JP2015152624A - Photography auxiliary tool for portable terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a photography auxiliary tool of a portable terminal for enabling a camera incorporated in the portable terminal to easily perform photography and a system and method using the photography auxiliary tool of the portable terminal.SOLUTION: A photography auxiliary tool of a portable terminal for enabling a camera incorporated in the portable terminal to focus on a subject includes: a back panel which is parallel with a surface having a camera lens of the portable terminal; and a photography auxiliary part adhered to the back panel. The photography auxiliary part includes: a contact surface with the subject photographed by the camera; and a contact surface with the back panel. The contact surface with the subject and the contact surface with the back panel are parallel with each other, and a distance between the contact surface with the subject and the contact surface with the back panel is a distance with which the camera can focus on the subject, and the range of the contact surface with the subject is included in a range which can be photographed by the camera, and the range of the contact surface with the back panel includes the range of the camera lens.

Description

  The present invention relates to a photographing assistance tool for a portable terminal. More specifically, the present invention relates to a photographing assist tool for a portable terminal that allows a camera built in the portable terminal to easily focus on a subject, and a system and method using the photographing assist tool for the portable terminal.

  Conventionally, a crew member of a high-speed bus has to check a boarding ticket of a passenger to be boarded every time it stops at a stop. Specifically, a passenger purchases a bus ticket by, for example, receiving a ticket at a convenience store after making a reservation on the Internet before boarding (see, for example, Patent Document 1). Then, the passenger gets on the bus with the purchased paper ticket. A crew member looks at this boarding ticket, and confirms whether the passenger has reserved the boarding. In addition, the crew member confirms seats available for passengers, boarding stops, and getting-off stops. That is, the crew member confirms the contents described in the ticket visually.

  Since high-speed buses are operated by a small number of crew members, there is a problem that it is a burden on the crew members to visually check the boarding ticket as described above. Therefore, there is a demand for a means for confirming whether or not a passenger has made a reservation for boarding, and a means for grasping the contents of the reservation, without the crew member visually confirming the contents described in the boarding ticket.

  By the way, in recent years, a QR code (registered trademark) is used as a substitute or a part of an air ticket or a concert ticket. At airports and concert halls, customers authenticate air tickets and concert tickets by holding QR code-printed paper, mobile phones and smartphones displaying QR codes over QR code readers, and so on. In the future, QR codes may be widely used for highway bus tickets.

JP 2000-067276 A

  However, when reading a QR code, an error may occur because the QR code is not normally recognized. In particular, when a camera built in a tablet terminal or the like captures a QR code, an error is likely to occur because it is difficult for the camera to focus on the QR code. When a QR code is adopted for a high-speed bus ticket, since the QR code is authenticated at each stop during the bus travel, it is necessary for the camera to normally capture the QR code in a short time. That is, it is desirable that the crew and passengers do not need to adjust the positions of the tablet terminal and the QR code in order to focus.

  The present invention has been made in view of such a problem, and the object of the present invention is to issue a QR code when a passenger makes a reservation for boarding a bus, and a tablet terminal in the bus It is to provide a photographing assisting tool for easily capturing a QR code by a camera incorporated in the camera, and to provide an authentication system and method using the photographing assisting tool.

  In order to achieve the above object, the present invention provides a shooting assisting tool for a camera built in a portable terminal to focus on a subject, and the shooting assisting tool includes: A back panel that is parallel to the surface of the mobile terminal having the camera lens, and a photographing assistance unit that is bonded to the rear panel, the photographing assistance unit including a contact surface with a subject that is photographed by the camera A contact surface with the back panel, the contact surface with the subject and the contact surface with the back panel are parallel, and the distance between the contact surface with the subject and the contact surface with the back panel Is the distance that the camera can focus on the subject, the range of the contact surface with the subject is included in the range that the camera can shoot, and the range of the contact surface with the back panel is Said Characterized in that it comprises a range of Rarenzu.

  As described above, according to the present invention, the camera mounted on the tablet terminal can easily capture the QR code by using the photographing assisting tool of the portable terminal. In other words, crew members and passengers can place a QR code on paper or a mobile phone or smartphone on which the QR code is displayed so that the camera built in the tablet terminal can focus on the QR code. No need to adjust. In addition, according to the present invention, the tablet terminal installed in the bus can transmit the photographed QR code to the server and receive the latest reservation information from the server. Therefore, the tablet terminal in the bus can grasp the latest reservation status of the running bus.

It is a block diagram which shows the front surface and back surface of the imaging | photography assistance tool of a portable terminal. It is an exploded view of the photography auxiliary tool of a portable terminal. 1 is an overall view of an authentication system. It is an example of a bus ticket management database. It is a flowchart of an authentication method. It is an image screen which displays a passenger list. It is an image screen that displays the operation status. It is an image screen which displays a seating chart.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that although the QR code is described in this specification, the present invention is not limited to the QR code and can be implemented using a bar code or the like. In addition, the photographing assisting tool of the portable terminal according to the present invention can be used not only for QR code authentication in highway bus tickets, but also for QR code authentication in tickets for concerts and events.

  FIG. 1A is a view of a photographing assist tool of a portable terminal as viewed from the front side, and FIG. 1B is a view as viewed from the back side. The photographing assisting tool 100 includes a QR code reading assisting part 111, a front panel 112, a rear panel 113, and a screw part 114.

  The tablet terminal 120 is sandwiched between the front panel 112 and the back panel 113 of the photographing assisting tool 100, and a plurality of portions of the front panel 112 and the back panel 113 are fixed by screw portions 114 such as bottles and nuts. The material of the front panel 112 and the back panel 113 is assumed to be transparent polycarbonate, but is not limited thereto. Such a photographing assistance tool 100 is installed in a bus. That is, by using the photographing assistance tool 100, the tablet terminal 120 can be fixed on a bus fare box or the like. Furthermore, by using the photographing assisting tool 100, it is possible to protect the tablet terminal 120 from an external impact or the like. In order to strengthen protection, a cushioning material can be used for the contact surfaces of the front panel 112 and the back panel 113 with the tablet terminal 120.

  A QR code reading assist unit 111 is bonded to the back panel 113. The QR code reading assisting unit 111 is a part for assisting the tablet terminal 120 so that it can easily capture the QR code. Specifically, the QR code reading assisting unit 111 has a flat surface for contacting paper on which the QR code is printed, a mobile phone or a smartphone on which the QR code is displayed (hereinafter, this flat surface is referred to as a flat surface). QR code contact surface). The QR code contact surface is parallel to the surface on which the QR code reading assist unit 111 and the back panel 113 are in contact. The shape of the QR code reading assisting unit 111 is assumed to be a rectangular parallelepiped or a cube as shown in FIG. 1, but is not limited thereto. The QR code reading auxiliary unit 111 is assumed to be made of transparent polycarbonate, but is not limited to this. As seen from the back side of FIG. 1, the portion of the camera lens 121 of the tablet terminal 120 is included in the area of the surface where the QR code reading auxiliary unit 111 and the back panel 113 are in contact. Details will be described with reference to FIG. As described above, by using the photographing assisting tool 100, the camera built in the tablet terminal 120 can easily photograph the QR code.

  The tablet terminal 120 has a camera function, and can capture a QR code printed on paper or a QR code displayed on a passenger's mobile phone or smartphone. The tablet terminal 120 has a QR code reading function. Moreover, the tablet terminal 120 is equipped with a communication function and can communicate with a server of a bus operating company. In addition to the tablet terminal, the tablet terminal 120 includes an electronic device equipped with a camera function such as a smartphone, a QR code reading function, and a communication function.

  FIG. 2 is an exploded view of the photographing assistance tool 100. The front panel 112 can cover portions other than the screen of the tablet terminal 120. The tablet terminal 120 has a camera lens 121 on the back surface (on the opposite surface of the screen). The rear panel 113 has a hole larger than the size of the camera lens 121 (penetrated to the opposite surface). In addition, a hole larger than the size of the camera lens 121 is also formed on the surface of the QR code reading assisting unit 111 that is in contact with the back panel 113 (through the opposite surface). The QR code reading auxiliary unit 111 is bonded to the rear panel 113 so that the hole of the back panel 113 and the hole of the QR code reading auxiliary unit 111 overlap. Further, the tablet terminal 120 is sandwiched between the front panel 112 and the back panel 113 so that the camera lens 121 is within the area of the two holes. In other words, the camera built in the tablet terminal 120 captures the QR code through the hole in the back panel 113, the hole in the QR code reading auxiliary unit 111, and the QR code contact surface.

  As described above, by using the photographing assisting tool 100 of the mobile terminal, the camera built in the tablet terminal 120 can easily photograph the QR code. Specifically, the distance from the “camera lens 121” of the tablet terminal 120 to the “screen of a mobile phone or a smartphone on which QR code is displayed or a paper on which a QR code as a subject is displayed” (that is, “QR code”). The dimension from the “surface in contact with the back panel 113 of the reading assist unit 111” to the “QR code contact surface”) is the distance at which the QR code is focused when the camera built in the tablet terminal 120 captures the QR code. Thus, the dimensions of the QR code reading auxiliary unit 111 are determined. Furthermore, the size and shape of the QR code reading assisting unit 111 are determined so that the range of the QR code contact surface is within a range that can be captured by a camera built in the tablet terminal 120. Therefore, crew members and passengers can place the QR code printed paper or the mobile phone or smartphone on which the QR code is displayed so that it is in focus when the camera built in the tablet terminal 120 captures the QR code. There is no need to adjust by moving.

  In this way, the photographing assisting tool 100 can be designed according to the tablet terminal 120 to be used. More specifically, the sizes of the front panel 112 and the back panel 113 are enlarged or reduced in accordance with the size of the casing of the tablet terminal 120 and the size of the screen. In addition, a part of the front panel 112 and the rear panel 113 is cut so that an operation part such as a button attached to the tablet terminal 120 is not covered with the panel. Further, the screw portion 114 is adjusted according to the thickness of the tablet terminal 120. In addition, as described above, the dimensions and shape of the QR code reading assist unit 111 are designed in accordance with the performance of the camera built in the tablet terminal 120. Furthermore, the photographing assisting tool 100 can be designed so that the position of the QR code reading assisting unit 111 on the back panel 113 can be freely changed according to the position of the camera lens 121 of the tablet terminal 120. That is, the mobile QR code reading assisting unit 111 can be used so that a user such as a crew member can move and adjust the QR code reading assisting unit 111 on the rear panel 112.

  FIG. 3 is an overall view of an authentication system 300 using the photographing assistance tool 100. The system 300 includes the tablet terminal 120 installed in the bus 302 together with the server 301 of the bus service company and the photographing assisting tool 100.

  The server 301 stores a database 311 regarding boarding tickets. The server 301 can send and receive data to and from the tablet terminal 120. The tablet terminal 120 includes a plurality of tablet terminals.

  In the vehicle of the bus 302, the photographing assisting tool 100 integrated with the tablet terminal 120 as shown in FIG. The QR code reading assist unit 111 of the photographing assisting tool 100 is installed so that the QR code contact surface faces the passenger side and the display screen of the tablet terminal 120 faces the crew member side.

  Here, the issuing of a boarding ticket when a passenger makes a reservation for a boarding with a bus operating company will be described. When a passenger makes a reservation for boarding via the Internet, a telephone, a window, etc., the bus operating company can issue a ticket with a QR code, or can issue only a QR code instead of the boarding ticket. Passengers can board the bus with paper printed with a QR code printed ticket or paper printed with a QR code instead of a ticket. Alternatively, the passenger can get on the bus with a mobile phone, a smartphone, or the like on which a ticket with a QR code is displayed or a QR code instead of a ticket is displayed.

  FIG. 4 is an example of the database 311 related to the boarding ticket stored in the server 301. In the ticket management database 311, for each reserved ticket, “ticket ID”, “seat”, “name”, “boarding stop”, “getting off”, “boarding”, “getting off”, Data indicating information on “attribute”, “date of operation”, “route”, “system”, “flight number”, “car number”, “QR code”, “reservation date”, “change date”, etc. Stored. Each will be described. The “ticket ID” is an identifier assigned to each ticket. The “seat” represents a seat on which a passenger carrying this ticket can sit, and includes data indicating the position of the seat and the type of seat (for example, a normal seat, a special seat, a woman seat, etc.). “Name” is the name of the passenger who has this ticket. “Boarding stop” and “Getting off stop” indicate a stop where a passenger carrying this ticket can get on and a stop where the passenger must get off. “Attribute” indicates an attribute of a passenger (for example, an adult, a dwarf, a student, etc.). “Operating date”, “Route”, “System”, “Flight number”, “Car number” are the operating date, route, system of the bus that passengers carrying this ticket can board Indicates the flight number and car number. “QR code” indicates QR code data having information related to the ticket. That is, the QR code is a code that can store at least a part of the data in the ticket management database 311. “Reservation date and time” is the date and time when this ticket was reserved. “Change date and time” is the date and time when the reservation contents of this ticket are changed.

  When a bus ticket is reserved, a “ticket ID” is given, and a “ticket ID”, “seat”, “name”, “boarding stop”, “getting off”, “attribute”, “operation” Data indicating “date to be performed”, “route”, “system”, “flight number”, “car number”, and “reservation date” are stored in the ticket management database 311. When a bus ticket is reserved, a QR code having information related to the ticket is created, and the QR code data is stored in the ticket management database 311.

  As will be described later, when the passenger gets on and off the vehicle, the data indicating the “boarding situation” and the “getting off situation” is stored in the boarding ticket management database 311. Further, when the reservation contents of the bus ticket are changed, data indicating “change date and time” is stored in the ticket management database 311.

  FIG. 5 is a flowchart of an authentication method using the photographing assistance tool 100. Passengers carry a paper-based ticket printed with a QR code. Alternatively, the passenger has a mobile phone or a smartphone on which a QR code is displayed. In addition, the server 301 acquires the current location information of the bus as needed using GPS or the like. The bus departs from the business office and travels in the order of the first stop, stop A, stop B,.

  In step 501, basic data is downloaded from the server 301 to the tablet terminal 120. That is, the server 301 transmits basic data to the tablet terminal 120. Specifically, for example, before leaving the bus, a bus crew member receives the imaging assistance tool 100 integrated with the tablet terminal 120 at the sales office and installs it in the vehicle. The crew member also activates the tablet terminal 120 to download basic data from the server 301 to the tablet terminal 120. The basic data includes data indicating the arrival time of each stop, data indicating a seating chart, and the like.

  In step 502, login to the authentication system. That is, the tablet terminal 120 transmits data necessary for login authentication to the server 301. Next, the server 301 performs login authentication based on data necessary for login authentication received from the tablet terminal 120. Specifically, for example, a bus attendant logs in to the system using the tablet terminal 120 after arriving at the first stop. The tablet terminal 120 transmits, to the server 301, information specifying a bus to be operated such as “date to be operated”, “route”, “system”, “flight number”, “car number” at the time of login or after login. . If the login is successful, the process proceeds to step 503. If the login fails, the server 301 notifies the tablet terminal 120 of an error.

  In step 503, information related to the reserved boarding ticket (hereinafter referred to as reservation information) is downloaded from the server 301 to the tablet terminal 120. That is, first, the server 301 refers to the ticket management database 311 and receives the “date of operation”, “route”, “system”, “flight number”, “flight” received from the tablet terminal 120 at the time of login or after login. The “ticket ID” that stores the same data as the data indicating the “car number” is specified. That is, these specified ticket IDs are the ticket IDs of the tickets possessed by passengers who are scheduled to board this bus. Next, in the ticket management database 311, the server 301 stores “seat”, “name”, “boarding station”, “getting off station”, “attribute”, “ Refer to “QR Code”. Next, the server 301 stores the data indicating the referred “ticket ID”, “seat”, “name”, “departure stop”, “get-off stop”, “attribute”, “QR code”, etc. Transmit to terminal 120.

  When reservation information is downloaded for the first time after logging in, the reservation information of all passengers on the bus is downloaded. Thereafter, when a new ticket is reserved, the reservation information of the newly reserved ticket is downloaded. Or after that, when a change is made to the contents of the already reserved ticket, information indicating the change contents of the reservation information is downloaded. That is, when logging in at the first stop, the server 301 transmits the reservation information data of all passengers to the tablet terminal 120. Thereafter, each time a ticket reservation relating to the bus in service is added or changed, the server 301 can transmit data of the addition or change to the tablet terminal 120.

  In this way, the latest reservation information can be acquired by the tablet terminal 120 in the bus car each time a ticket reservation is added or changed. Therefore, before arriving at the second stop, stop A, the third stop, stop B, ..., the final stop, it is possible to grasp the latest information on passengers getting on and off at the next stop it can.

  That is, after logging in, the tablet terminal 120 can receive data stored in the ticket management database 311 in the server 301 and store this data in the tablet terminal 120. Furthermore, after that, the tablet terminal 120 can receive the additional data and change data of the ticket management database 311 in the server 301 and update the data stored in the tablet terminal 120 as needed. Therefore, the tablet terminal 120 is not the data of the ticket management database 311 in the server 301 but the tablet terminal while the bus is traveling in an area where the communication state is bad (the area where the tablet terminal 120 cannot exchange data with the server 301). Data stored in 120 can be referenced. Therefore, even when the tablet terminal 120 cannot communicate with the server 301, it can perform various processes such as QR code authentication, passenger list display, operation status display, and seating chart display.

  In step 504, QR code authentication is performed. Specifically, a passenger who has boarded at a stop uses a QR code printed on a paper ticket or a QR code displayed on the passenger's mobile phone or smartphone, etc. The part 111 is brought into contact with the QR code contact surface. The camera built in the tablet terminal 120 captures the QR code through the camera lens 121. Next, the tablet terminal 120 transmits captured QR code data to the server 301. Next, the server 301 authenticates the QR code data received from the tablet terminal 120. That is, the server 301 determines whether or not the received QR code data matches the QR code data stored in the boarding ticket management database 311 in the server 301.

  In the above determination, if the QR codes match (when the QR code authentication is successful), the server 301 refers to the ticket management database 311 and selects “seat” and “name” corresponding to the QR code. Identify. Next, the server 301 transmits data indicating the specified “seat” and “name” to the tablet terminal 120. Next, based on the received data indicating “seat” and “name”, the tablet terminal 120 displays information indicating the passenger's seat, name, and the like on the screen of the tablet terminal 120. The crew can see the display and tell the passenger the seat. In addition, the server 301 refers to the ticket management database 311 and updates the “boarding status” data corresponding to the QR code to “boarded” data.

  In the above determination, when the QR codes do not match (when the QR code authentication fails), the server 301 notifies the tablet terminal 120 of an error.

  This QR code authentication can be performed not only by the server 301 but also by the tablet terminal 120. That is, the tablet terminal 120 determines whether or not the QR code data captured by the camera incorporated in the tablet terminal 120 matches the QR code data downloaded from the server 301 in step 503. If the QR codes match (when the QR code authentication is successful), the tablet terminal 120 refers to the data downloaded from the server 301 in step 503, and sets the “seat” and “name” corresponding to the QR code. Identify. Next, based on the data indicating the specified “seat” and “name”, the tablet terminal 120 displays information indicating the passenger's seat, the name, and the like on the screen of the tablet terminal 120. When the tablet terminal 120 authenticates the QR code in this way, the tablet terminal 120 transmits data indicating that the QR code authentication is successful and data of the captured QR code to the server 301. The server 301 refers to the boarding ticket management database 311 and updates the “boarding status” data corresponding to the received QR code to the “boarded” data. The server 301 stores the received QR code data in the ticket management database 311. If the QR codes do not match (when the QR code authentication fails), the tablet terminal 120 displays an error on the screen of the tablet terminal 120.

  During the QR code authentication, the image being shot is not displayed on the screen of the tablet terminal 120. That is, an image including a QR code taken by a camera built in the tablet terminal 120 is set to be hidden on the screen of the tablet terminal 120. Therefore, the crew can view the screen (passenger list, seating chart, etc.) displayed by the system even during the QR code authentication. That is, the camera built in the tablet terminal 120 can be obtained simply by bringing the passenger into contact with a QR code-printed surface of the QR code contact surface of the photographing assisting tool 100 or a screen of a mobile phone or smartphone on which the QR code is displayed. It is possible to focus on the QR code that is the subject. Therefore, when the camera built in the tablet terminal 120 captures the QR code, the crew member does not need to look at the screen of the tablet terminal 120 in order to check whether or not the camera is in focus. For this reason, even if the crew member does not check the image being photographed (that is, while looking at the passenger list, the seating chart, etc.), the camera built in the tablet terminal 120 can photograph the QR code normally. .

  Such a step 504 is performed when there are passengers boarding from each stop at the first stop, the stop A, the stop B,... (Excluding the end stop). Thus, on the server 301 side, it is possible to grasp which passenger has boarded at which stop.

  In step 505, the process of getting off is performed. Specifically, when a passenger gets off at the bus stop, the crew member displays a seat list as shown in FIG. 6 on the screen of the tablet terminal 120 and selects the corresponding passenger (passenger who got off). That is, first, the tablet terminal 120 displays a passenger list on the screen. Next, the tablet terminal 120 transmits data (such as a name) indicating the selected passenger to the server 301. Next, the server 301 refers to the ticket management database 311 and identifies the passenger indicated by the received data. Next, the server 301 updates the data on the “get-off status” of the specified passenger in the ticket management database 311 to the data “get-off”.

  Alternatively, after passing through each stop, it is also possible to update the “getting off status” data in the boarding ticket management database 311 in the server 301, assuming that the passengers got off as per the boarding ticket. That is, as described above, the server 301 acquires the current location information of the bus as needed using GPS or the like. Based on this position information, the server 301 determines that the passenger who has the ticket that is the stop is getting off when the bus departs from each stop. The data can be updated to “get off” data.

  Such a step 505 is performed when there is a passenger getting off at each stop at a stop (excluding the first stop) such as the stop A, the stop B,... In this way, on the server 301 side, it is possible to grasp which passenger got off at which stop.

  In step 506, an end operation is performed. Specifically, for example, after all passengers get off at the terminal stop, the crew member performs an end operation using the tablet terminal 120. By the end operation, the operation record information is transmitted from the tablet terminal 120 to the server 301, and thereafter, the user logs out. That is, the tablet terminal 120 transmits operation record information to the server 301. The operation record information includes a history of operations performed on the tablet terminal 120 (QR code authentication, reservation change, etc.) and a communication history with the server.

  FIG. 6 is an image screen of a passenger list displayed on the tablet terminal 120. For each ticket, it is possible to display information related to a ticket ID, information indicating a seat, a boarding stop, a getting-off stop, a passenger's name, and attributes (adult, dwarf, student, etc.). It is also possible to select a specific stop and mark the passengers who are scheduled to get on or get off at this stop, or mark the tickets for which reservations are duplicated. This passenger list can display a list of all passengers, or can display a list of only passengers who get on or off at a specific stop. In the passenger list, vacant seat information can also be displayed, and the number of vacant seats for each type of seat (normal seat, special seat, female seat, etc.) can be displayed.

  The crew can also operate the tablet terminal 120 to change the reservation details of the boarding ticket. In this case, the tablet terminal 120 transmits data indicating the contents changed in the tablet terminal 120 to the server 301. The server 301 updates the ticket management database 311 based on the received data.

  When the bus approaches the stop, the screen automatically switches to the passenger list screen as shown in FIG. That is, if the distance between the bus and the stop is below the threshold based on the current location information of the bus, a passenger list as shown in FIG. 6 can be displayed on the screen of the tablet terminal 120.

  FIG. 7 is an image screen of the operation status displayed on the tablet terminal 120. On the operation status screen, the next stop to be stopped and the scheduled time to arrive are displayed. In addition, the number of passengers scheduled to get on at the next stop and the number of passengers scheduled to get off are displayed. Furthermore, the number of people in the current car (the current number of passengers and all seats) is displayed.

  When the bus leaves the bus stop, the screen automatically switches to the operation status screen as shown in FIG. That is, if the distance between the bus and the stop exceeds the threshold based on the current location information of the bus, the operation status as shown in FIG. 7 can be displayed on the screen of the tablet terminal 120.

  FIG. 8 is an image screen of the seating chart displayed on the tablet terminal 120. For each seat, it is indicated that the boarding is “reserved”, “reserved (not boarded)” and “vacant seat”. That is, it indicates whether a ticket has already been reserved for each seat. In addition, for each seat, whether or not a passenger is in the seat is indicated.

DESCRIPTION OF SYMBOLS 100 Imaging assistance tool 111 QR code reading assistance part 112 Front panel 113 Back panel 114 Screw part 120 Tablet terminal 121 Camera lens 301 Server 311 Passage management database 302 Bus

Claims (8)

A camera built in the mobile device is a shooting aid for focusing on the subject,
The photographing assisting tool is:
A back panel parallel to the surface of the mobile terminal having the camera lens;
A photographing auxiliary unit bonded to the back panel;
The photographing auxiliary unit is
A contact surface with a subject photographed by the camera;
A contact surface with the back panel,
The contact surface with the subject and the contact surface with the back panel are parallel,
The distance between the contact surface with the subject and the contact surface with the back panel is a distance at which the camera can focus on the subject,
The range of the contact surface with the subject is included in the range that the camera can shoot,
The range of the contact surface with the back panel includes the range of the camera lens.   The contact surface of the back panel and the auxiliary photographing unit with the rear panel has a hole larger than the size of the camera lens, and the contact surface between the rear panel hole and the auxiliary photographing unit with the rear panel. The photographing auxiliary tool according to claim 1, wherein the hole overlaps the hole.   The photographing assistance tool according to claim 1, wherein the photographing auxiliary unit and the back panel are made of a transparent material.   The photographing auxiliary tool according to any one of claims 1 to 3, further comprising a front panel that covers a surface opposite to the surface having the camera lens of the portable terminal.   5. A portable terminal sandwiched between the rear panel according to claim 1 and the front panel according to claim 4, further comprising means for transmitting data taken by a camera built in the portable terminal. . A system comprising the mobile terminal according to claim 5 and a server,
The server
Means for receiving image data taken by a camera built in the portable terminal;
A system comprising: means for authenticating the received image data with image data stored in a database.   The system according to claim 6, wherein the server transmits information corresponding to image data stored in the database to the portable terminal. The portable terminal is
Means for receiving image data stored in the database from the server;
8. The system according to claim 6, wherein image data captured by a camera built in the portable terminal is authenticated as image data received from the server.

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