JP2022094157A - Authenticity determination apparatus and program - Google Patents

Abstract

To provide an authenticity determination apparatus, or the like, for properly determining authenticity of an identification certificate.SOLUTION: An authenticity determination apparatus 3 determines authenticity of an ID card by using a captured image of the ID card, which is received from a user terminal 5. The authenticity determination apparatus 3 includes authenticity determination means 302 which determines authenticity of the ID card on the basis of an angle of a line segment in a predetermined direction for multiple characters of on-demand information of the ID card, by using the captured image of the ID card. The authenticity determination means 302 determines an angle of the line segment with respect to a direction of a reference line regarding the characters, and determines that the ID card is not authentic when the angle does not fall within a predetermined range regarding the characters.SELECTED DRAWING: Figure 4

Description

The present invention relates to an authenticity determination device and a program thereof.

Financial institutions need to verify their identity with an ID card such as a driver's license when opening an account, but there are an increasing number of cases where ID cards are forged in order to impersonate another person for criminal purposes such as special fraud. ..

In a normal financial institution, it is common for a user to go to a financial institution and submit an ID card, and the financial institution side confirms the identity face-to-face using the submitted ID card. In this case, the ID card can be observed carefully, and the unnaturalness can be detected by the tactile sensation of the card. In addition, since recent ID cards are equipped with an IC function, it is possible to confirm the identity more reliably by checking the IC.

Further, Patent Document 1 describes an authenticity determination device for determining the authenticity of an ID card from an image of the face of the ID card taken by a scanner, and the authenticity of the ID card is determined by reading the submitted ID card with a scanner. It is also possible to do it.

Japanese Unexamined Patent Publication No. 2011-34535

Recently, financial institutions on the Internet such as online banks have become common. In some financial institutions of this type, identity verification is performed by taking a picture of the face of the ID card with a camera such as a smartphone and sending the image to the financial institution.

In this case, since the identity verification is performed only by the image, not by face-to-face, it is desired to devise a method for detecting the forgery. For example, if a forgery is made by pasting a printed matter printed with a pseudonym on a commercially available printer in the name field of an ID card, the forgery may not be known only from the image on the face of the ticket.

In order to detect such forgery, there is an example of requesting the submission of an image showing the thickness of the ID card, but if you make a forgery by pasting a thin printed matter with a pseudonym printed on the name field of a legitimate ID card, Forgery is hard to detect even from the image.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an authenticity determination device or the like capable of suitably performing an authenticity determination of an identity verification certificate.

The first invention for solving the above-mentioned problem is a device for determining the authenticity of an identity verification certificate, which uses an image of the identity verification certificate and has a plurality of characters of on-demand information formed on the identity verification certificate. The authenticity determination device is characterized by having an authenticity determination means for determining the authenticity of the identity verification certificate based on the angle of a line segment in a predetermined direction in the image.

The authenticity determination device of the present invention uses an image of an identity verification certificate, and uses a plurality of characters of on-demand information (information different for each identity verification certificate such as name and date of birth) formed on the identity verification certificate in a predetermined direction. The authenticity of the identity verification certificate is determined based on the angle in the above image of the line segment. The on-demand information of the identity verification certificate is usually printed once by the same printing mechanism using a thermal head or the like, and in the case of a true identity verification certificate, the angle of the line segment is the thermal head or the like. It is assumed that the value will be a constant value derived from the printing mechanism of. On the other hand, when a printed matter printed with a pseudonym or the like is pasted on an identity verification certificate, the angle of the line segment may be misaligned with respect to the characters of the printed matter due to the misalignment at the time of pasting. Therefore, in the present invention, it is possible to determine the authenticity of the identity verification certificate based on the angle of the line segment described above, and when a forgery is performed such that a thin printed matter printed with a pseudonym or the like is attached to the identity verification certificate. However, the forgery can be suitably detected.

The authenticity determination means obtains an angle with respect to the direction of the reference line of the line segment for a plurality of characters of the on-demand information, and if the angle of the plurality of characters is not within a certain range, the identity verification certificate is not true. Is desirable. The reference line is, for example, a ruled line formed on the identity verification certificate.
Regarding the authenticity determination of the present invention, more specifically, as described above, the angles of the above-mentioned line segments are obtained for a plurality of characters, and if this is within a certain range, the identity verification certificate is true, and if not, the identity verification certificate is true. Can be true. As the reference line at the time of angle calculation, a ruled line formed on the identity verification certificate can be used, and this can be detected from the identity verification certificate and used for angle calculation.

The characters are characters printed using, for example, a thermal head. Further, the identity verification certificate is a card having a rectangular shape in a plane, and it is desirable that the predetermined direction corresponds to the short side direction of the card.
In the identity verification certificate, it is usual to use the thermal head when printing the characters of the on-demand information, and the angle of the line segment corresponding to the arrangement direction of the heating elements of the thermal head and the transport direction of the identity verification certificate at the time of printing is constant. As a result, accurate authenticity determination becomes possible. In particular, it is preferable in terms of accuracy that the direction of the line segment used for authenticity determination corresponds to the arrangement direction of the heating element of the thermal head, and in the case of a flat rectangular card, the arrangement direction corresponds to the short side direction of the card. Is common.

It is desirable that the authenticity determination device has a receiving means for receiving the image of the identity verification certificate from the user terminal.
This makes it possible to construct an authenticity determination system that performs an authenticity determination using an image of an identity verification certificate transmitted from a user terminal using a network.

The second invention is a computer as an identity verification device, which is a device for determining the authenticity of an identity verification certificate, and uses an image of the identity verification certificate to form a line segment of a plurality of characters of on-demand information formed on the identity verification certificate in a predetermined direction. It is a program for functioning as an authenticity determination device having an authenticity determination means for determining the authenticity of the identity verification certificate based on the angle in the image.

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide an authenticity determination device or the like capable of suitably performing an authenticity determination of an identity verification certificate.

The figure which shows the authenticity determination system 1. The figure which shows the hardware composition of the authenticity determination device 3. The figure which shows the hardware composition of a user terminal 5. The figure which shows the functional structure of the authenticity determination device 3. The figure which shows the ID card 10. The figure explaining the printing of the ID card 10. A flowchart showing the flow of the authenticity determination method. An example of the shooting screen of the ID card 10. The figure explaining the authenticity determination method. The figure explaining the authenticity determination method. The figure explaining the authenticity determination method.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

(1. Authenticity judgment system 1)
FIG. 1 is a diagram showing an authenticity determination system 1 having an authenticity determination device 3 according to an embodiment of the present invention. The authenticity determination system 1 is configured by connecting an authenticity determination device 3 and a user terminal 5 so as to be communicable via a network. In the authenticity determination system 1, a photographed image (an image of the ID card 10) taken by the user's ID card 10 is transmitted from the user terminal 5 to the authenticity determination device 3, and the authenticity determination device 3 transmits the photographed image to the ID card 10. Make an authenticity check.

FIG. 2 is a diagram showing a hardware configuration of the authenticity determination device 3. The authenticity determination device 3 can be realized by a computer configured by connecting a control unit 31, a storage unit 32, a display unit 33, an input unit 34, a communication unit 35, and the like by a bus or the like. However, the present invention is not limited to this, and various configurations can be taken as appropriate.

The control unit 31 is composed of a CPU, ROM, RAM, and the like. The CPU calls and executes a program related to the processing of the authenticity determination device 3 stored in the storage medium such as the storage unit 32 and the ROM to the work area on the RAM. ROM is a non-volatile memory that permanently holds programs such as boot programs and BIOS, and data. The RAM is a volatile memory, and includes a work area used by the control unit 31 to perform various processes while temporarily holding programs and data loaded from the storage unit 32, ROM, and the like.

The storage unit 32 is a hard disk drive, a solid state drive, a flash memory, or the like, and stores a program executed by the authenticity determination device 3 in a process described later, data necessary for program execution, an OS, and the like. These programs and data are read out and executed by the control unit 31 as needed.

The display unit 33 has a display device such as a liquid crystal panel, and displays various display screens related to the processing of the authenticity determination device 3.
The input unit 34 is an input device such as a touch panel, a keyboard, a mouse, and a numeric keypad, and outputs the input data to the control unit 31.
The communication unit 35 is a communication interface that mediates communication with a user terminal 5 or the like via a network.

The user terminal 5 is a terminal with a camera possessed by the user, takes an image of the ID card 10, and transmits the photographed image to the authenticity determination device 3. As the user terminal 5, for example, a mobile terminal such as a smartphone or a tablet terminal is used.

FIG. 3 is a diagram showing a hardware configuration of the user terminal 5. As shown in FIG. 3, the user terminal 5 is configured by connecting a control unit 51, a storage unit 52, a display unit 53, an input unit 54, a communication unit 55, a camera 56, an audio input / output unit 57, and the like by a bus or the like. To. However, the present invention is not limited to this, and various configurations can be taken as appropriate.

The control unit 51, the storage unit 52, and the communication unit 55 are substantially the same as the control unit 31, the storage unit 32, and the communication unit 35 described above. Further, the display unit 53 has a display device such as a liquid crystal panel, and a touch panel is provided as an input unit 54 for inputting to the user terminal 5. The audio input / output unit 57 includes a microphone and a speaker used for audio input / output.

The camera 56 is an area camera including an optical lens, an image pickup element such as a CCD (Charge Coupled Device) or a CMOS (Complementary Metal-Oxide Semiconductor), an A / D (Analog / Digital) conversion unit, and the like. The camera 56 photoelectrically converts a subject image input via an optical lens by an image pickup device to generate an analog image signal. Then, the analog image signal is converted into digital image data by the A / D conversion unit.

(2. Function of authenticity determination device 3)
FIG. 4 is a diagram showing a functional configuration of the authenticity determination device 3. The authenticity determination device 3 includes a receiving means 301, an authenticity determining means 302, a display means 303, and the like.

In the receiving means 301, the control unit 31 of the authenticity determination device 3 receives the captured image of the ID card 10 from the user terminal 5 via the communication unit 35.

In the authenticity determination means 302, the control unit 31 of the authenticity determination device 3 uses the captured image of the ID card 10 received from the user terminal 5 to determine the authenticity of the ID card 10. The details of this authenticity determination will be described later.

In the display means 303, when the ID card 10 is not true in the above determination, the control unit 31 of the authenticity determination device 3 causes the display unit 33 to display a warning.

(3. ID card 10)
The ID card 10 is an identity verification certificate that is a target of authenticity determination in the present embodiment. An identity verification certificate is a medium used for identity verification at financial institutions, mobile phone carriers, etc., such as a driver's license, my number card, residence card, special permanent resident card, and the like.

FIG. 5A is a diagram showing an outline of the ID card 10, and schematically shows an example of the face of the ID card 10. The ID card 10 is formed on a flat rectangular card base material with the cardholder's name 12, date of birth 13, address 14, face image 18, date of issue of ID card 10, 15, issue number 16, and expiration date 17. Etc. are printed.

Of the ID cards 10, the name 12, the characters excluding the "year", "month", "day", and "raw" of the date of birth 13, the address 14, the face image 18, and the "year", "month", and the date of issuance 15 are "year", "month", and "month". Characters excluding "day", characters excluding "No." and "issue number" of issue number 16, expiration date 17 and the like are on-demand information that differs depending on each ID card 10, and are printed on the card substrate by a thermal transfer method using a thermal head. It is formed by printing at a fixed position. Characters other than the face image 18 are printed by the fusion type thermal transfer method, and the face image 18 is printed by the sublimation type thermal transfer method.

On the other hand, characters such as "name", "address", "date of delivery", "number", name 12, date of birth 13, address indicating the fields for entering the name 12, address 14, date of issue 15, and issue number 16. 14, delivery date 15, ruled line 11 in the entry field of issue number 16, "year" "month" "day" "raw" characters of birth date 13, "year" "month" of delivery date 15. The characters "day" and the characters "No." and "issue" of the issue number 16 are commonly used in each ID card 10.

These characters or ruled lines 11 are formed in advance at a fixed position on the card substrate by a printing method such as an offset printing method or a letterpress printing method before printing the on-demand information, and are called pre-printed portions. FIG. 5B is a pre-printed portion extracted from the ID card 10, and the ID is printed by printing the on-demand information on a card base material on which the pre-printed portion is previously formed as shown in FIG. 5B. The card 10 is manufactured. The structure of the on-demand information and pre-printed portion differs depending on the type of ID card 10 such as a driver's license, my number card, residence card, and special permanent resident card.

(4. Printing method by thermal transfer method)
Printing by the thermal transfer method is performed by the thermal transfer printer 100 shown in FIG. 6A. In the thermal transfer printer 100, the thermal transfer ribbon 200 wound around the supply reel 101 is unwound and conveyed in the transfer direction of the ID card 10 indicated by the arrow, and heat is applied to the thermal transfer ribbon 200 by the thermal head 110 in the middle of the process to transfer the thermal transfer ribbon 200. The 200 transfer layers are transferred to the ID card 10 being transported. The thermal transfer ribbon 200 after transfer is wound on the take-up reel 102.

The thermal head 110 has a plurality of heating elements as shown in FIG. 6 (b) along a direction orthogonal to the transport direction of the ID card 10 in a plane (corresponding to the paper surface normal direction in FIG. 6 (a)). 111s are provided side by side in a straight line. By controlling the on / off of the heat generated by each heating element 111, characters and the like of the on-demand information of the ID card 10 are printed. The transport direction of the ID card 10 corresponds to the long side direction of the ID card 10, and the arrangement direction of the heating elements 111 corresponds to the short side direction of the ID card 10 (hereinafter referred to as the vertical direction).

(4. Authenticity judgment method)
FIG. 7 is a flowchart showing the flow of the authenticity determination method executed by the authenticity determination system 1. S1 to S2 in FIG. 7 are processes in which the control unit 51 of the user terminal 5 controls and executes each part of the user terminal 5, and in S3 to S7, the control unit 31 of the authenticity determination device 3 controls each part of the authenticity determination device 3. It is a process to be controlled and executed.

In the present embodiment, the user first operates the user terminal 5 to launch a dedicated application program stored in advance in the storage unit 52. Then, the user terminal 5 displays a menu screen (not shown) on the display unit 53, activates the camera 56 according to the user's selection on the menu screen, and photographs the face of the ID card 10 (S1).

FIG. 8 is an example of the shooting screen of the ID card 10 at this time. In the present embodiment, the instruction is displayed on the display unit 53 of the user terminal 5 when the camera is activated, and the ID card 10 is photographed by prompting the user to fit the ID card 10 in the predetermined frame 531.

When the user terminal 5 shoots the ID card 10, the user terminal 5 transmits the shot image to the authenticity determination device 3 (S2). When the authenticity determination device 3 receives the captured image of the ID card 10 (S3), the authenticity determination device 3 determines the authenticity of the ID card 10 using the captured image (S4).

The authenticity determination of the present embodiment is performed based on the angles in the captured image of the line segment in the predetermined direction for the plurality of characters of the on-demand information of the ID card 10.

That is, on the true ID card 10, all the characters of the on-demand information are printed at once by the thermal head 110 having the heating elements 111 arranged in a straight line as shown in FIG. 6 (b). Therefore, the angle of the line segment in the vertical direction (predetermined direction) of the characters of the on-demand information, that is, the line segment corresponding to the arrangement direction of the heating element 111 is a constant value (usually) with respect to the transport direction of the ID card 10 at the time of printing. Is 90 °).

For example, when the characters "day" and "book" are formed on the ID card 10 as on-demand information as shown in FIG. 9A, a line segment in the vertical direction (corresponding to the vertical direction in the figure) of each character. At a certain angle with respect to the long side direction of the ID card 10, that is, the transport direction of the ID card 10 at the time of printing.

On the other hand, as shown in FIG. 9B, when the above character, for example, the character "day" is forged by pasting a printed matter A on which another character (for example, a mountain) is printed, due to the deviation at the time of pasting. , The vertical line segment of the character may not be at the same angle as the vertical line segment of another character ("book"). In the present embodiment, the authenticity can be determined by utilizing the deviation of this angle.

In the present embodiment, in performing the authenticity determination, as shown in FIG. 10A, first, the ruled line 11 formed on the ID card 10 is detected from the captured image. The ruled line 11 may be either the ruled line 11 in the long side direction of the ID card 10 or the ruled line 11 in the short side direction of the ID card 10, but in this example, the ruled line 11 in the long side direction of the ID card 10 is detected. .. Further, it is not necessary to detect all the ruled lines 11, and only a part of the ruled lines 11 may be detected.

Next, as shown in FIG. 10B, a plurality of characters 20 (for example, about 10 characters 20) of the on-demand information used for authenticity determination are extracted from the captured image. In the authenticity determination process of the present embodiment, it is preferable to use characters having continuous vertical bars such as "day", "book", and "1". Therefore, when extracting the character 20, for example, the ID card 10 is used. OCR (optical character recognition) processing in the area of on-demand information is performed to detect a predetermined character 20 suitable for authenticity determination as described above, but the present invention is not limited to this.

After that, as shown in FIG. 11A, the ruled line 11 detected above is used as a reference line, and the angle α of each character 20 with respect to the direction of the reference line of the vertical line segment 21 is calculated. When one character 20 includes a plurality of vertical line segments 21, the angles α of the plurality of line segments 21 may be averaged to obtain the angle α for the character 20, or any one of the line segments. The angle α of 21 may be the angle α with respect to the character 20.

When the value of the angle α of the plurality of characters 20 is within a certain range, the authenticity determination device 3 sets the ID card 10 to true (S5; YES) and completes the authenticity determination process. In the present embodiment, the above-mentioned authenticity determination is performed as identity verification when opening an account at a financial institution on the Internet, and after the authenticity determination process, the authenticity determination device 3 uses the ID card 10 as application information necessary for opening an account. User information (name 12, date of birth 13, etc.) on the face of the ticket is acquired from the photographed image of the ID card 10 and registered (S6), and the user information is stored in the storage unit 52.

On the other hand, in the authenticity determination device 3, when the value of the angle α of the plurality of characters 20 is not within a certain range, the ID card 10 is not true, that is, the character 20 of the on-demand information is a forged fake ID card. Suppose there are 10 possibilities.

For example, when the printed matter A is attached to the ID card 10 at an angle as shown in FIG. 11B, the angle α of the “mountain” character 20 of the printed matter A is larger than the angle α of the other characters 20. It is said that the ID card 10 is not true because of the difference. As shown in FIG. 11C, for example, the above-mentioned fixed range can be a range of front-back constant values centered on the average value or the median of the angles α of the plurality of characters 20, but is not limited to this.

When the authenticity determination device 3 determines that the ID card 10 is not true (S5; NO), the authenticity determination device 3 displays a warning to the display unit 33 that there is a possibility of a fake ID card 10 (S7). On the display unit 33, the character 20 whose angle α is not within the above-mentioned fixed range (for example, “mountain” in the example of FIG. 11C) is displayed, and the person in charge can be urged to confirm this.

The person in charge can decide whether to accept the application by looking at the character 20 or the like displayed on the display unit 33 and confirming the character 20 in the photographed image of the ID card 10. If necessary, the person in charge can also make an inquiry to the user or the like who sent the photographed image.

If the person in charge decides not to accept the application, the person in charge informs the user by transmitting the fact that the application is not accepted from the authenticity determination device 3 to the user terminal 5. When it is determined that the application is accepted, the user information on the face of the ID card 10 can be registered by the authenticity determination device 3 as in S6 described above.

As described above, the authenticity determination device 3 of the present embodiment uses the captured image of the ID card 10, and the authenticity of the ID card 10 is based on the angle α of the vertical line segment 21 of the plurality of characters 20 of the on-demand information. Make a judgment. The on-demand information of the ID card 10 is usually printed once using the thermal head 110, and in the case of a true ID card 10, the above angle α is the configuration of the heating element 111 of the thermal head 110. It is expected to be a constant value from which it is derived. On the other hand, when the printed matter A printed with a pseudonym or the like is pasted on the ID card 10, the character 20 of the printed matter A may be misaligned by an angle α due to the misalignment at the time of pasting. Therefore, in the present embodiment, it is possible to determine the authenticity of the ID card 10 based on the above angle α, and there is also a case where a forgery such as printing a pseudonym or the like on a thin printed matter A and pasting it on the ID card 10 is performed. , The forgery can be suitably detected.

Regarding the authenticity determination of the present embodiment, more specifically, the angle α with respect to the direction of the reference line of the line segment 21 is obtained for a plurality of characters 20, and when this is within a certain range, the ID card 10 is true. If not, it can be true. As the reference line, a ruled line 11 formed on the ID card 10 can be used, and this can be detected from the ID card 10 and used for calculating the angle α. However, the direction of the reference line can be the horizontal direction or the vertical direction of the captured image of the ID card 10.

Further, in the present embodiment, the line segment 21 used for authenticity determination is a vertical line segment, but in the case of the plane rectangular ID card 10, the vertical direction is generally the heating element 111 of the thermal head 110. This is because it corresponds to the arrangement direction, which can improve the accuracy of authenticity determination.

On the other hand, the line segment 21 used for the authenticity determination can be a line segment in the long side direction of the ID card 10. That is, the direction corresponds to the transport direction of the ID card 10 at the time of printing, and when the ID card 10 is transported in a straight line in the thermal transfer printer 100, the angle α of the line segment 21 in the long side direction of the ID card 10 is turned on. This is because the value is constant for a plurality of characters 20 of the demand information. However, considering the possibility of meandering when the ID card 10 is conveyed, it is preferable that the line segment 21 used for authenticity determination is a line segment in the vertical direction in terms of accuracy.

Further, the authenticity determination device 3 of the present embodiment performs an authenticity determination using the captured image of the ID card 10 transmitted from the user terminal 5, thereby connecting the authenticity determination device 3 and the authenticity determination system 1 by the user terminal 5 to the network. Can be built using.

However, the present invention is not limited to that described in the above embodiments. For example, in the present embodiment, the authenticity determination is performed as identity verification at the time of opening an account, but the application scene or application purpose of the authenticity determination of the present embodiment is not particularly limited.

Further, in the present embodiment, the authenticity is determined using the captured image transmitted from the user terminal 5, but even when the ID card 10 of the user who has visited the store is read by a scanner, the authenticity is determined from the image. Can be done.

Further, in the present embodiment, the character 20 of the on-demand information printed by using the thermal head 110 is used for authenticity determination, but the printing method of the on-demand information is the vertical line segment 21 or the long side of the ID card 10. As long as the angle α of the line segment 21 in the direction is a constant value derived from the printing mechanism, the inkjet method is not particularly limited. However, in the ID card 10, it is usual to use the thermal head 110 when printing on-demand information, and the angle α of the line segment 21 in the vertical direction and the line segment 21 in the long side direction of the ID card 10 generates heat of the thermal head 110. By having a constant value derived from the arrangement direction of the body 111 and the transport direction of the ID card 10 at the time of printing, accurate authenticity determination becomes possible.

Further, in the present embodiment, the authenticity is determined based on whether or not the angles α of the plurality of characters 20 are within a certain range, but the authenticity is determined from the difference between the maximum value and the minimum value of the angles α of the plurality of characters 20. If the difference is, for example, a predetermined value or more, it can be determined that the ID card 10 is not true.

Although preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to such examples. It is clear that a person skilled in the art can come up with various modified or modified examples within the scope of the technical idea disclosed in the present application, and these also naturally belong to the technical scope of the present invention. Understood.

1: Authenticity determination system 3: Authenticity determination device 5: User terminal 10: ID card 20: Character 21: Line segment 100: Thermal transfer printer 110: Thermal head 111: Heating element 301: Receiving means 302: Authenticity determining means 303: Display means

Claims (7)

It is an identity verification device that determines the authenticity of the person.
An authenticity determination means for determining the authenticity of an identity verification certificate based on an angle in the image of a line segment of a plurality of characters of on-demand information formed on the identity verification certificate in a predetermined direction using the image of the identity verification certificate. An authenticity determination device characterized by having. The authenticity determination means obtains an angle with respect to the direction of the reference line of the line segment for a plurality of characters of the on-demand information, and if the angle of the plurality of characters is not within a certain range, the identity verification certificate is not true. The authenticity determination device according to claim 1, wherein the device is characterized by the above. The authenticity determination device according to claim 2, wherein the reference line is a ruled line formed on the identity verification certificate. The authenticity determination device according to any one of claims 1 to 3, wherein the character is a character printed by using a thermal head. The identity verification certificate is a flat rectangular card.
The authenticity determination device according to claim 4, wherein the predetermined direction corresponds to the short side direction of the card. The authenticity determination device according to any one of claims 1 to 5, wherein the authenticity determination device includes a receiving means for receiving an image of the identity verification certificate from a user terminal. Computer,
It is an identity verification device that determines the authenticity of the person.
An authenticity determination means for determining the authenticity of an identity verification certificate based on an angle in the image of a line segment of a plurality of characters of on-demand information formed on the identity verification certificate in a predetermined direction using the image of the identity verification certificate. A program for functioning as an authenticity determination device.

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