JP2018147207A - Individual identification device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an individual identification device capable of more improving security than a conventional manner.SOLUTION: An individual identification device 100 comprises: a detection part 30 for detecting at least one of fingerprint information, palm print information and hand blood vessel shape information of a user 90; an extraction part 41 for extracting a feature point of the user 90 from a detection result of the detection part 30; a storage part 42 for storing the feature point extracted by the extraction part 41 for each individual; an individual specification part 43 for specifying the user 90 by comparing the feature point extracted by the extraction part 41 with the feature point stored by the storage part 42; and a cylindrical grip 10 to be gripped by the user 90 such that a finger belly 51b of an end joint 51a of the thumb 51 comes into contact with an upper end part 10a, and that the fingers other than the thumb 51 come into contact with a side face part 10b. Also, the grip 10 comprises: a detection part 30; and a first stopper 11 configured to protrude from the upper end part 10a, and to be hooked by a first joint 51c of the thumb 51 when the user 90 holds the grip 10.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a personal authentication device using biometric information, and more particularly to a personal authentication device that improves security.

  Conventionally, personal authentication devices using biometric information have been proposed. As such a personal authentication device, for example, a personal authentication device using fingerprint information is known (see, for example, Patent Document 1).

  In the conventional personal authentication device using fingerprint information, when the user presses the finger pad against the detection unit, the detection unit detects the fingerprint information of the user. The fingerprint information is a fingerprint image or the like. Further, a conventional personal authentication device using fingerprint information extracts feature points from the detected fingerprint information. The feature point is, for example, the shape of a characteristic portion showing a characteristic shape in a fingerprint and position information of the characteristic portion. For example, the extraction unit divides the fingerprint image into a grid pattern (grid shape), detects in which region the characteristic location exists, and extracts the positional information of the characteristic location. The extracted feature points are stored in the storage unit for each individual. That is, when the user is Mr. A, the storage unit stores the extracted feature points as Mr. A's personal information.

  A conventional personal authentication device using fingerprint information includes a personal identification unit that identifies a user by comparing feature points extracted by an extraction unit with feature points stored in a storage unit. Specifically, the individual specifying unit searches the personal information stored in the storage unit for items that match the feature points extracted by the extraction unit (in other words, items that exceed a predetermined similarity). When the personal identification unit finds such personal information, it identifies that the user is an individual having the personal information. For example, when the feature point extracted by the extraction unit matches the personal information of Mr. A stored in the storage unit, the individual specifying unit specifies that the user is Mr. A.

  As a conventional personal authentication device using biometric information, a personal authentication device using blood vessel shape information of a hand (for example, a finger), a personal authentication device using palmprint information, and the like are also known.

Japanese Patent Application Laid-Open No. 07-029003

In recent years, a technique for producing a fingerprint dummy (duplication) has been improved. For this reason, in the conventional personal authentication device that performs personal authentication using fingerprint information, when Mr. B pastes a dummy of Mr. A's fingerprint on the finger pad and performs personal authentication with the conventional personal authentication device, Will recognize Mr. B as Mr. A. That is, in the conventional personal authentication device that performs personal authentication using fingerprint information, Mr. B can easily impersonate Mr. A, and there is a problem that security is poor.
This problem also occurs in a conventional personal authentication device using blood vessel shape information and a conventional personal authentication device using palmprint information. In other words, when Mr. B affixed Mr. A's blood vessel shape or palm print dummy and performed personal authentication with these conventional personal authentication devices, these conventional personal authentication devices recognize Mr. B as Mr. A. End up.

  The present invention has been made in order to solve the above-described problems, and an object of the present invention is to obtain a personal authentication device capable of improving the security as compared with the prior art.

  A personal authentication device according to the present invention includes a detection unit that detects at least one of a user's fingerprint information, palm print information, and blood vessel shape information of a user, and a feature point of the user based on a detection result of the detection unit. The extraction unit to extract, the storage unit that stores the feature points extracted by the extraction unit for each individual, the feature points extracted by the extraction unit and the feature points stored in the storage unit are compared and used A cylindrical shape that can be gripped by the user so that the individual identification part that identifies the person and the fingertip of the last node of the thumb are in contact with the first end, which is one end, and the fingers other than the thumb are in contact with the side part The grip includes: the detection unit; and a first stopper that protrudes from the first end and is caught by a first joint of a thumb when a user grasps the grip. Is.

  In the personal authentication device according to the present invention, the user holds the grip 10 in a state where the first stopper is hooked on the first joint of the thumb. Thereby, every time the user grips the grip, the position of the last node of the thumb is fixed to the substantially same position with respect to the grip. For this reason, each time the user grasps the grip with the first stopper hooked on the first joint of the thumb, each finger and each finger joint are necessarily in substantially the same position. In this state, the detection unit detects at least one of the user's fingerprint information, palm print information, and hand blood vessel shape information. For this reason, if the user is the same person, the detection result of the detection unit and the position of the feature point extracted by the extraction unit from the detection result are substantially the same each time. On the other hand, when the user is a different person, the position of each finger and the joint of each finger in the state of gripping the grip differs for each user. This is because the size of the hand (the size of the palm, the length of each phalanx) is different for each user. That is, the range in which information is detected in the detection range of the detection unit differs between when Mr. A grips the grip and when Mr. B grips the grip.

  For this reason, when Mr. B sticks Mr. A's dummy information (fingerprint, blood vessel shape or palm print dummy) to his hand and grips the grip, the detection unit has the same information as when Mr. A grips the grip. (Fingerprint shape, blood vessel shape, palm print shape) is detected. However, when Mr. B sticks Mr. A's dummy information to his hand and grips the grip, the position of the feature point detected by the detection unit, that is, the position of the feature point extracted by the extraction unit is determined by Mr. A. It is different from the case of holding. This is because Mr. A and Mr. B have different hand sizes. Therefore, in the personal authentication device according to the present invention, even if Mr. B sticks Mr. A's dummy information to his hand and grasps the grip, the user recognizes that he is not Mr. A because of the difference in the position of the feature points. be able to. That is, in the personal authentication device according to the present invention, Mr. B can prevent Mr. B from impersonating Mr. A even if Mr. B sticks Mr. A's dummy information to his hand and holds the grip. Therefore, the personal authentication device according to the present invention can improve security.

It is the schematic which shows the personal authentication apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows an example of the grip of the personal authentication apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows the fingerprint image detected by the detection part of the personal authentication apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows the fingerprint image detected by the detection part of the personal authentication apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows another example of the grip of the personal authentication apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows another example of the grip of the personal authentication apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows another example of the grip of the personal authentication apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows another example of the grip of the personal authentication apparatus which concerns on Embodiment 1 of this invention. It is a perspective view which shows another example of the grip of the personal authentication apparatus which concerns on Embodiment 1 of this invention. It is the schematic which shows the personal authentication apparatus which concerns on Embodiment 2 of this invention. It is a figure which shows the image image | photographed with the 1st imaging device of the personal authentication apparatus which concerns on Embodiment 2 of this invention. It is the schematic which shows another example of the personal authentication apparatus which concerns on Embodiment 2 of this invention. It is a figure which shows the image image | photographed with the 2nd imaging device of the personal authentication apparatus shown in FIG.

Embodiment 1 FIG.
FIG. 1 is a schematic diagram showing a personal authentication device according to Embodiment 1 of the present invention. Moreover, FIG. 2 is a figure which shows an example of the grip of the personal authentication apparatus which concerns on Embodiment 1 of this invention. FIG. 2A is a perspective view of the grip 10. FIG. 2B is a side view showing the vicinity of the upper end portion 10 a of the grip 10. FIG. 2C is a side view showing a state where the hand 50 of the user 90 holds the grip 10.
The personal authentication device 100 according to the first embodiment includes a grip 10 and a control device 40.

The cylindrical grip 10 is gripped by the user 90. The grip 10 has a finger pad 51b of the distal end 51a of the thumb 51 in contact with the upper end 10a, and fingers other than the thumb 51 (forefinger 52, middle finger 53, ring finger 54, little finger 55) are in contact with the side surface 10b. It is held by the user 90. The cross-sectional shape perpendicular to the axial direction of the grip 10 (transverse cross-sectional shape in FIG. 2B) is not particularly limited as long as it is a shape that the user 90 can easily grip, and is substantially elliptical or substantially oval. The shape may be a substantially oval shape. The grip 10 includes a first stopper 11 that protrudes upward from the upper end portion 10a, for example.
Here, the upper end portion 10a corresponds to the first end portion of the present invention.

  The first stopper 11 is hooked on the first joint 51 c of the thumb 51 when the user 90 grips the grip 10. For this reason, the first stopper 11 has a cross-sectional shape with a sharp tip at an acute angle so that the first stopper 11 is easily caught by the first joint 51 c of the thumb 51. By configuring the grip 10 in this manner, the first stopper 11 is caught by the first joint 51 c of the thumb 51 when the user 90 grips the grip 10. That is, every time the user 90 grips the grip 10, the position of the terminal joint 51 a of the thumb 51 is fixed to the grip 10 at the substantially same position. For this reason, each time the user 90 grips the grip 10 with the first stopper 11 hooked on the first joint 51c of the thumb 51, the finger and the joint of each finger are necessarily in substantially the same position. The finger pad 51b of the end node 51a of the thumb 51 securely contacts (is prevented from floating) the upper end portion 10a, and the position of the end node 52a of the thumb 51 is reliably fixed so as to protrude from the upper end portion 10a of the grip 10. The height of the first stopper 11 is preferably 1.5 mm to 3 mm.

  The grip 10 includes a detection unit 30 that detects fingerprint information of the user 90. Although at least one detection unit 30 provided in the grip 10 is sufficient, in the first embodiment, as the detection unit 30, an end side detection unit 31 provided in the upper end portion 10a of the grip 10 and the grip 10 are provided. And a side surface side detection unit 32 provided on the side surface portion 10b. The end side detection unit 31 detects fingerprint information (such as a fingerprint image) of the finger pad 51 b of the terminal node 51 a of the thumb 51. The side surface side detection unit 32 detects fingerprint information (such as a fingerprint image) of a finger that is in contact with the side surface portion 10 b of the grip 10. In the first embodiment, the side surface side detection unit 32 is provided at a position facing the terminal node 52 a of the index finger 52 and detects fingerprint information of the finger pad 52 b of the terminal node 52 a of the index finger 52. Note that a plurality of side surface side detection units 32 may be provided, and fingerprint information may be detected from a plurality of fingers that are in contact with the side surface portion 10 b of the grip 10.

  Here, the detection unit 30 used for detection of fingerprint information (such as a fingerprint image) is not particularly limited, and various known detection units can be used.

  The control device 40 performs personal authentication based on the fingerprint information detected by the detection unit 30. The control device 40 is configured with dedicated hardware or a CPU (Central Processing Unit, central processing unit, processing unit, arithmetic unit, microprocessor, microcomputer, processor) that executes a program stored in a memory. .

  When the control device 40 is dedicated hardware, the control device 40 may be, for example, a single circuit, a composite circuit, an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a combination of these. Applicable. Each functional unit realized by the control device 40 may be realized by individual hardware, or each functional unit may be realized by one piece of hardware.

  When the control device 40 is a CPU, each function executed by the control device 40 is realized by software, firmware, or a combination of software and firmware. Software and firmware are described as programs and stored in a memory. The CPU implements each function of the control device 40 by reading and executing a program stored in the memory. Here, the memory is a non-volatile or volatile semiconductor memory such as a RAM, a ROM, a flash memory, an EPROM, or an EEPROM.

  Note that a part of the functions of the control device 40 may be realized by dedicated hardware, and a part may be realized by software or firmware.

  The control device 40 according to the first embodiment includes an extraction unit 41, a storage unit 42, and an individual identification unit 43 as functional units. The extraction unit 41 extracts the feature point of the user 90 from the fingerprint information (detection result) detected by the detection unit 30. The storage unit 42 stores the feature points extracted by the extraction unit 41 for each individual. The personal identification unit 43 compares the feature points extracted by the extraction unit 41 with the feature points stored in the storage unit 42 and identifies the user 90 (identifies who the user 90 is) It is. As described above, the detection unit 30 used for detecting fingerprint information (such as a fingerprint image) is not particularly limited, and various known detection units can be used. For this reason, the feature point extraction method of the extraction unit 41 is not particularly limited, and various known feature point extraction methods can be used.

  Moreover, the personal authentication device 100 according to the first embodiment uses the battery 45 as a power source. Among the configurations of the personal authentication device 100, configurations that operate when supplied with power (such as the control device 40 and the detection unit 30) are supplied with power from the battery 45. That is, the personal authentication device 100 is not connected to a commercial power source. In recent years, when a PC (personal computer) or the like is connected to a commercial power source, there has been a case where hacking occurs via the power supply wiring of the commercial power source. Since personal authentication device 100 according to the first embodiment uses battery 45 as a power source, such hacking can be prevented and security can be improved.

  The personal authentication device 100 according to the first embodiment includes a box 1 in which a grip 10 is disposed. An opening is formed on one side surface of the box 1. The user 90 inserts the hand 50 into the box 1 through the opening and grips the grip 10, and the fingerprint information is detected by the detection unit 30. By providing the box 1, the influence of ambient light can be suppressed when fingerprint information is detected by the detection unit 30.

  Next, the operation of the personal authentication device 100 configured as described above will be described.

[Memory operation]
In order to perform personal authentication, first, it is necessary to store individual feature points in the storage unit 42. For this reason, when the user 90 uses the personal authentication device 100 for the first time, the feature points of the user 90 are stored in the storage unit 42 as follows.

FIG. 3 is a diagram showing a fingerprint image detected by the detection unit of the personal authentication device according to Embodiment 1 of the present invention. FIG. 3 shows a fingerprint image detected by any one of the detection units 30 (the end side detection unit 31 or the side surface side detection unit 32).
The user 90 inserts the hand 50 into the box 1 through an opening formed on one side surface of the box 1 and grips the grip 10. At this time, the user 90 hooks the first stopper 11 to the first joint 51c of the thumb 51, the finger pad 51b of the terminal node 51a of the thumb 51 contacts the upper end portion 10a, and fingers other than the thumb 51 touch the side surface portion 10b. The grip 10 is gripped so as to come into contact.

  When the user 90 grips the grip 10 in this manner, the finger pad 51b of the terminal node 51a of the thumb 51 contacts (presses) the end side detection unit 31, and the finger pad 52b of the terminal node 52a of the index finger 52 faces the side surface. It contacts (becomes pressed against) the part-side detection unit 32. In this state, the end side detection unit 31 detects the fingerprint information of the finger pad 51 b of the terminal node 51 a of the thumb 51. Further, the side surface side detection unit 32 detects fingerprint information of the finger pad 52 b of the terminal node 52 a of the index finger 52. The detection unit 30 (the end side detection unit 31 and the side surface side detection unit 32) detects, for example, an image of a fingerprint 60 as shown in FIG. 3 as fingerprint information.

  The extraction unit 41 extracts feature points from the detection result of the detection unit 30. The extraction unit 41 extracts, for example, the shape of a characteristic location showing a characteristic shape in the fingerprint 60 and the position information of the characteristic location as the feature point 60a. At this time, for example, the extraction unit 41 divides the image of the fingerprint 60 into a grid pattern (grid pattern), detects in which region (the grid area) the characteristic part exists, and obtains position information of the characteristic point 60a. Extract. Finally, the storage unit 42 stores the feature point 60a extracted by the extraction unit 41 as the feature point 60a of the user 90. For example, when the user 90 is Mr. A, the storage unit 42 stores the feature point 60a extracted by the extraction unit 41 as Mr. A's personal information. In FIG. 3, only one feature point 60a is extracted as the feature point, but a plurality of feature points may be extracted.

[Personal authentication operation]
When performing personal authentication, the user 90 inserts the hand 50 into the box 1 through the opening formed in one side surface of the box 1 and grips the grip 10 in the same manner as in the storage operation. Further, the detection unit 30 (the end side detection unit 31 and the side surface side detection unit 32) detects the fingerprint information (image of the fingerprint 60) of the user 90 in the same manner as in the storage operation. Further, the extraction unit 41 extracts the feature point 60a from the fingerprint information of the user 90 detected by the detection unit 30 in the same manner as in the storage operation.

  The personal identification unit 43 compares the feature point 60a extracted by the extraction unit 41 with the feature point 60a stored in the storage unit 42, and identifies who the user 90 is. Specifically, the personal identification unit 43 matches the feature point 60a extracted by the extraction unit 41 from the personal information stored in the storage unit 42 (in other words, exceeds the predetermined similarity). Search for. When the personal identification unit 43 finds such personal information, it identifies that the user 90 is an individual having the personal information. For example, when the feature point 60 a extracted by the extraction unit 41 matches the personal information of Mr. A stored in the storage unit 42, the individual specifying unit 43 specifies that the user 90 is Mr. A. Further, for example, when the feature point 60 a extracted by the extraction unit 41 does not match any personal information stored in the storage unit 42, the personal identification unit 43 stores the feature point 60 a in the storage unit 42. A person who is not registered (in other words, a person who is not registered in the personal authentication device 100).

  As described above, each time the user 90 grips the grip 10 with the first stopper 11 hooked to the first joint 51c of the thumb 51, the fingers and the joints of the fingers are in substantially the same position. For this reason, the position shift of the finger pad 51b of the terminal node 51a of the thumb 51 with respect to the end side detection unit 31, which occurs every time the user 90 grips the grip 10, can be suppressed. Moreover, the position shift of the finger pad 52b of the terminal node 52a of the index finger 52 with respect to the side surface side detection unit 32, which occurs every time the user 90 grips the grip 10, can be suppressed. That is, it is possible to suppress the positional deviation of the feature points in the fingerprint that occurs each time the user 90 grips the grip 10. Therefore, the personal authentication apparatus 100 can perform personal authentication with high accuracy by the above-described personal authentication.

  Here, in recent years, a technique for producing a fingerprint dummy (duplication) has been improved. For this reason, in the conventional personal authentication device that performs personal authentication using fingerprint information, when Mr. B pastes a dummy of Mr. A's fingerprint on the finger pad and performs personal authentication with the conventional personal authentication device, Will recognize Mr. B as Mr. A. That is, Mr. B can impersonate Mr. A. On the other hand, the personal authentication device 100 according to the first embodiment can prevent such impersonation as follows, and can improve the security of the personal authentication device 100.

  FIG. 4 is a diagram showing a fingerprint image detected by the detection unit of the personal authentication device according to Embodiment 1 of the present invention. FIG. 4 shows a fingerprint image detected by any one of the detection units 30 (the end side detection unit 31 or the side surface side detection unit 32). FIG. 4A is a fingerprint image when Mr. A uses the personal authentication device 100. FIG. 4B is a fingerprint image when Mr. B uses a personal authentication device 100 with Mr. A's fingerprint dummy attached to his finger pad.

  When the user 90 grips the grip 10 in a state where the first stopper 11 is hooked on the first joint 51c of the thumb 51, if the user 90 is the same person, each finger and each finger joint are approximately each time. It becomes the same position. On the other hand, when the user 90 is a different person, the position of each finger and the joint of each finger is different for each user. This is because the size of the hand 50 (the size of the palm, the length of each phalanx) is different for each user 90. That is, as shown in FIG. 4, when Mr. A grips the grip 10 and when Mr. B grips the grip 10, fingerprint information is detected within the fingerprint information detection range in the detection unit 30. The range is different.

  Therefore, as can be seen from FIGS. 4 (a) and 4 (b), when Mr. B affixed Mr. A's fingerprint dummy to his finger pad and grips the grip 10, the detection unit 30 A fingerprint 60 having the same shape as that when the grip 10 is gripped is detected. However, as can be seen from FIGS. 4A and 4B, when Mr. B applies a dummy of Mr. A's fingerprint to the finger pad and grips the grip 10, the fingerprint 60 detected by the detection unit 30 is detected. The position of the feature point 60a is different from the case where Mr. A holds the grip 10 (that is, the position of the feature point 60a extracted by the extraction unit 41). This is because Mr. A and Mr. B have different hand sizes. Therefore, in personal authentication device 100 according to the first embodiment, even if Mr. B sticks Mr. A's fingerprint dummy on his finger pad and grips grip 10, the difference in position of feature point 60a causes the user to It can be recognized that 90 is not Mr. A. In other words, in personal authentication device 100 according to the first embodiment, Mr. B can prevent Mr. B from impersonating Mr. A even if Mr. B attaches a dummy of Mr. A's fingerprint to his finger pad and grips grip 10. . Therefore, the personal authentication device 100 according to the first embodiment can improve security.

  By the way, in the conventional personal authentication device using fingerprint information, the pressure when the user presses the finger pad against the detection unit is likely to change every time. And if the pressure when pressing a finger pad on a detection part differs, the position of a feature point will also differ. For this reason, an authentication error occurs due to pressure fluctuation when the finger pad is pressed against the detection unit. That is, when Mr. A detects fingerprint information at the detection unit and extracts feature points at the extraction unit, the individual identification unit cannot identify the user as Mr. A. On the other hand, the strength with which a human grips the grip 10 is substantially the same every time. For this reason, as in the first embodiment, by providing the grip 10 with the detection unit 30 that detects fingerprint information, it is possible to suppress the positional deviation of the feature points due to pressure fluctuations when the finger pad is pressed against the detection unit 30. . Therefore, the personal authentication device 100 according to the first embodiment can also improve the personal authentication accuracy in this respect.

  In the first embodiment, the detection unit 30 detects the fingerprint information. However, the detection unit 30 may detect the blood vessel shape information of the hand 50. At this time, the detection unit 30 used for detecting the blood vessel shape information is not particularly limited, and various known detection units can be used. Also, the feature point extraction method of the extraction unit 41 is not particularly limited, and various known feature point extraction methods can be used. Even when the grip 10 is provided with the detection unit 30 for detecting blood vessel shape information, the security of the personal authentication device 100 can be improved. Even if Mr. B applies a dummy of Mr. A's blood vessel shape information to his hand and grips the grip 10, the position of the feature point differs from Mr. A due to the difference in the size of the hand 50, and the user 90 is not Mr. A. This is because it can be recognized.

  Alternatively, the detection unit 30 may be provided at a position facing the palm, and the palm print information may be detected by the detection unit 30. At this time, the detection unit 30 used for detecting palmprint information is not particularly limited, and various known detection units can be used. Also, the feature point extraction method of the extraction unit 41 is not particularly limited, and various known feature point extraction methods can be used. Even when the grip 10 is provided with the detection unit 30 that detects palmprint information, the security of the personal authentication device 100 can be improved. Even if Mr. B applies a dummy of Mr. A's palm print information to his hand and grasps the grip 10, the position of the feature point differs from Mr. A due to the size of the hand 50, and the user 90 is not Mr. A. This is because it can be recognized.

  Moreover, you may further provide the following stoppers in the grip 10 mentioned above. It is possible to further suppress the positional deviation of the feature points that occurs each time when the detection unit 30 detects, and to further obtain the above-described personal authentication accuracy improvement effect and security improvement effect.

  FIG. 5 is a diagram showing another example of the grip of the personal authentication device according to Embodiment 1 of the present invention. FIG. 5A is a perspective view of the grip 10. FIG. 5B is a cross-sectional view in which the vicinity of the index finger 52 is cut in the horizontal direction in a state where the hand 50 of the user 90 holds the grip 10.

  The grip 10 shown in FIG. 5 includes a second stopper 12 in addition to the first stopper 11 shown in FIG. In the case where the grip 10 includes a side surface side detection unit 32 that detects fingerprint information or blood vessel shape information of a finger that contacts the side surface portion 10b, the second stopper 12 may be provided. The second stopper 12 protrudes from the side surface portion 10b so as to extend in the axial direction of the grip 10 (vertical direction in FIG. 5A). The second stopper 12 is hooked to at least one second joint of a finger whose information is detected by the side surface side detection unit 32 when the user 90 grips the grip 10. For this reason, the second stopper 12 has a cross-sectional shape in which the tip end portion is sharpened so that the second stopper 12 is easily caught by the second joint of the finger that contacts the side surface portion 10b. 5B shows a state in which the second stopper 12 is hooked on the second joint 52c of the index finger 52. FIG.

  By hooking the second stopper 12 to the second joint of the finger that contacts the side surface portion 10b and gripping the grip 10, the position of the finger contacting the side surface portion 10b of the grip 10 in the circumferential direction of the grip 10 is more reliably fixed. it can. That is, the position shift of the finger in contact with the side surface portion 10b of the grip 10 with respect to the side surface portion side detection unit 32 in the circumferential direction of the grip 10 can be further suppressed. For this reason, it is possible to further suppress the positional deviation of the feature points that occurs each time the detection is performed by the side surface side detection unit 32, and it is possible to further obtain the above-described personal authentication accuracy improvement effect and security improvement effect. In order to securely fix the finger contacting the side surface portion 10b of the grip 10 so that the finger contacts the side surface portion 10b (so as not to float) and to securely fix the position of the finger contacting the side surface portion 10b, the side surface portion of the grip 10 is used. The height of the second stopper 12 protruding from 10b is preferably 3 mm to 5 mm.

  FIG. 6 is a diagram showing still another example of the grip of the personal authentication device according to Embodiment 1 of the present invention. FIG. 6A is a perspective view of the grip 10. FIG. 6B is a plan view of the grip 10. FIG. 6C is a side view showing a state where the hand 50 of the user 90 holds the grip 10.

  The grip 10 shown in FIG. 6 includes a third stopper 13 in addition to the first stopper 11 shown in FIG. In FIG. 6, the grip 10 is also provided with the second stopper 12 shown in FIG. When the grip 10 includes a side surface side detection unit 32 that detects fingerprint information or blood vessel shape information of a finger that contacts the side surface portion 10b, the third stopper 13 may be provided. The third stopper 13 protrudes from the side surface portion 10b so as to extend in the circumferential direction of the grip 10, for example. The third stopper 13 comes into contact with at least one side portion of the finger whose information is detected by the side surface side detection unit 32 when the user 90 grips the grip 10. In FIG. 6 (c), the lower side of the index finger 52 is in contact.

  The third stopper 13 is brought into contact with the side of the finger that contacts the side surface 10b and the grip 10 is gripped, so that the position of the finger in contact with the side 10b of the grip 10 in the axial direction of the grip 10 is more reliably fixed. it can. That is, the positional deviation of the finger in contact with the side surface portion 10b of the grip 10 with respect to the side surface portion side detection unit 32 in the axial direction of the grip 10 can be further suppressed. For this reason, it is possible to further suppress the positional deviation of the feature points that occurs each time the detection is performed by the side surface side detection unit 32, and it is possible to further obtain the above-described personal authentication accuracy improvement effect and security improvement effect. In order to securely fix the position of the finger in contact with the side surface portion 10b, the height of the third stopper 13 protruding from the side surface portion 10b of the grip 10 is preferably 7 mm or more.

  FIG. 7 is a diagram showing still another example of the grip of the personal authentication device according to Embodiment 1 of the present invention. FIG. 7A is a perspective view of the grip 10. FIG. 7B is a plan view of the grip 10. FIG. 7C is a plan view showing a state in which the user 90 puts the finger pad 51 b of the terminal joint 51 a of the thumb 51 on the upper end portion 10 a of the grip 10.

  The grip 10 shown in FIG. 7 includes a fourth stopper 14 in addition to the first stopper 11 shown in FIG. When the grip 10 includes the end side detection unit 31 that detects fingerprint information or blood vessel shape information of the thumb 51 that contacts the upper end 10a, the fourth stopper 14 may be provided on the upper end 10a. The fourth stopper 14 protrudes upward from the upper end portion 10a, for example. Further, the fourth stopper 14 is located at a position facing both side portions of the end node 51a of the thumb 51 when the user 90 grips the grip 10 so that the finger pad 51b of the end node 51a of the thumb 51 contacts the upper end portion 10a. Is provided.

  By providing the grip 10 with the fourth stopper 14, the position of the terminal joint 51 a of the thumb 51 can be more reliably fixed. That is, the lateral displacement of the thumb 51 with respect to the end side detection unit 31 can be further suppressed. For this reason, it is possible to further suppress the misalignment of the feature points that occurs each time the detection is performed by the end side detection unit 31, and to further obtain the above-described effect of improving the personal authentication accuracy and the effect of improving the security.

FIG. 8 is a diagram showing still another example of the grip of the personal authentication device according to Embodiment 1 of the present invention. FIG. 8A is a perspective view of the grip 10. FIG. 8B is a plan view of the grip 10. FIG. 8C is a side view showing a state in which the user 90 puts the finger pad 51 b of the terminal joint 51 a of the thumb 51 on the upper end portion 10 a of the grip 10.
The grip 10 shown in FIG. 8 is provided with a fifth stopper 15 at the upper end portion 10a of the grip 10 shown in FIG. The fifth stopper 15 protrudes upward from the upper end portion 10a, for example. Further, the fifth stopper 15 is provided at an end portion on the opposite side to the first stopper 11 when the upper end portion 10 a of the grip 10 is viewed in a plan view. That is, the fifth stopper 15 is provided at a position facing the tip of the thumb 51 when the user 90 grips the grip 10.

  In the case of a user 90 with a large hand 50, when gripping the grip 10 in a state where the first stopper 11 is hooked on the first joint 51c of the thumb 51, the finger pad 51b of the distal end 51a of the thumb 51 is the upper end 10a (in other words, Then, it may protrude from the detection range of the end side detection unit 31, and fingerprint information or blood vessel shape information may not be detected from the terminal node 51 a of the thumb 51. In this case, the user 90 may grip the grip 10 by bringing the tip of the thumb 51 into contact with the fifth stopper 15. Thereby, fingerprint information or blood vessel shape information can be detected by the end side detection unit 31. Further, when the fifth stopper 15 functions as a substitute for the first stopper 11 and the user 90 grips the grip 10, each finger and the joint of each finger are in the substantially same position each time. For this reason, even if the tip of the thumb 51 is brought into contact with the fifth stopper 15 and the grip 10 is gripped, the above-described personal authentication accuracy improvement effect and security improvement effect can be obtained.

FIG. 9 is a perspective view showing still another example of the grip of the personal authentication device according to Embodiment 1 of the present invention.
The grip 10 shown in FIG. 9 includes a biological sensor 2 that detects sweat or the like at a position where the user 90 comes into contact with the hand 50 when the grip 90 is gripped. For example, suppose that Mr. B cuts Mr. A's hand 50 and causes the hand 50 to grip the grip 10. In this case, if the grip 10 does not include the biometric sensor 2, Mr. B can make the personal authentication device 100 think that he is Mr. A. That is, Mr. B can impersonate Mr. A. On the other hand, when the grip 10 includes the biological sensor 2, it is possible to detect whether the hand holding the grip 10 is the surviving human hand 50. Therefore, when the grip 10 includes the biometric sensor 2, even if Mr. B cuts Mr. A's hand 50 and causes the hand 50 to grip the grip 10, Mr. You can prevent it from appearing to be. That is, Mr. B can be prevented from impersonating Mr. A. For this reason, the security of the personal authentication device 100 can be further improved.

  Note that the second stopper 12 to the fifth stopper 15 and the biosensor 2 described above may be provided alone in the grip 10, and a plurality (for example, all) of them may be provided in the grip 10. .

Embodiment 2. FIG.
In the first embodiment, personal authentication is performed by a method using at least one of fingerprint information, blood vessel shape information, and palm print information. The personal authentication accuracy and security of the personal authentication device 100 can be further improved by using a personal authentication method different from the method together. For example, as shown below, the personal authentication accuracy and security of the personal authentication device 100 are further improved by performing personal authentication using an image obtained by photographing the hand 50 of the user 90 holding the grip 10 from the outside. Can be made. In the second embodiment, items that are not particularly described are the same as those in the first embodiment, and the same functions and configurations are described using the same reference numerals.

FIG. 10 is a schematic diagram showing a personal authentication apparatus according to Embodiment 2 of the present invention.
The personal authentication device 100 according to the second embodiment includes a photographing device 20 in addition to the configuration described in the first embodiment. The photographing device 20 is a camera or a scanner, for example, and photographs the hand 50 of the user 90 in a state of gripping the grip 10 from the outside. Specifically, the personal authentication device 100 according to the second embodiment, as the photographing device 20, performs first photographing for photographing the hand 50 of the user 90 from the thumb 51 side when the user 90 is gripping the grip 10. A device 21 is included. For example, the first photographing device 21 is attached to the lower part of the upper wall of the box 1 in which the user 90 inserts the hand 50 so as to photograph the lower part. That is, the first photographing device 21 photographs the hand 50 of the user 90 in the box 1 from above.

  Next, the operation of the personal authentication device 100 configured as described above will be described. Note that the method of personal authentication using the feature points extracted by the extraction unit 41 (the operations of the storage unit 42 and the personal identification unit 43) is the same as described above. Therefore, hereinafter, an operation in which the extraction unit 41 extracts the feature point of the user 90 from the image photographed by the photographing device 20 will be described.

FIG. 11 is a diagram showing an image photographed by the first photographing device of the personal authentication device according to the second embodiment of the present invention.
The user 90 inserts the hand 50 into the box 1 through an opening formed on one side surface of the box 1 and grips the grip 10 as described in the first embodiment. Then, the first photographing device 21 photographs the hand 50 of the user 90 in a state where the grip 10 is gripped. Thereby, the image shown in FIG. 11 is obtained.

  The extraction unit 41 extracts the feature point 61 from the image of the fist of the user 90 (the hand 50 in the state of gripping the grip 10) photographed by the first photographing device 21. The feature point 61 is, for example, at least one of the shape and position of a wrinkle formed at a finger joint, the shape and position of a wrinkle 62 formed between the thumb 51 and the index finger 52, the position of a finger joint, and the position of a fingertip. It is. The wrinkles that can be formed on the finger joint include, for example, a wrinkle 63 that can be the first joint of the index finger 52, a wrinkle 64 that can be the second joint of the index finger 52, and a wrinkle 65 that can be the third joint of the index finger 52. The position of the finger joint is the protruding position of the finger joint, for example, the convex portion 66 of the third joint of the middle finger 53, the convex portion 67 of the second joint of the index finger 52, and the convexity of the third joint of the index finger 52. Part 68 and the like. Note that the feature point 61 described above is merely an example.

  Further, the extraction unit 41 extracts the position of the feature point 61 as follows. Specifically, as illustrated in FIG. 11, the extraction unit 41 divides the image of the fist of the user 90 photographed by the first photographing device 21 into a grid pattern (grid shape). Then, the extraction unit 41 detects in which region (square) the feature point 61 exists, and extracts position information of the feature point 61.

  Here, the image of the hand 50 in the state of gripping the grip 10, which is the extraction range of the feature point 61 of the personal authentication device 100, is larger than the fingerprint detection range. For this reason, when the image of the hand 50 in the state of holding the grip 10 is divided into the same number as when the conventional personal authentication device using fingerprints divides the fingerprint detection range, each of the divided areas is one by one. Can be made larger than in the case of a conventional personal authentication device using fingerprints. Further, the strength with which the human grips the grip 10 is substantially the same every time. For this reason, the feature point 61 which can be made to the hand 50 in the state which is holding the grip 10 becomes a substantially the same position every time. For this reason, the personal authentication device 100 according to the second embodiment can reduce personal authentication errors and can further improve the personal authentication accuracy.

  Further, in the personal authentication device 100 according to the second embodiment using the grip 10, the security of the personal authentication device 100 can be improved. Specifically, the shape and position of the feature point 61 that can be formed on the hand 50 when the grip 10 is gripped differ depending on the shape of the grip 10. Therefore, in order to impersonate Mr. A, Mr. B tries to make a dummy (replica) of Mr. A's hand 50. If a grip having the same shape as the grip 10 is not prepared, the dummy of Mr. A's hand 50 is It cannot be made. For this reason, in personal authentication device 100 using grip 10 according to the second embodiment, Mr. B can be prevented from impersonating Mr. A, and security can be improved.

  When the third stopper 13 is provided on the grip 10 and the third stopper 13 is too high, the third stopper 13 protrudes from the finger when the first photographing device 21 photographs the fist of the user 90. . For this reason, in order to prevent the third stopper 13 from protruding from the finger when the fist of the user 90 is photographed by the first photographing device 21, the third stopper 13 protruding from the side surface portion 10b of the grip 10 is used. The height is preferably 10 mm or less.

FIG. 12 is a schematic diagram showing another example of the personal authentication device according to Embodiment 2 of the present invention. FIG. 13 is a diagram showing an image photographed by the second photographing device of the personal authentication device shown in FIG.
As illustrated in FIG. 12, the personal authentication device 100 may include a second photographing device 22 as the photographing device 20 in addition to the configuration of the personal authentication device 100 illustrated in FIG. 10. As shown in FIG. 13, in the state where the user 90 is gripping the grip 10, the second imaging device 22 holds the hand 50 of the user 90 from the side facing the index finger 52, the middle finger 53, the ring finger 54 and the little finger 55. Take a picture. In other words, the second photographing device 22 photographs the hand 50 of the user 90 in the box 1 from the side surface portion 10 b side of the grip 10. Thereby, the extraction part 41 can extract the feature point 61 of the user 90 also from the image image | photographed with the 2nd imaging device 22. FIG. For this reason, more feature points 61, which are information for specifying an individual, can be extracted, and security at the time of personal authentication can be improved.

  1 box, 2 biological sensor, 10 grip, 10a upper end (first end), 10b side surface, 11 first stopper, 12 second stopper, 13 third stopper, 14 fourth stopper, 15 fifth stopper, 20 Imaging device, 21 First imaging device, 22 Second imaging device, 30 Detection unit 31 End side detection unit, 32 Side surface side detection unit, 40 Control device, 41 Extraction unit, 42 Storage unit, 43 Personal identification unit, 45 Battery, 50 hands, 51 thumb, 51a terminal, 51b finger pad, 51c first joint, 52 index finger, 52a terminal, 52b finger pad, 52c second joint, 53 middle finger, 54 ring finger, 55 little finger, 60 fingerprint, 60a , 61 Feature points, 62 Wrinkles, 63 Wrinkles, 64 Wrinkles, 65 Wrinkles, 66 Convex parts, 67 Convex parts, 68 Convex parts, 90 Use , 100 personal authentication device.

A personal authentication device according to the present invention includes a detection unit that detects at least one of a user's fingerprint information, palm print information, and blood vessel shape information of a user, and a feature point of the user based on a detection result of the detection unit. The extraction unit to extract, the storage unit that stores the feature points extracted by the extraction unit for each individual, the feature points extracted by the extraction unit and the feature points stored in the storage unit are compared and used A cylindrical shape that can be gripped by the user so that the individual identification part that identifies the person and the fingertip of the last node of the thumb are in contact with the first end, which is one end, and the fingers other than the thumb are in contact with the side part The grip includes at least a side surface side detection unit that detects fingerprint information or blood vessel shape information of a finger that contacts the side surface as the detection unit, and protrudes from the first end. When the user grasps the grip, it is caught by the first joint of the thumb That a first stopper projecting from the side surface portion so as to extend in the axial direction of the grip, when a user is holding the grip, the finger is detected fingerprint information or vessel shape information by the side surface portion detector And a second stopper that is caught by at least one second joint .

Claims (10)

A detection unit that detects at least one of user fingerprint information, palm print information, and blood vessel shape information of a hand;
An extraction unit that extracts a feature point of the user from the detection result of the detection unit;
A storage unit for storing the feature points extracted by the extraction unit for each individual;
Comparing the feature points extracted by the extraction unit with the feature points stored in the storage unit, and specifying a user;
A cylindrical grip that is gripped by the user so that the fingertip of the last node of the thumb is in contact with the first end, which is one end, and the fingers other than the thumb are in contact with the side surface;
With
The grip is
The detection unit;
A first stopper protruding from the first end and hooked to a first joint of a thumb when a user grips the grip;
A personal authentication device comprising: The grip is
The detection unit includes at least a side surface side detection unit that detects fingerprint information or blood vessel shape information of a finger that contacts the side surface,
At least one second finger of the finger that protrudes from the side surface so as to extend in the axial direction of the grip and whose fingerprint information or blood vessel shape information is detected by the side surface side detection unit when the user grips the grip. The personal authentication device according to claim 1, further comprising a second stopper that is caught by the joint. The grip is
The detection unit includes at least a side surface side detection unit that detects fingerprint information or blood vessel shape information of a finger that contacts the side surface,
At least one side of a finger that protrudes from the side surface portion so as to extend in the circumferential direction of the side surface portion, and when fingerprint information or blood vessel shape information is detected by the side surface portion side detection unit when the user grips the grip The personal authentication device according to claim 1, further comprising a third stopper that contacts the portion. The grip is
The detection unit includes at least an end side detection unit that detects fingerprint information or blood vessel shape information of the distal end of the thumb that contacts the first end, as the detection unit,
4. The fourth stopper according to claim 1, further comprising a fourth stopper that protrudes from the first end portion and faces both side portions of the thumb when the user grips the grip. 5. The personal authentication device described in 1. The grip is
The detection unit includes at least an end side detection unit that detects fingerprint information or blood vessel shape information of the distal end of the thumb that contacts the first end, as the detection unit,
5. The fifth stopper according to claim 1, further comprising a fifth stopper that protrudes from the first end and faces the tip of the thumb when a user grips the grip. The personal authentication device described in 1. A photographing device for photographing the user's hand in a state of gripping the grip from the outside,
The photographing device includes a first photographing device that photographs a user's hand from the thumb side in the axial direction of the grip in a state where the user is gripping the grip,
The personal identification device according to claim 1, wherein the extraction unit extracts a feature point of a user from an image photographed by the photographing device.   The said imaging device is provided with the 2nd imaging device which image | photographs a user's hand from the said side part side of the said grip in the state in which the user is holding the said grip. Personal authentication device. The feature point extracted by the extraction unit from the image photographed by the photographing device is:
7. The shape and position of a wrinkle formed on a finger joint, the shape and position of a wrinkle formed between a thumb and an index finger, the position of a finger joint, and the position of a fingertip, Or the personal authentication apparatus of Claim 7. The grip is
The personal authentication device according to any one of claims 1 to 8, further comprising a biometric sensor at a position that comes into contact with a user's hand when the user holds the grip.   The personal authentication apparatus according to any one of claims 1 to 9, wherein a battery is used as a power source.

Images