentification de connexion sur la base d'informations biométriques, et son procédé de fonctionnement WO2020235918A1 (fr)

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CN113726742A (zh) * 2021-07-30 2021-11-30 昆山丘钛微电子科技股份有限公司 测试认证方法、装置、电子设备及介质

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KR102045488B1 (ko) * 2019-05-21 2019-11-15 반영희 생체 정보 기반의 로그인 인증 처리를 수행하는 전자 단말 장치 및 그 동작 방법
KR102131758B1 (ko) * 2019-11-19 2020-07-08 황진욱 골프장에 대한 간편 체크인 서비스를 제공하는 골프장 체크인 서비스 서버 및 그 동작 방법
KR102388333B1 (ko) * 2020-05-21 2022-04-19 (주)핀다 고객의 정보를 기초로 금융사별 대출조건 정보의 제공이 가능한 대출조건 정보 제공 서버 및 그 동작 방법
KR102602213B1 (ko) * 2021-06-23 2023-11-14 주식회사 한글과컴퓨터 2차원 코드 인식과 생체 정보 인증을 기반으로 상품에 대한 정품 인증 및 부가 정보 제공을 수행하는 전자 단말 장치 및 그 동작 방법

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