KR20190132802A - System and method for used item commercial transations - Google Patents

Abstract

According to the present invention, a method for trading used articles comprises: a step in which a seller registers seller information in a used article trade server; a step in which the registered seller photographs an image including a picture or a video of used articles to be sold through a seller terminal; a step in which the seller stores, in a seller terminal, location information for photographing the image and time information of a photographing time point when photographing the image; a step in which the seller transmits the photographed image to the used article trade server together with the image location information and the time information stored in the seller terminal; a step of confirming whether the location information and the time information of the image transmitted through the seller are identical to an actual location and time and authenticates the same the used article trade server; a step of storing trade information including the location information and time information for a used article which has completed authentication in the used article trade server; a step in which a buyer finds out a desired used article by searching for trade information stored in the used article trade server; a step in which the buyer determines purchase of the found used article and pays a price; a step in which the used article trade server notifies the determination of purchase and shipping address to a seller of the used article; a step in which the seller who is notified from the used article trade server delivers the used article to the buyer; a step in which the buyer who collects the used article checks the used article and finally determines whether to purchase the used article; and a step in which a payment is paid to the seller in the used article trade server if the final purchase of the used article is determined by the buyer.

Description

Secondhand goods trading system and method for preventing fraud {System and method for used item commercial transations}

The present invention relates to a second-hand goods trading system and method, and more particularly, when a second-hand goods seller photographs an image of a second-hand goods, information about a place where the image is taken and a time of photographing the second-hand goods transaction server The present invention relates to a second-hand goods trading system and method that can be used to deal with a buyer who wants to buy second-hand goods after being certified and to prevent the provision of information on fake goods and establish a clean trade order.

Recently, as shopping malls that enable people to buy and sell used goods through the Internet have been activated, many users can conveniently shop online using their PCs or smartphones. In addition, Internet transactions such as second-hand goods have been activated, through which used goods used by oneself can be sold to other users, and second-hand goods can be bought cheaply. Such used shopping malls exist in various forms, from a shopping mall that allows a user to register and sell a product in a system, such as an auction or a G market, to a simple bulletin board.

However, in the case of registering an item for sale from the seller's point of view, the second-hand goods transaction becomes difficult, for example, to attach several photos or prove the seller's personal information to some extent in order to prove that the item is a normal item. Despite these efforts, the number of victims of secondhand goods fraud is increasing. In particular, the most common type of fraud is that people sell used goods they don't have by taking pictures of others.

Due to these problems, there is a need for a method and a system that can be used to trade used goods fairly without being scammed, but there is currently no solution to solve this problem.

Korea Patent Registration No. 10-1078767

An object of the present invention is a buyer who wants to buy used goods after providing the used goods trading server with information about the place where the video is taken and when the video is taken when the used goods seller photographs the used goods. It is to provide a second-hand goods trading system and method that can prevent the provision of information on fake goods at the source and establish a clean trading order.

Used goods trading method according to the present invention comprises the steps of installing an application for used goods trading on the seller terminal capable of photographing used goods sellers; Registering, by the used goods seller, the seller information on the used goods trading server through the application; Storing the location information of the image and time information of the time of capturing the image in the seller terminal when the seller photographs the image; Transmitting the image photographed by the seller to the used goods transaction server together with image position information and time information stored in the seller terminal; Checking, by the used goods transaction server, whether location information and time information of the image received through the seller match the actual location and time, and authenticating the same; Storing transaction information including location information and time information on the used goods that have been authenticated in the used goods trading server; A purchaser searching for transaction information stored in the used goods trading server to find a desired used goods; Determining the purchase of used goods found by the buyer and paying the price; Informing the seller of the used goods in the used goods trading server of the purchase decision fact and the delivery address information; Seller notified from the used goods trading server delivers used goods to a buyer; The buyer receiving the used goods is determined whether the final purchase after the used goods check; And when the final purchase of the used goods from the buyer is determined, the used goods transaction server paying the payment price to the seller.

In addition, the purchaser searches for the transaction information stored in the used goods trading server to find the desired used goods; the transaction information searched by the buyer within a predetermined distance set by the buyer with respect to the area where the buyer is located Only the transaction information of a seller located is exposed, and to find a seller located within the predetermined distance, the location information of the seller stored when the image is taken by the terminal of the seller is used, and the transaction information of the seller located within a predetermined distance set by the buyer. Is not the upload time of the transaction information, but the shooting time of the image included in the transaction information is shown in order from the most recent transaction information from the point of time when the buyer searches, and to determine the shooting time of the image included in the transaction information On the seller's terminal When taking a picture may use the time information stored in the recording time of sale items.

In addition, the second-hand goods transaction server checks whether the location information and the time information of the image transmitted through the seller and the actual location and time and verifying the authentication; when the seller is running the application for authentication installed in the image shooting terminal Receiving current location information obtained from the image photographing terminal of the seller; Transmitting a plurality of candidate position identification target images corresponding to the received position information to the image photographing terminal of the seller; Providing a location guide of the selected object image to the image capturing terminal of the seller when any one of the plurality of candidate position identifying object images is selected by the image capturing terminal of the seller; Receiving a primary image, which is an image of an object to be checked by an image capturing terminal of the seller, moved to a place where the selected object is located according to the position guide; Comparing the received primary image with the candidate image for identifying the candidate position, if the degree of image matching is greater than or equal to a certain threshold, a first authentication code is issued to the image capturing terminal of the seller. And transmitting the authentication rejection message to the.

In addition, the step of authenticating whether the image matches the purchase information through the authentication procedure for the location and time of the image provided by the seller; the camera is activated only when the first authentication code is received and the first authentication If the code is not received, the camera cannot be photographed. If the seller's image capturing terminal receives the first authentication code and the camera is activated, the image is captured by the seller's image capturing terminal to correspond to the current location information. Receiving a secondary image, which is an image of an object or a place to be traded by the buyer existing in a range of positions; If the reception time of the secondary image is determined that a predetermined time has elapsed from the first authentication code issuing time, and if a predetermined time has elapsed, the authentication rejection message is not recorded without performing authentication on the secondary image. If the predetermined time has not elapsed, the secondary image is extracted from the secondary image by time information indicating the time when the secondary image was captured and not the time transmitted from the seller terminal. Comparing the extracted time information with the server time which is the time when the secondary image is received by the transaction server, and if the difference is within an error range, issuing a second authentication code to the image capturing terminal of the seller; The issued second authentication code is included in the secondary image or uploaded to the transaction server by the image photographing terminal of the seller separately from the secondary image, so that the terminal of the buyer connected to the transaction server is authenticated secondly. And accessing the transaction server through a code, providing the authenticated location information and time information to the purchaser's terminal.

The method may further include storing transaction information including location information and time information of the authenticated used goods in the used goods trading server; displaying a map screen displaying a map on the terminal screen of the buyer; Displaying, by a marker, local information on the location of the seller on the displayed map screen; Displaying the transaction information including a specific position and a specific time corresponding to the marker input by the seller when the marker is selected by the buyer; And confirming, by the buyer, the displayed transaction information and making a purchase request.

According to the present invention, when a second-hand goods seller photographs a second-hand goods, a buyer who wants to purchase second-hand goods after providing the information on the place where the video is taken and the time when the video is taken is used and authenticated By proceeding with the transaction, it is possible to provide a second-hand goods trading system and method that can fundamentally prevent the provision of information on fake goods and establish a clean trading order.

1 is a view showing a transaction process according to the second-hand goods trading method according to the present invention.
2 is a view showing a second-hand goods trading system according to the present invention.
3 is a view showing the internal configuration of the second-hand goods seller terminal shown in FIG.
4 is a view showing the internal configuration of the second-hand goods buyer terminal shown in FIG.
FIG. 5 is a diagram illustrating a process of transmitting a photographed image to an authentication unit of a used goods transaction server in a used goods seller terminal according to the present invention.
6 is a view showing an authentication process in the second-hand goods transaction server authentication unit according to the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.

It is noted that the figures are schematic and not drawn to scale. The relative dimensions and ratios of the parts in the figures have been exaggerated or reduced in size for clarity and convenience in the figures and any dimensions are merely exemplary and not limiting. And the same reference numerals are used to refer to similar features in the same structure, element or part shown in more than one figure.

Embodiments of the invention specifically illustrate ideal embodiments of the invention. As a result, various modifications of the drawings are expected. Thus, the embodiment is not limited to the specific form of the illustrated region, but includes, for example, modification of the form by manufacture.

1 is a view showing a transaction process according to the second-hand goods trading method according to the present invention.

2 is a view showing a second-hand goods trading system according to the present invention.

3 is a view showing the internal configuration of the second-hand goods seller terminal shown in FIG.

4 is a view showing the internal configuration of the second-hand goods buyer terminal shown in FIG.

Referring to FIG. 2, a used goods trading system according to the present invention includes a used goods trading server 100, a seller terminal 200, and a purchaser terminal 300. Here, the used goods transaction server again includes a wireless communication unit 110, the control unit 120, the memory unit 130, the authentication unit 140 and the payment unit 150.

The used goods transaction server 100 communicates with both the seller terminal 200 and the purchaser terminal 300 using the wireless communication unit 110.

The used goods transaction server 100 registers seller information through the seller terminal 200 and stores it in the memory unit 130. After that, transactions are carried out while communicating with the buyer and the seller so that second-hand goods transactions can be made between the buyer and the seller.

The authentication unit 140 serves to verify whether the used goods corresponding to a specific location and time at the time of photographing the used goods provided by the seller, and the payment unit 150 purchase price if the buyer wants the final purchase It serves to make the payment. The payment unit 150 services the payment of used goods between the buyer and the seller can be made online, and uses an electronic payment system. The electronic payment system may include a payment gateway (PG) server, and the PG server provides a service for performing a transaction with a financial institution on the Internet. PG server provides a variety of payment services such as credit card, bank transfer, mobile phone payment, ARS payment instead.

As shown in FIG. 3, the seller terminal 200 according to the present invention includes a first wireless communication unit 210, a first control unit 220, a first input unit 230, a first photographing unit 231, and first information. The input unit 232 includes a first display unit 240, a first memory unit 250, a first location unit 260, and a first time unit 270.

The first wireless communication unit 210 may include a module capable of connecting one or more networks, and may perform wireless communication with the used goods transaction server 100. That is, the first wireless communication unit 210 may transmit and receive image information with the wireless communication unit 110 of the second-hand goods transaction server 100.

The first controller 220 is a part that controls the components of the seller terminal 200 as a whole, and includes a first input unit 230, a first photographing unit 231, a first information input unit 232, and a first display unit ( 240, the first memory unit 250, the first location unit 260, and the first time unit 270 may be controlled.

In addition, the first controller 220 obtains information on the location of the seller terminal 200 through the first location unit 260 and stores the information on the location of the seller terminal 200 together with the image content. Information about a video content production time of 200 is also obtained and stored together with the video content.

The first input unit 230 may photograph second-hand goods through the first photographing unit 231, input them to the seller terminal, and input seller information to the seller terminal through the first information input unit 232.

The first memory unit 250 may store the photographed used goods, and the stored used goods may be transmitted to a used goods trading server for a transaction.

As shown in FIG. 4, the purchaser terminal 300 according to the present invention includes a second wireless communication unit 210, a second control unit 220, a second input unit 230, a second photographing unit 231, and second information. The input unit 232 includes a second display unit 240, a second memory unit 250, a second location unit 260, and a second time unit 270.

Compared to the components forming the seller terminal, the components forming the buyer terminal may have different roles depending on the seller and the buyer, but basically the same functions are performed.

That is, the seller terminal 200 all have a digital camera, GPS (location information) and communication functions, and stores and executes an application for image data authentication, and the digital camera, GPS (location information) and communication functions through the application. Activate.

When the seller terminal activates and photographs the digital camera through the application, GPS location information and time information at the time of shooting is generated, and the seller terminal transmits image data, location information and time information by camera shooting to the authentication unit through a communication network.

 The seller terminal sends the image data, location information and time information to the authentication unit, and receives an authentication code or an authentication rejection message from the authentication unit. The seller terminal may be a mobile terminal such as a smartphone or a tablet PC, but a general digital camera capable of installing an application and having a Wi-Fi communication function is also possible.

As shown in Figure 1, the second-hand goods trading method according to the present invention is the second-hand goods sellers to install the application for used goods trading on the seller terminal capable of taking pictures and the used goods sellers used goods trading through the application Registering the seller information to the server (S100). The used goods trading server can confirm the identity of the seller by registering the seller's information in advance, thereby increasing the stability of the transaction.

Here, in step (S105), the registered seller photographs a video including a picture or a video of used goods to be sold through a seller terminal, so the second-hand goods transaction server needs to be authenticated. Shooting is done using an application that communicates with the commodity trading server.

According to an embodiment of the present invention, when the seller photographs the image, storing the location information of photographing the image and time information of the photographing time point in the seller terminal (S110), and the image position information stored in the seller terminal of the image photographed by the seller. And transmitting to the used goods trading server together with time information (S115), wherein the used goods trading server checks whether the location information and the time information of the image transmitted through the seller match the actual location and time, and authenticates the same. (S120). Description of the authentication method will be described later.

 In the step of storing transaction information including the location information and time information on the used goods that have been authenticated in the used goods trading server (S125), the information on the location and the point at which the image is taken is provided as well as the image of the used goods. This prevents used goods sellers from providing false photographs to the trading server. This procedure can prevent many damages of used trade fraud.

 In the step S130 where the buyer searches for transaction information stored in the used goods trading server to find a desired used goods, the buyer may perform a more efficient search by using the location information and time information when the image is taken.

Specifically, in the step of the buyer to search the transaction information stored in the used goods trading server to find a desired used goods; the transaction information searched by the buyer is a predetermined distance set by the buyer centered around the buyer location Only the transaction information of the seller located within the exposure is exposed, and the location information of the stored seller is used when the image is taken by the terminal of the seller to find the seller located within the predetermined distance.

In addition, the transaction information of the seller located within a predetermined distance set by the buyer is not the time of uploading the transaction information again, the shooting time of the image included in the transaction information is shown in order from the most recent transaction information from the time the buyer searches In order to determine the shooting time of the image included in the transaction information, when using the time information at the time of photographing the second-hand goods stored when the video is taken in the terminal of the seller not only showing the image of the second-hand goods, but for a smooth transaction You can check the current status of the seller's location and the status of used goods through the shooting information to prevent fraud and to make a good deal.

The present invention determines the purchase of the used goods found by the buyer and paying the price (S135). (S140) informing the seller of the used goods in the used goods trading server and the purchase decision facts and the delivery address information, the seller receiving the notification from the used goods trading server delivers the used goods to the buyer (S145), The buyer receiving the used goods is determined whether the final purchase is made after confirming the used goods (S150) and when the final purchase of the used goods is determined from the buyer, the used goods transaction server pays the payment to the seller. It includes the step (S155).

In the present invention, if the payment price is paid to the seller first, there is a risk that the seller delays the used goods, and when the buyer makes a final purchase decision after confirming the goods, the system establishes a system so that the payment price is delivered to the seller at that time. It was.

5 is a diagram illustrating a process of transmitting a photographed image from the second-hand goods seller terminal to the authentication unit of the second-hand goods trading server according to the present invention.

6 is a view showing an authentication process in the second-hand goods transaction server authentication unit according to the present invention.

The second hand goods transaction server checks whether the location information and the time information of the image transmitted through the seller match the actual location and time, and authenticates the information; when the seller executes an authentication application installed in the image photographing terminal, the Receiving current location information acquired from an image photographing terminal of a seller; Transmitting a plurality of candidate position identification target images corresponding to the received position information to the image photographing terminal of the seller; Providing a location guide of the selected object image to the image capturing terminal of the seller when any one of the plurality of candidate position identifying object images is selected by the image capturing terminal of the seller; Receiving a primary image, which is an image of an object to be checked by an image capturing terminal of the seller, moved to a place where the selected object is located according to the position guide; Comparing the received primary image with the candidate image for identifying the candidate position, if the degree of image matching is greater than or equal to a certain threshold, a first authentication code is issued to the image capturing terminal of the seller. And transmitting the authentication rejection message to the.

Checking, by the used goods trading server, whether the location information and the time information of the image transmitted through the seller match the actual location and time, and authenticating the same; the camera is activated only when the first authentication code is received. 1 If the authentication code is not received, the camera cannot be photographed. If the camera for activating the camera for receiving the first authentication code by the seller's video recording terminal is photographed by the video recording terminal for the seller, the current location information Receiving a secondary image, which is an image of an object or a place to be traded by the buyer existing in a location range corresponding to; If the reception time of the secondary image is determined that a predetermined time has elapsed from the first authentication code issuing time, and if a predetermined time has elapsed, the authentication rejection message is not recorded without performing authentication on the secondary image. If the predetermined time has not elapsed, the secondary image is extracted from the secondary image by time information indicating the time when the secondary image was captured and not the time transmitted from the seller terminal. Comparing the extracted time information with the server time which is the time when the secondary image is received by the transaction server, and if the difference is within an error range, issuing a second authentication code to the image capturing terminal of the seller; The issued second authentication code is included in the secondary image or uploaded to the transaction server by the image photographing terminal of the seller separately from the secondary image, so that the terminal of the buyer connected to the transaction server is authenticated secondly. And accessing the transaction server through a code, providing the authenticated location information and time information to the purchaser's terminal.

Storing transaction information including location information and time information on the used goods that have been authenticated in the used goods trading server; displaying a map screen displaying a map on a terminal screen of the buyer; Displaying, by a marker, local information on the location of the seller on the displayed map screen; Displaying the transaction information including a specific position and a specific time corresponding to the marker input by the seller when the marker is selected by the buyer; And confirming, by the buyer, the displayed transaction information and making a purchase request.

As shown in FIG. 5, when the seller terminal 200 takes a picture using a camera while an application for image data authentication is executed (S200), the seller terminal 200 generates GPS location information and time information at the time of taking a picture (S210). ).

The seller terminal 200 combines and encrypts the image file created by the camera shooting, the location information and the time information generated at the moment of shooting (S220).

The seller terminal 200 temporarily stores the encrypted data and then checks the network connection state and transmits the encrypted data to the authentication unit 140 of the image data transaction server (S230). If the network is not connected or unstable, the encrypted data is stored in the internal memory, and the network connection status is periodically checked and retransmitted.

As such, when the seller terminal 200 sends the encrypted data to the authentication unit 140 of the image data transaction server, the authentication unit 140 of the image data transaction server receives the image data, the location information, and the time information to perform the authentication process. Do this.

As shown in FIG. 6, the seller terminal 200 first transmits the photographed picture, location information, and time information to the authenticator 140 of the image data transaction server.

When the seller terminal 200 executes the application for authentication (S30), the seller terminal 200 transmits the location information obtained by obtaining the current location information through the GPS module to the authentication unit 140 of the image data transaction server. (S32).

When receiving the location information from the seller terminal 200, the authentication unit 140 of the image data transaction server transmits the recordable candidate position identification object information corresponding to the location information to the seller terminal 200 (S34). The authentication unit 140 of the image data transaction server includes a database that stores imageable object identification information corresponding to the location information. The location information included in the predetermined range may correspond to the same location confirmation object.

For example, when the seller is in a building near the exit 4 of Gangnam Station, the seller executes the application for authentication of the seller terminal 200, and exits Gangnam Station Exit 4, for example. GPS information corresponding to a location is transmitted to the authentication unit 140 of the image data transaction server, and the authentication unit 140 of the image data transaction server extracts a plurality of location confirmation objects stored in correspondence with the GPS information from a database. To the seller terminal 200.

The photograph of the object is an object that the seller can take near Gangnam Station Exit 4, and it can be Gangnam Station Exit 4, a cafe on the first floor of the Daereong building, and a bus stop.

As such, when the object image for position confirmation is displayed on the screen of the seller terminal 200, and the seller selects one of the object images, the selected object image is enlarged and displayed while guiding the location of the selected object. The map to say is displayed.

If the seller sees the map guiding the object's location, confirms the shooting location, and judges that the object can be taken, press the camera button, and if it is difficult or unable to determine the location, press the back button to display the object picture for re-locating the screen. You can go back and select another object picture.

When the camera button is pressed, the camera is activated so that the seller terminal 200 enters a shooting mode, and the seller shoots a video similar to a photograph of the object for positioning.

When the seller takes a picture by pressing the shooting button, the picture taken is displayed as a thumbnail picture, and the picture is enlarged by pressing the thumbnail picture.

If you determine that the picture taken by the seller is similar to the location object picture, you can press the send button and if you do not like the picture taken or are different from the location object picture, you can press the retake button to return to the shooting mode.

As such, when the seller moves to the location of the object shown in the object image for checking the location and makes a first shot on the object (S36), the seller terminal 200 displays the first image photographed on the image data transaction server. It transmits to the authentication unit 140 (S38).

Next, when the authentication unit 140 of the image data transaction server receives the primary image picture from the seller terminal 200, the authentication unit 140 performs primary authentication by comparing the object image for confirmation of location with the primary image picture corresponding to the location information. (S40).

Comparing the primary image picture and the target picture for confirming the location corresponding to the location information, if the comparison result value is less than a specific threshold, the authentication failure is transmitted and the authentication rejection message is transmitted to the seller terminal 200 (S42). If it is equal to or more than the specified threshold, the authentication is successful, and the first authentication code is transmitted to the seller terminal 200 (S44).

When the seller terminal 200 receives the authentication rejection message from the authentication unit 140 of the image data transaction server, the application for authentication may be forcibly terminated or the screen may return to the object confirmation screen.

When the seller terminal 200 receives the first authentication code from the authenticator 140 of the image data transaction server, the seller terminal 200 activates the camera and enters the photographing mode again. After that, the seller performs the second shooting (S46). In the second shooting, the seller photographs the product or the goods to be traded or the state of a specific region.

When the seller takes a second picture of the product or the object or the state of a specific region, the seller terminal 200 transmits the taken second picture to the authentication unit 140 of the image data transaction server (S48).

The authenticator 140 of the image data transaction server may determine whether the second authentication is performed by determining whether a reception time of the second video image has elapsed from the first authentication code issuing time.

If the reception time of the secondary image picture is a predetermined time elapsed from the time of issuing the first authentication code, the authentication unit 140 of the image data transaction server does not perform the secondary authentication on the secondary image picture and sends an authentication rejection message. The second authentication is performed only when a predetermined time has not passed.

As such, comparing the receiving time of the second video photograph with the time of issuing the first verification code may allow the seller to verify the location from the original location and then return to the original location to capture the status of the transaction at the original location. Because there is.

Since the candidate location object may exist within a 5-minute walk from the seller's current location, the time difference used to compare the reception time of the second video photograph with the time of issuing the first verification code is set to 30 minutes or less. It is preferable.

The secondary image photograph may include time information on which the secondary photographing is performed, and may further include a first authentication code authenticated by the authenticator 140 of the image data transaction server with respect to the current position.

When the second image is received from the seller terminal 200, the authentication unit 140 of the image data transaction server performs second authentication (S50).

In the second authentication, the second shooting time is compared with the time of the authentication unit 140 of the image data transaction server, and if the difference is out of a predetermined error range, the authentication failure is transmitted and an authentication rejection message is transmitted (S52). If S is within the predetermined error range, the authentication succeeds and the second authentication code is transmitted (S54).

The above-described embodiments are to be understood in all respects as illustrative and not restrictive, the scope of the present invention being indicated by the following detailed description, which is set forth in the claims below, and the meaning and scope of the claims and their All changes or modifications derived from equivalent concepts should be construed as being included in the scope of the present invention.

100: used goods trading server
110: wireless communication unit
120: control unit
130: memory unit
140: authentication unit
150: payment unit
200: seller terminal
210: first wireless communication unit
220: first control unit
230: first input unit
231: the first photographing unit
232: first information input unit
240: first display unit
250: first memory
260: first position
270: first hour part
300: buyer terminal
310: second wireless communication unit
320: second control unit
330: second input unit
331: the second photographing unit
332: second information input unit
340: second display unit
350: second memory unit
360: second position
370: second time

Claims (5)

Installing an application for used goods trading on a seller terminal capable of taking pictures of used goods sellers;
Registering, by the used goods seller, the seller information on the used goods trading server through the application;
Photographing an image including a picture or a video of used goods to be sold by the registered seller through a seller terminal;
Storing the location information of the image and time information of the time of capturing the image in the seller terminal when the seller photographs the image;
Transmitting the image photographed by the seller to the used goods transaction server together with image position information and time information stored in the seller terminal;
Checking, by the used goods transaction server, whether location information and time information of the image received through the seller match the actual location and time, and authenticating the same;
Storing transaction information including location information and time information on the used goods that have been authenticated in the used goods trading server;
A purchaser searching for transaction information stored in the used goods trading server to find a desired used goods;
Determining the purchase of used goods found by the buyer and paying the price;
Informing the seller of the used goods in the used goods trading server of the purchase decision fact and the delivery address information;
Seller notified from the used goods trading server delivers used goods to a buyer;
The buyer receiving the used goods is determined whether the final purchase after the used goods check; And
If the final purchase of the second-hand goods from the buyer is determined, the second-hand goods trading server pays the payment to the seller; used goods trading method comprising a.
The method of claim 1,
The buyer searching for the used goods by searching the transaction information stored in the used goods trading server;
The transaction information searched by the buyer is to expose only the transaction information of the seller located within a certain distance set by the buyer with respect to the area in which the buyer is located, and in order to find a seller located within the predetermined distance, the image of the seller can be recorded on the terminal. When using your saved seller ’s location information,
The transaction information of the seller located within a predetermined distance set by the buyer is not the upload time of the transaction information, but the shooting time of the image included in the transaction information is shown in order from the most recent transaction information from the point of time at which the buyer searches. Determining the shooting time of the image included in the transaction information, used goods trading method, characterized in that when using the time information of the stored second-hand goods shooting time when taking the video in the terminal of the seller.
The method of claim 2,
Checking, by the used goods trading server, whether the location information and the time information of the image transmitted through the seller match the actual location and time, and authenticating the same;
Receiving the current location information obtained from the image capturing terminal of the seller when the seller executes an authentication application installed in the image capturing terminal;
Transmitting a plurality of candidate position identification target images corresponding to the received position information to the image photographing terminal of the seller;
Providing a location guide of the selected object image to the image capturing terminal of the seller when any one of the plurality of candidate position identifying object images is selected by the image capturing terminal of the seller;
Receiving a primary image, which is an image of an object to be checked by an image capturing terminal of the seller, moved to a place where the selected object is located according to the position guide;
Comparing the received primary image with the candidate image for identifying the candidate position, if the image matching degree is greater than or equal to a certain threshold, the first authentication code is issued to the image capturing terminal of the seller. Transmitting the authentication rejection message to; used goods trading method comprising a.
The method of claim 3,
Authenticating whether the image matches the purchase information through an authentication procedure for the location and time of the image provided by the seller;
When the camera is activated only when the first authentication code is received and the camera cannot be photographed when the first authentication code is not received, the image photographing terminal of the seller receives the first authentication code and the camera is activated. Receiving a secondary image, which is captured by the image capturing terminal of the seller and is an image of an object or a place that the buyer wants to trade in a location range corresponding to the current location information;
If the reception time of the secondary image is determined that a predetermined time has elapsed from the first authentication code issuing time, and if a predetermined time has elapsed, the authentication rejection message is not recorded without performing authentication on the secondary image. If the predetermined time has not elapsed, the secondary image is extracted from the secondary image by time information indicating the time when the secondary image was captured and not the time transmitted from the seller terminal. Comparing the extracted time information with the server time which is the time when the secondary image is received by the transaction server, and if the difference is within an error range, issuing a second authentication code to the image capturing terminal of the seller;
The issued second authentication code is uploaded to the transaction server by the image photographing terminal of the seller separately included in the secondary image or separately from the secondary image, so that the terminal of the buyer connected to the transaction server is second authenticated. And providing location information and time information authenticated with respect to the secondary image to the purchaser's terminal when accessing the transaction server through a code.
The method of claim 4, wherein
Storing transaction information including location information and time information on the used goods that have been authenticated in the used goods trading server;
A map screen display step of displaying a map on the screen of the purchaser terminal;
Displaying, by a marker, local information on the location of the seller on the displayed map screen;
Displaying the transaction information including a specific position and a specific time corresponding to the marker input by the seller when the marker is selected by the buyer; And
And confirming the displayed transaction information by the buyer and making a purchase request.

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