KR101639045B1 - Method and system for issuing electronic receipts - Google Patents

Method and system for issuing electronic receipts Download PDF

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Publication number
KR101639045B1
KR101639045B1 KR1020150075296A KR20150075296A KR101639045B1 KR 101639045 B1 KR101639045 B1 KR 101639045B1 KR 1020150075296 A KR1020150075296 A KR 1020150075296A KR 20150075296 A KR20150075296 A KR 20150075296A KR 101639045 B1 KR101639045 B1 KR 101639045B1
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South Korea
Prior art keywords
electronic receipt
information
signature
user
receipt
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KR1020150075296A
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Korean (ko)
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최시원
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주식회사 조이코퍼레이션
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/08—Payment architectures
    • G06Q20/12—Payment architectures specially adapted for electronic shopping systems
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/08—Payment architectures
    • G06Q20/20—Point-of-sale [POS] network systems
    • 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
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials

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  • Business, Economics & Management (AREA)
  • Engineering & Computer Science (AREA)
  • Accounting & Taxation (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • General Business, Economics & Management (AREA)
  • Strategic Management (AREA)
  • Finance (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cash Registers Or Receiving Machines (AREA)

Abstract

Discloses are a method and a system to issue electronic receipts in an off-line store. According to an aspect of the present invention, the method to issue the electronic receipts in a server device comprises: a step of generating the electronic receipts using payment information received from a POS terminal; a step of encrypting the electronic receipts using information on a signature received from the POS terminal which receives the signature which a user writes; and a step of transmitting encrypted electronic receipts to a user terminal in accordance with a phone number received from the POS terminal which receives the phone number.

Description

TECHNICAL FIELD The present invention relates to a method and system for issuing encrypted electronic receipts,

The present invention relates to a method and system for issuing an encrypted electronic receipt to a portable terminal.

 In general, when a purchaser makes a payment using a cash or a credit card after purchasing an item or using a service, the store receives a paper receipt on which payment details such as the date, item, shop name, purchase amount, And issues it. Therefore, the consumer confirms that payment is proper by receiving it, and keeps the paper receipt for refund of the future purchase.

However, the users are often unable to keep the paper receipt due to overflowing paper receipts.

In order to overcome the problem of issuing paper receipts, a method of issuing electronic receipts (electronic receipts) has been proposed. However, this method is mainly used for online transactions, that is, transactions using the Internet, and electronic receipts It is necessary to have a method.

Also, it is important to keep personal information such as card information, signature information, etc. on the receipt so that it does not leak to other people. In particular, electronic data such as electronic receipts are highly likely to be leaked to the outside by a hacking program or leaked to other people during the communication process.

Korean Patent Publication No. 10-2014-0111490 (date of publication September 19, 2014) Electronic receipt issuing processing system and method

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a method and system for issuing an electronic receipt in an offline store.

The present invention also provides an encrypted electronic receipt issuing method and system capable of enhancing security by encrypting an electronic receipt.

Other objects of the present invention will become more apparent through the following preferred embodiments.

According to an aspect of the present invention, there is provided a method of issuing an electronic receipt performed by a server device, the method comprising: generating an electronic receipt using payment information received from a POS terminal; Encrypting the electronic receipt using information about the signature received from the force terminal, the signature being input by the user; And transmitting the electronic receipt encrypted to the user terminal according to the telephone number received from the POS terminal, which has received the telephone number, and a recording medium on which the program for executing the method is recorded .

Here, the step of encrypting the electronic receipt may include extracting a feature point according to a preset reference from the signature; Generating feature information according to the feature points as an encryption key; And encrypting the electronic receipt using the encryption key.

The step of encrypting the electronic receipt may be performed by encrypting only an area corresponding to at least one of signature, card information, and money amount information described in the electronic receipt.

Also, the mobile terminal can encrypt the electronic receipt by using the information about the Wi-Fi AP corresponding to the POS terminal, and transmit it to the user terminal.

In the electronic receipt issuing method performed by the user terminal, an electronic receipt is generated in accordance with the payment information received from the POS terminal, and information on the signature received from the POS terminal, Receiving the encrypted electronic receipt from the receipt management device which encrypted the electronic receipt; Displaying a user interface for receiving a user signature; Acquiring a decryption key using a handwritten signature input from a user and decrypting the encryption of the electronic receipt using the decryption key; And displaying the electronic receipt decrypted when the decryption of the electronic receipt is successful, and a recording medium on which a program for executing the method is recorded.

Here, feature points of the handwritten signature can be extracted, and feature information according to the feature points can be generated as the decryption key.

If the signature image is compared with the handwritten signature according to the signature received from the receipt management apparatus, the feature point of the signature image is extracted if the comparison result is determined to be equal to or greater than a preset numerical value, Can be generated as the decryption key.

The method may further include performing a first decryption using information on a Wi-Fi AP searched for by a Wi-Fi function, wherein the second decryption using the handwritten signature is performed only when the first decryption is successful have.

In addition, when there are a plurality of Wi-Fi APs to be searched for by the Wi-Fi function, the first signal having the strongest signal can be selected and the first decoding can be performed.

Storing the electronic receipt according to the first decryption result when the first decryption is successful; if the re-browsing of the electronic receipt is requested in the future, the electronic receipt corresponding to the stored first decryption result is used So that the reading function can be performed.

The method may further include receiving the electronic receipt from the receipt management apparatus that generates the electronic receipt according to the payment information received from the POS terminal, the method comprising: receiving the electronic receipt from the receipt management apparatus; Displaying the electronic receipt; And encrypting and storing the electronic receipt using a signature included in the electronic receipt when the display of the electronic receipt is completed, and a recording medium on which the program for executing the method is recorded / RTI >

Displaying a user interface for receiving a handwritten signature of a user when viewing of the electronic receipt is requested; Generating a decryption key using the input handwritten signature and decrypting the encryption of the electronic receipt using the decryption key; And displaying the electronic receipt decrypted when decryption of the electronic receipt is successful.

According to another aspect of the present invention, there is provided an information processing apparatus comprising: an input device for receiving a handwritten signature from a user; A POS terminal for receiving card information and amount information; A receipt management device for generating an electronic receipt corresponding to the payment information upon receipt of settlement information including the handwritten signature, card information, and amount information from a force terminal through a communication network; And a user terminal for receiving and outputting the electronic receipt, wherein the receipt management apparatus or the user terminal encrypts the electronic receipt using the handwritten signature.

Here, the receipt management apparatus may encrypt the electronic receipt by using information on the Wi-Fi AP corresponding to the POS terminal, and transmit the encrypted second receipt to the user terminal.

According to the present invention, it is possible to easily issue an electronic receipt even in an offline shop.

In addition, according to the present invention, the security of the electronic receipt can be enhanced by encrypting the electronic receipt using the signature information of the user.

1 is a block diagram schematically illustrating an electronic receipt issuing system according to an embodiment of the present invention;
2 is a flowchart illustrating an electronic receipt issuing process according to an embodiment of the present invention.
3 is a flowchart illustrating a process of issuing an encrypted electronic receipt performed by the receipt management apparatus according to an embodiment of the present invention.
4 is a diagram illustrating a cryptographic key generation method using a signature according to an embodiment of the present invention.
5 is a flowchart illustrating an electronic receipt issuing process using double encryption performed in the receipt management apparatus according to another embodiment of the present invention.
FIG. 6 is a flowchart illustrating a process of issuing an electronic receipt performed by a user terminal according to an embodiment of the present invention. FIGS. 7 and 8 are flowcharts of an encrypted electronic receipt performed in a user terminal according to each embodiment of the present invention. Flowcharts illustrating the decoding process.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout the specification and claims. The description will be omitted.

FIG. 1 is a block diagram schematically illustrating an electronic receipt issuing system according to an embodiment of the present invention, and FIG. 2 is a flowchart illustrating an electronic receipt issuing process according to an embodiment of the present invention.

1, the overall system according to the present embodiment includes a user terminal 10, a force terminal 30, first and second input devices 40 and 45, and a receipt management device 50.

The user terminal 10 is a communication terminal used by a user, for example, a device such as a smart phone, to which a telephone number is assigned and is capable of communication using a communication network such as a mobile communication network.

The first input device 40 may be an input device for receiving a telephone number from a user, for example, a device having a mechanical button or a device having a touch screen. The second input device 45 is for receiving a signature from a user by hand, and may be a device having a touch screen, for example. In this embodiment, the first input device 40 for receiving a telephone number and the second input device 45 for receiving a signature are implemented as separate devices. However, according to another embodiment, As shown in FIG. Hereinafter, a telephone number and a signature are inputted from a user by one input device 40 for convenience of explanation.

The POS terminal 30 is for processing a payment, and includes, for example, an input means for receiving an amount of money, a card reader for reading information in the card, And communication means for transmitting the payment information to a server (for example, a payment server or the like) that is set in advance. Since the POS terminal 30 is currently used in most shops, it will be apparent to those skilled in the art that further detailed description will be omitted.

The receipt management device 50 issues an electronic receipt from the POS terminal 30 and acquires the telephone number input through the input device 40 from the POS terminal 30 And transmits the generated electronic receipt to the user terminal 10 according to the telephone number.

Referring to FIG. 2, the POS terminal 30 according to the present embodiment inputs a telephone number through the connected input device 40 and receives a telephone number by input means (for example, a touch screen or a keyboard, etc.) When the information is inputted (S10), the payment information is transmitted together with the telephone number to the receipt management device 50 coupled through the communication network (S20). The payment information may include amount information and card information (information on a credit card). Of course, in the case of cash payments other than credit card payments, the card information may be omitted or information about the cash receipt card for issuing cash receipts.

The receipt management device 50 generates an electronic receipt corresponding to the payment information received from the POS terminal 30 in step S30 and transmits the electronic receipt to the user terminal 10 according to the telephone number received from the POS terminal 30 (S40).

Accordingly, the user can make payment using his / her own credit card, etc., and receive an electronic receipt to his / her user terminal 10 when he / she inputs a telephone number.

Typically, when a card payment or the like is performed, a signature of a user is input to confirm whether the user is a normal user, and a receipt describing the input signature is issued. Accordingly, the receipt management device 50 according to the present invention reflects the signature received from the POS terminal 30 on the electronic receipt. As described above, the signature may be input by hand by the user through the input device 40, and the POS terminal 30 may transmit the information about the input signature to the receipt management device 50 as an image file .

Here, if the receipt management device 50 transmits the electronic receipt as it is to the user terminal 10, a security incident in which the electronic receipt containing the payment information including the user's signature is exposed to the outside by a hacker, a virus, There is a possibility of occurrence.

An embodiment for preventing the problem according to the present invention will be described.

FIG. 3 is a flowchart illustrating a process of issuing an encrypted electronic receipt performed by the receipt management apparatus 50 according to an embodiment of the present invention. FIG. 4 is a flowchart illustrating a process of issuing a cryptographic key using a signature according to an exemplary embodiment of the present invention. Fig.

Referring to FIG. 3, the receipt management device 50 generates an electronic receipt (S310), and encrypts the electronic receipt using information about the signature received from the force terminal 30 (S320).

Since the signature is input by hand by the user, the receipt management device 50 can receive the signature from the POS terminal 30 with the image data. Referring to FIG. 4, in accordance with an example of generating a cryptographic key using a signature, feature points of a signature, such as 420, are extracted from the signature image 410. For the convenience of understanding, for example, four points along the top, bottom, left and right endpoints of each text of the signature may be extracted as feature points. Of course, this is merely an example, and it is a matter of course that the minutiae points can be extracted by various criteria without being limited thereto. Extraction of minutiae points for identifying a signature such as a sign will be obvious to those skilled in the art and will not be described in detail.

Like the reference numeral 430, the feature information is generated using the extracted minutiae points and can be used as a cryptographic key. For example, the coordinate values of the extracted minutiae can be used (for example, the coordinate values set based on the minutiae existing at the leftmost position), or the number of minutiae points, the corresponding positions and intervals between the minutiae points, There will be.

The generated feature information may be binary data, and the electronic receipt is encrypted using the feature information as an encryption key. Cryptographic techniques for encrypting data by using specific information as an encryption key are still used in various fields, so that those skilled in the art can easily understand the detailed description.

According to an example, the electronic receipt itself may be encrypted using a cryptographic key, but it may be encrypted so that only specific information described in the electronic receipt is invisible. In other words, although the receipt itself can be output even if there is no process of decrypting the encryption on the user terminal 10 side, the specific information is only required to be decrypted to be shown. For example, it is encrypted only for at least one of signature, card information, and money amount information described in the electronic receipt.

Referring again to FIG. 3, the receipt management device 50 provides the electronic receipt encrypted by the encryption key generated using the signature to the user terminal 10 (S330).

According to the present embodiment, as the electronic receipt is transmitted to the user terminal 10, security incidents in which the card information, signature information, and the like are leaked due to leakage of the receipt in the communication process can be prevented.

According to another embodiment, the electronic receipt may be double encrypted.

5 is a flowchart illustrating a process of issuing an electronic receipt using the double encryption performed by the receipt management device 50 according to another embodiment of the present invention.

Referring to FIG. 5, the receipt management device 50 generates an electronic receipt (S510) and performs a first encryption process using the access point (AP) information corresponding to the POS terminal 30 (S520). For example, it is possible to directly receive AP information from the POS terminal 30 (that is, receive information on a WiFi AP provided in a shop where the POS terminal 30 is located) May be acquired and stored. In addition, each Wi-Fi AP has its own unique information. For example, a MAC address can be used, and all or part of the MAC address is used as a cryptographic key.

After performing the first encryption, the receipt management device 50 performs the second encryption using the signature received from the POS terminal 30 at step S530 and provides the second encryption to the user terminal 10 at step S540. Since the second encryption using the signature has been described above, redundant description is omitted.

The user terminal 10 receiving the double-encrypted electronic receipt decrypts using the retrieved AP information and the handwritten signature input from the user. The processing procedure for this will be described later with reference to the related drawing (FIG. 8).

Hereinafter, an electronic receipt issuing process performed in the user terminal 10 will be described in detail.

FIG. 6 is a flowchart illustrating a process of issuing an electronic receipt performed by a user terminal according to an embodiment of the present invention. FIGS. 7 and 8 are flowcharts of an encrypted electronic receipt performed in a user terminal according to each embodiment of the present invention. And a decoding process.

6, when the user terminal 10 receives the encrypted electronic receipt (S610), the user terminal 10 provides a user interface (UI) for receiving a signature from the user (S620). For example, One side can display a message informing reception of the electronic receipt and the other side can display a field in which user's signature can be inputted.

In operation S630, the encrypted electronic receipt is decrypted using a user signature (hereinafter referred to as a handwritten signature) input by handwriting through the user interface as described above. Here, the decryption key used for decryption is decrypted using a handwritten signature in the same manner as described with reference to Fig. 4, that is, in the same manner as the method in which the receipt management device 50 generates a cryptographic key using a signature Can be generated.

In operation S640, if the decryption is successfully performed, the user terminal 10 outputs an electronic receipt and displays the decrypted electronic receipt on the screen in operation S650. . Otherwise, if the decoding fails, the electronic receipt output may be error-processed (S655). Alternatively, it is possible to output the decrypted electronic receipt immediately after the decryption process without the procedure of S640. In this case, if the decryption key is not correctly decrypted, a proper electronic receipt will not be outputted.

Up to now, a description has been given mainly of a method of encrypting and transmitting the electronic receipt in the receipt management device 50 and decrypting the encryption in the user terminal 10. Although not shown in the drawings, according to the embodiment different from the present embodiment, the receipt management device 50 provides the electronic receipt to the user terminal 10 without encryption, and the user terminal 10 directly transmits the electronic receipt After encryption is performed using a signature, it may be stored and managed. According to this, by encrypting and managing the electronic receipt, personal information can be prevented from being leaked even if the electronic receipt is leaked to the outside by a virus or the like in the future.

According to an example, when the first electronic receipt is received, the user terminal 10 displays the received electronic receipt on the screen so that the user can confirm the electronic receipt. When the electronic receipt is completed, the electronic terminal 10 stores the electronic receipt after encryption using the signature, If re-browsing of the electronic receipt is requested, the processes after S620 may be performed.

6, the encryption key is based on a signature by the user using the input device 40 connected to the POS terminal 30, and the decryption key is used to sign the handwritten signature entered by the user into the user terminal 10 . It is not easy to enter each signature exactly the same, even for the same user. Therefore, extraction of feature points and generation of feature information using the feature information should be used to increase the probability that the extraction of feature information by two signatures becomes equal to each other.

7 according to another embodiment for solving this in a different way, the user terminal 10 receives the signature of the user input by the input device 40 connected to the POS terminal 30 from the receipt management device 50, (S710), and determines whether the signature is identical or not (S720). The identity of the user's signature input to the input device 40 and the signature of the user input to the user terminal 10 itself. The determination of identity between images may be performed in various ways. For example, if two images match a certain number (e.g., 90%, etc.), they can be judged to be the same.

As a result of the determination in S720, if they match, the user terminal 10 extracts the feature information of the signature image and uses it as a decryption key. That is, the user terminal 10 extracts the feature information of the signature image received from the receipt management device 50, rather than feature information of the handwritten signature input directly from the user, and uses the feature information as a decryption key. According to this, since the feature information is extracted from the same data, the probability of decryption failure can be eliminated even when the signature image and the handwritten signature are equal to or more than a certain value.

Referring to FIG. 8 illustrating another decoding method, when the electronic receipt is received, the user terminal 10 searches for a nearby AP by a Wi-Fi function (S810).

Then, the user terminal 10 performs a first decryption on the encryption of the electronic receipt using information about the discovered AP (for example, a MAC address, etc.) (S820). For example, information on which one or the most received signal strength is selected by the user among the searched APs may be used.

The user terminal 10 determines whether the decryption succeeds after the first decryption (S830), and performs decryption (second decryption) using the handwritten signature from the user as described above (S840). Of course, if the first decoding is performed, error processing and decryption failure processing can be performed.

Here, if the first decryption is successful, the user terminal 10 may store the first decrypted electronic receipt, and may perform only the second decryption when re-browsing the corresponding electronic receipt. When receiving the first electronic receipt, the user is located at the location of the AP corresponding to the POS terminal 30, and there is a high probability that the user is located at a location other than the location.

According to another embodiment, only the first encryption is performed at first, and the electronic receipt is outputted even if only the first decryption is performed. In the subsequent re-reading, the second encryption is performed to proceed only the second decryption. In this case, the first encryption may be performed directly at the receipt management device 50 or the user terminal 10, and in the case of the second encryption, it may be performed at the user terminal 10, It will be self-evident.

The above-described method for issuing an electronic receipt according to the present invention can be implemented as a computer-readable code on a computer-readable recording medium. The computer-readable recording medium includes all kinds of recording media storing data that can be decoded by a computer system. For example, it may be a ROM (Read Only Memory), a RAM (Random Access Memory), a magnetic tape, a magnetic disk, a flash memory, an optical data storage device, or the like. In addition, the computer-readable recording medium may be distributed and executed in a computer system connected to a computer network, and may be stored and executed as a code readable in a distributed manner.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It will be understood that various modifications and changes may be made.

10: User terminal
30: POS terminal
40: first input device
45: second input device
50: receipt management device

Claims (15)

A method for issuing an electronic receipt performed by a server device,
Generating an electronic receipt using payment information received from the POS terminal;
Encrypting the electronic receipt using information about a Wi-Fi AP corresponding to the POS terminal as an encryption key;
Encrypting the electronic receipt using feature information according to a minutiae extracted according to a preset reference in the signature received from the force terminal, the signature being written by a user, as an encryption key; And
And transmitting the encrypted electronic receipt to a user terminal according to the telephone number received from the POS terminal having received the telephone number,
The user terminal decrypts the second encryption using the minutiae of the handwritten signature input by the user as the second decryption key, and then decrypts the first encryption using the WiFi information to be searched as the first decryption key, And encrypts the electronic receipt using the second decryption key as an encryption key when storing the encrypted electronic receipt.
delete The method according to claim 1,
Wherein the first encryption and the second encryption are performed by:
And encrypting only the area according to at least one of signature, card information, and money amount information described in the electronic receipt.
delete delete delete delete delete delete delete delete delete A recording medium in which a program for carrying out the method of claim 1 or 3 is recorded so as to be readable by a computer.
An input device for receiving a handwritten signature from a user;
A POS terminal for receiving payment information including card information, amount information, and signature written by the user;
Encrypts the electronic receipt by using the information on the Wi-Fi AP corresponding to the POS terminal as an encryption key, communicates with the POS terminal to generate an electronic receipt corresponding to the payment information, A receipt management device for secondly encrypting the electronic receipt using characteristic information according to a minutiae extracted according to a preset reference as an encryption key; And
When receiving the electronic receipt from the receipt management apparatus, decrypting the second encryption using the minutiae of the handwritten signature input from the user as the second decryption key, and then using the detected WiFi information as the first decryption key, And a user terminal for decrypting the encrypted data to output the electronic receipt and encrypting the electronic receipt using the second decryption key as an encryption key when storing the encrypted receipt.
delete
KR1020150075296A 2015-05-28 2015-05-28 Method and system for issuing electronic receipts KR101639045B1 (en)

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WO2019147054A1 (en) * 2018-01-26 2019-08-01 Samsung Electronics Co., Ltd. Electronic device and method for supporting automatic wi-fi connection with enhanced security method when making electronic wallet payment
KR20220124406A (en) 2021-03-03 2022-09-14 주식회사 더리얼마케팅 Blockchain-based data backup and verification device

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KR20120049802A (en) * 2010-11-09 2012-05-17 김현수 Method for issuing electronic receipt
JP2013037455A (en) * 2011-08-05 2013-02-21 Nec Computertechno Ltd Receipt encryption system, receipt encryption method, and receipt encryption program
KR20140111490A (en) 2013-03-11 2014-09-19 에스케이플래닛 주식회사 System and Method for issuing an electronic receipt

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Publication number Priority date Publication date Assignee Title
KR20040108234A (en) * 2003-06-17 2004-12-23 한명국 Wireless credit card settlement method and system using electron-signature
KR20050106209A (en) * 2004-05-04 2005-11-09 조배수 Billing system according to ordering by telephone and method thereof
KR20120049802A (en) * 2010-11-09 2012-05-17 김현수 Method for issuing electronic receipt
JP2013037455A (en) * 2011-08-05 2013-02-21 Nec Computertechno Ltd Receipt encryption system, receipt encryption method, and receipt encryption program
KR20140111490A (en) 2013-03-11 2014-09-19 에스케이플래닛 주식회사 System and Method for issuing an electronic receipt

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019147054A1 (en) * 2018-01-26 2019-08-01 Samsung Electronics Co., Ltd. Electronic device and method for supporting automatic wi-fi connection with enhanced security method when making electronic wallet payment
CN111656380A (en) * 2018-01-26 2020-09-11 三星电子株式会社 Electronic device and method for supporting automatic Wi-Fi connectivity with enhanced security methods when making electronic wallet payments
US11042868B2 (en) 2018-01-26 2021-06-22 Samsung Electronics Co., Ltd Electronic device and method for supporting automatic Wi-Fi connection with enhanced security method when making electronic wallet payment
US11556916B2 (en) 2018-01-26 2023-01-17 Samsung Electronics Co., Ltd Electronic device and method for supporting automatic Wi-Fi connection with enhanced security method when making electronic wallet payment
CN111656380B (en) * 2018-01-26 2024-01-16 三星电子株式会社 Electronic device and method for supporting automatic Wi-Fi connection with enhanced security methods when making e-wallet payments
KR20220124406A (en) 2021-03-03 2022-09-14 주식회사 더리얼마케팅 Blockchain-based data backup and verification device

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