JP2016184374A - Authentication device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an authentication device that offers reduced risk of social engineering attacks and good flexibility in terms of authentication motion made by a person being authenticated.SOLUTION: An authentication device Ar performs personal authentication on the basis of biological information comprising physical features and behavioral features of a person to be authenticated, and includes; a registered depression pattern storage 26 that stores first biological information Ppr of one or more persons to be authenticated registered for authentication; a fingerprint detector 20 for detecting a physical feature; a depression force detector 10 for detecting a behavioral feature; a depression pattern generator 14 configured to generate second biological information Ppd by combining the detected physical and behavioral features; a depression pattern comparator 30 that compares the first biological information Ppr and the second biological information Ppd; and an authenticator 32 that performs personal authentication on the basis of a result of the comparison.SELECTED DRAWING: Figure 7

Description

  The present invention relates to an authentication device that authenticates an individual based on biometric information.

  For security and security, there is a strong need for a security system that prevents outsiders other than specific authorized individuals from accessing restricted places, systems, institutions, information, and equipment. . For this purpose, an authentication system for identifying whether or not a person trying to access is an authorized and authorized person plays a very important role. The authentication system is basically a combination of a lock that has been adopted for a long time and that is externally denied access and a key that can be unlocked in conformity with the lock. No matter how strong the lock is, if a key is stolen or copied, unauthorized access by unauthorized persons cannot be prevented. Further, there is a problem that even if a key is lost, even a legitimate person cannot access it.

  Personal authentication systems using information passwords as keys instead of such keys have been widely used. In the authentication system, a strong lock mechanism that is electrically driven and controlled is used as a lock, and the identity authentication is performed by matching the input password with a pre-registered password. However, passwords are often forgotten by the person and cannot be authenticated, or are often illegally authenticated by others due to leakage or theft. Note that unlike a key as a password, a password is not known when it is leaked or stolen, it is not always known when it is fraudulently authenticated, and it may not be noticed until the fact of fraudulent authentication is revealed. Many.

  Therefore, biometric authentication using as a key biometric information representing an individual's physical characteristics and behavioral characteristics, which has a very low risk of being forgotten or lost, is becoming widespread. In biometric authentication, biometric information is registered in advance, and when the biometric information acquired by the sensor at the time of authentication matches the preregistered biometric information, the person is authenticated. Below, the biometric authentication currently proposed is demonstrated easily with an example.

  FIG. 8 shows functional blocks of an authentication system that is proposed in Patent Document 1 and performs authentication using handwriting information (behavioral characteristics) and fingerprint information (physical characteristics). The authentication system includes a storage unit 191, a character input unit 192 provided with a fingerprint reading unit 193, a locus reading unit 194, and an authentication unit 195. The storage unit 191 stores a correspondence relationship between fingerprint information, handwriting information, and stroke order information of a user who is authenticated. The trajectory reading means 194 reads the movement trajectory of the character input means 192 for each stroke.

  The authentication unit 195 causes the trajectory reading unit 194 to read the trajectory for each stroke on the condition that the fingerprint information read by the fingerprint reading unit 193 matches the fingerprint information stored in the storage unit 191. The trajectory and the trajectory indicated by the handwriting information are collated, the trajectory formation order and the stroke order information are collated, the trajectory and the trajectory indicated by the handwriting information are collated, and the formation order of each trajectory and the stroke order information are collated. If successful, it is determined that the user is the principal.

  FIG. 9 shows the appearance of a portable device in which an authentication system that is authenticated by fingerprint information (physical characteristics) of a non-operation finger proposed in Patent Document 2 is incorporated. A plurality of operation keys 220 are provided on the key arrangement surface 230 of the portable device 210. Furthermore, on a surface different from the key arrangement surface 230 of the mobile device 210, any one of the detection unit 212a, the detection unit 212b, and the detection unit 214 that does not operate the operation key 220 while holding the mobile device 210 or Each of the two or more non-operation fingers is provided so as to be touchable. The mobile device 210 further includes a pattern acquisition unit that acquires a fingerprint pattern (acquisition pattern) of a touched non-operation finger, a plurality of verification patterns for verifying the acquisition pattern, and a plurality of verification patterns executed by the mobile device 210 A table storage unit that stores an allocation table for associating functions, a function execution unit that determines whether the acquired pattern and the matching pattern match or does not match, and causes the portable device 210 to execute the function associated with the matched matching pattern; Is provided.

  FIG. 10 shows an appearance of a mobile phone that is proposed in Patent Document 3 and that is authenticated by a fingerprint (physical feature) and finger movement (behavioral feature). An array of sensors 335 arranged on the surface of the mobile phone 331 can detect both finger detection and finger movement detection. As a result, a pointing device and personal authentication are provided to achieve high security with improved functionality.

  FIG. 11 shows a functional block of a portable information terminal that is proposed in Patent Document 4 and performs authentication based on fingerprints (physical features) and pressure sensor on / off (behavioral features) as biometric information. A pressure sensor on / off determination unit 406 monitors the applied pressure by pressure sensors 405-1 to 405-N with sensor numbers 1 to N provided on the portable information terminal 401. The sensor numbers of the pressure sensors 405-1 to 405-N that have been detected at the time of personal authentication are stored in the pressure sensor on / off storage unit 407. Whether the portable information terminal 401 has reached a hand other than the user by comparing the sensor number stored in the pressure sensor on / off storage unit 407 with the sensor number detected by the pressure sensor on / off determination unit 406 by the comparison unit 408. Is determined. If it is detected that a hand other than the user has been reached, the personal authentication is invalidated.

  A method of performing personal authentication from the pressure distribution of a grip gesture (behavioral feature) using a pressure sensor, which is proposed in Non-Patent Document 1, will be briefly described. When trying to operate a portable terminal, many users take out and hold the terminal. Grasping gesture is the action of grasping the terminal at that time, it can be done naturally in a series of actions to use the terminal, and does not require complicated operations such as changing the way of holding or operating with the other hand . In addition, since the user's hand of the grip gesture is not changed from the terminal but only the change in the force of the finger, it is difficult for others to understand the gesture operation, and even if the gesture video is seen, to reproduce the operation, High safety.

  Non-Patent Document 2 proposes a method of authenticating with a rhythm pattern (behavioral feature) as a key by pressing a pressure sensor rhythmically with a finger.

  Non-Patent Document 3 proposes a personal authentication system using a gripping action (behavioral feature). In this system, authentication is performed using a pressure distribution obtained from a gripping operation for gripping an input device in which 16 pressure sensors are embedded, and a change with time.

JP 2009-211587 A JP 2009-187365 A Japanese Patent Laid-Open No. 2003-298689 JP 2001-142849 A

Tobiyo, Murao, Terada, Kaoru, Tsukamoto, Horikoshi, “Personal Authentication Characteristic Evaluation of Mobile Devices Using Gripping Gestures Using Pressure Sensors”, Information Processing Society of Japan Research Report, 2012 Manabe, Fukumoto, “Proposal of New Input Systems (1) Instable Input Based Authentication: AwareLESS Authentication, NTT DoCoMo Tech J, 2008, March, 2008. 9, no. 4, Page 37-42 Sato, Sato, Ogasawara, Nunagawa, “Implementation of personal authentication system using gripping motion”, Information Processing Society of Japan Research Report, December 8, 2006, Vol. 2006. No. 129 (CSEC-35) Page 7-12

  In biometric authentication, biometric information representing behavioral characteristics or physical characteristics is used as a key, so there is a low risk of forgetting, leaking, and copying due to passwords. Uses biometric authentication by fingerprint. However, in recent years, biometric information can be obtained illegally by social engineering that obtains personal secret information by taking advantage of human psychological gaps and behavioral errors, and it is difficult to say that it is safe.

  The methods described below are known for illegally obtaining biometric information by social engineering. In the case of a fingerprint (physical feature), a fingerprint image is acquired by taking a residual fingerprint on the reading device or photographing from a place several meters away. Similarly, behavioral characteristics are also acquired by shooting or snooping. The safety of the biometric authentication described above will be described below from the viewpoint of social engineering.

  In Patent Document 1, handwriting information that is behavioral characteristics and fingerprint information that is physical characteristics are adopted as keys. The handwriting information can be acquired by photographing the movement of the character input means 192 or the handwriting of the registrant itself, and the acquisition of the fingerprint is as described above. The handwriting can be acquired by finger or hand movement. Therefore, the risk of leakage of biometric information for social engineering is not low.

  In Patent Document 2, a fingerprint pattern obtained from a fingerprint of a touched finger by touching the detection unit (212a, 212b, and 214) with one or more non-operation fingers is employed as a key. . The acquisition of the fingerprint is as described above. Furthermore, each non-operating finger is not identified, and the fingerprint pattern can be easily duplicated or imitated. Therefore, it is determined that the risk of biometric information leakage to social engineering is higher than that of Patent Document 1.

  In Patent Document 3, authentication is performed by a fingerprint and finger movement. The risk of leakage of biometric information is also determined to be similar to that of Patent Document 1.

  Also in Patent Document 4, since authentication is performed by the movement of a fingerprint and a finger as in Patent Document 3, it is determined that the risk of leakage of biometric information is similar. However, it is necessary to press individually identified pressure sensors with a finger. For this reason, since the position where the portable information terminal is held and the finger and place to be pressed are limited, a more tight authentication operation is forced.

  In Non-Patent Document 1, authentication is performed based only on a change in the force of a finger to be held. That is, since there is no movement of the finger in the horizontal direction and the vertical direction, there is little fear of leakage by a technique called photographing or shoulder hacking. However, since authentication is based only on behavioral characteristics and changes in finger strength, not based on physical characteristics, unauthorized authentication by trial and error by others is possible.

  Since Non-Patent Document 2 is not based on physical features as in Non-Patent Document 1, and authenticates only with a rhythm pattern in which the pressure sensor is pressed with a finger, there is little fear of leakage due to shooting or shoulder hacking. It is difficult to imitate the pressing rhythm, and it is judged that the possibility of fraud authentication by trial and error is lower than that of Non-Patent Document 1, compared with only the change of finger force. However, it is not always easy for a legitimate person to be pressed with the registered rhythm pattern every time, and it is frequently determined that the legitimate person is not a legitimate person to be authenticated.

  Since Non-Patent Document 3 does not rely on physical features as in Non-Patent Document 1 and Non-Patent Document 2, authentication is performed only by the pressure distribution holding the input device in which the pressure sensor is embedded and its change over time. There is little worry about leakage due to or shoulder hacking. In addition, the pressure distribution and its temporal change are difficult to imitate like the rhythm pattern in Non-Patent Document 2, but it is also possible for a legitimate person to reproduce the temporal change of the registered pressure distribution. It is not always easy, and the frequency with which it is determined that the person is not an authorized person is high.

  As described above, the physical feature of a fingerprint can be duplicated by another person using a residual fingerprint or a fingerprint image obtained by photographing, and a behavioral feature of touching or pressing a specific place (pressure sensor) with a finger can also be photographed. It can be imitated, that is, leaked by others by snooping. Note that if the finger pressing force is changed in a predetermined pattern or method while gripping, the possibility of leakage due to shooting or snooping can be greatly reduced, but the person to be authenticated himself presses each time reliably. There is a risk of incorrect authentication without being able to reproduce the location and the pattern to be pressed. For example, authentication cannot be performed if the touching hand is changed or the gripping position or orientation is changed.

In order to solve the above problems, an authentication apparatus according to the present invention is an authentication apparatus that performs personal authentication based on biometric information composed of physical characteristics and behavioral characteristics of a person to be authenticated,
Registered biometric information storage means for storing first biometric information of one or more authenticated persons registered for authentication;
A physical feature detecting means for detecting the physical feature;
Behavioral feature detection means for detecting the behavioral feature;
Second biological information generating means for generating second biological information by combining the detected physical characteristics and the behavioral characteristics;
Biometric information collating means for collating the first biometric information with the second biometric information;
Authenticating means for performing personal authentication based on the collation result.

  The present invention can realize authentication with a low degree of risk with respect to social engineering and with a high degree of freedom of authentication operation by the person to be authenticated.

It is a figure which shows the state which hold | gripped the portable terminal with which the authentication apparatus which concerns on embodiment of this invention was integrated with one hand. It is the figure which looked at the portable terminal of FIG. 1 from the side surface in which the holding | grip biological information sensor was provided. It is a perspective view which shows the holding | grip biological information sensor element which is a structural unit of the holding | grip biological information sensor of FIG. It is explanatory drawing which shows typically the positional relationship of the authentication finger | toe on the holding | grip biometric information sensor which consists of a holding | grip biometric information sensor element of FIG. It is a block diagram which shows the structure of the fingerprint sensor of FIG. It is a schematic diagram which shows the structure of the pressure sensor of FIG. It is a block diagram which shows the structure of the authentication apparatus concerning this Embodiment. It is a functional block diagram of the authentication system currently disclosed by patent document 1. FIG. It is a figure which shows the external appearance of the portable apparatus with which the authentication system currently disclosed by patent document 2 was integrated. It is a figure which shows the external appearance of the mobile telephone provided with the authentication function currently disclosed by patent document 3. FIG. FIG. 11 is a functional block diagram of a portable information terminal having an authentication function disclosed in Patent Document 4.

  First, a technical idea in authentication according to the present invention will be briefly described. In the present invention, both physical characteristics and behavioral characteristics, which are biometric information of the person to be authenticated, are detected at the same time, and authentication is performed based on whether the physical characteristics and behavioral characteristics registered in advance by the registrant match. Is to do. The physical feature is a fingerprint, and the behavioral feature is a gripping action. More specifically, as described above, a gripping operation with a low risk to social engineering is detected based on pressure by pressing, and at the same time, which of the registrants who registered the finger that performed the gripping operation based on the detected fingerprint is registered. By determining whether or not the finger is a finger and determining whether or not the pattern of the gripping operation is performed by a predetermined finger, safer authentication for social engineering is realized.

  As shown in FIG. 1, the authentication apparatus according to the embodiment of the present invention is preferably used by being incorporated in a portable device Ap that can be grasped with one hand such as a cellular phone. It can also be used for authentication when entering a PC (Personal Computer) or a room with security. Here, it demonstrates as a thing integrated in the portable apparatus Ap.

  The person to be authenticated holds the portable device Ap such that the portable device Ap is sandwiched between the index finger F1, the middle finger F2, the ring finger F3, and the little finger F4 and the thumb Ft. In the present invention, in the grasping operation of the index finger F1, the middle finger F2, the ring finger F3, and the little finger F4 of the person to be authenticated, the grasping action of the person to be authenticated is determined from the fingerprint (physical feature) and the movement of the finger (behavioral feature). The biometric information (hereinafter, “gripped biometric information Ig”) is detected and personal authentication is performed. The index finger F1, the middle finger F2, the ring finger F3, and the little finger F4 are collectively referred to as an authentication finger Fr.

  As illustrated in FIG. 2, the grasping biological information sensor Sg for detecting the grasping biological information Ig is provided in the portable device Ap so that the person to be authenticated can easily come into contact with the fingerprint portion of the authentication finger Fr. In this example, since the portable device Ap is gripped with the right hand, the grasped biological information sensor Sg is provided over the contact area of the authentication finger Fr on the left side surface portion Gs when the portable device Ap is viewed from the front.

  When the portable device Ap is gripped with the left hand, the grasping biological information sensor Sg is configured in the same manner as the case where it is provided on the left side surface portion except that it is provided on the right side surface portion of the mobile device Ap. Moreover, you may provide in both the left and right side parts of portable apparatus Ap so that it can authenticate with either the left or right hand. Furthermore, authentication is possible even if the left hand thumb Ft and the right hand thumb Ft are brought into contact with the gripping biological information sensor Sg for the right hand and the left hand, respectively, but this will be described in detail later.

  FIG. 3 shows an example of the grasping biological information sensor element Esg, which is a constituent unit of the grasping biological information sensor Sg. In the present embodiment, the grasping biological information sensor Sg is formed of a necessary number of grasping biological information sensor elements Esg according to the contact range of the authentication finger Fr. The grasping biological information sensor element Esg includes one long fingerprint sensor Sf for detecting the fingerprint of the authentication finger Fr and eight rectangular pressure sensors Sp for detecting the pressure by the authentication finger Fr. They are arranged on a silicon substrate Si. The eight pressure sensors Sp are arranged on both long side surfaces of the fingerprint sensor Sf so as to face each other so that four sets of pressure sensors Sp form a pair.

  When the long side length and the short side length of the fingerprint sensor Sf are Lsg and Lsf, and the long side length of the pressure sensor Sp is Lsp, for example, Lsg = 5.5 mm, Lsf = 3 mm, and Lsp = 1 mm. Conceivable. The number of pressure sensors Sp in the grasping biological information sensor element Esg is not limited to eight, and an arbitrary number (n) can be provided as necessary, and the size of the grasping biological information sensor element Esg is accordingly adjusted. It is also determined appropriately.

  FIG. 4 shows a preferred positional relationship between the gripping biological information sensor Sg and the authentication finger Fr when detecting the gripping biological information Ig. In order to detect the grasped biological information Ig with high accuracy, it is desirable that the fingerprint portion of the authentication finger Fr is substantially orthogonal to the fingerprint sensor Sf and fully abuts against two adjacent pairs of pressure sensors Sp. The lengths Lsg, Lsf, and Lsp described above are determined so that there are as many feature points as possible of the fingerprint of the authentication finger Fr and the fingerprint sensor Sf can be contacted.

  In FIG. 4, when the authentication finger Fr is displaced to either the left or right, the authentication finger Fr is in full contact with the pair of pressure sensors Sp, and the two pairs of left and right pressure sensors adjacent to the pressure sensor Sp. Partially abuts on Sp. As a result, the pressure corresponding to the degree of contact is detected by each of the three pairs of pressure sensors Sp. On the other hand, since the fingerprint sensor Sf extends to the left and right across the plurality of pressure sensors Sp, even if the authentication finger Fr is shifted to the left or right, the fingerprint detection is not affected. When the authentication finger Fr is slightly displaced in the vertical direction, one pressing force of the pair of upper and lower pressure sensors Sp is increased and the other is decreased, but for the pressing detection by the pair of pressure sensors Sp. No effect.

  In this manner, a signal corresponding to the pressing force of the authentication finger Fr pressing the grasping biological information sensor Sg is output from the one or more pairs of pressure sensors Sp, and at the same time, the fingerprint sensor Sf responds to the detected fingerprint. Signal is output. Based on the output signal from each pressure sensor Sp, it can be specified which pressure sensor Sp is pressed. That is, it is possible to specify which position of the grasping biological information sensor Sg has been performed. At the same time, the pressed authentication finger Fr can be identified based on the output signal from the fingerprint sensor Sf. That is, it is possible to specify which finger of the authentication finger Fr presses which part of the grasped biological information sensor Sg.

  FIG. 5 simply shows the configuration of the fingerprint sensor Sf. The fingerprint sensor Sf includes n electrodes En, a switch Sn for each electrode, a capacitance detection circuit Cd, and a drive circuit Cd. When the fingerprint portion of the authentication finger Fr contacts the electrode, the capacitance is detected, and a signal corresponding to the fingerprint is generated and output. Here, the case where there are two electrodes and switches is shown.

  FIG. 6 simply shows the configuration of the pressure sensor Sp. The pressure sensor Sp includes a diaphragm Df, a metal thin film Fm1, a metal thin film Fm2, and a control circuit Cc. A control circuit Cc, a metal thin film Fm2, a metal thin film Fm1, and a diaphragm Df are laminated on a silicon substrate Si. The pressing by the authentication finger Fr is transmitted to the metal thin film Fm1 and the metal thin film Fm2 through the diaphragm Df, and a signal corresponding to the pressing is generated and output.

  With reference to the functional block diagram shown in FIG. 7, the configuration and operation of the authentication apparatus according to the present embodiment will be described. As described above, the authentication device Ar includes the grasping biological information sensor Sg provided on the side surface of the mobile device Ap so that the authentication finger Fr can be pressed, the pressing force detector 10 provided inside the mobile device Ap, and the pressing point determiner 12. , Press pattern generator 14, fingerprint detector 20, fingerprint collator 22, registered fingerprint store 24, registered press pattern store 26, press pattern collator 30, authenticator 32, and clock 34, and the entire authentication device Ar And a controller 40 for controlling the operation of

  As described above, the grasping biological information sensor Sg has an arbitrary number n of pressure sensors Sp, which are displayed as pressure sensors Sp1 to Spn. The clock 34 measures the elapsed time T after the start of the authentication process by the authentication device Ar and outputs it to the authenticator 32.

  When the authentication operation of the authentication device Ar is started, the grasping biological information sensor Sg outputs a pressing signal Ssp corresponding to the pressing force of the authentication finger Fr. Note that the pressing signal Ssp is a general term for the individual pressing signals Ssp1 to Sspn output according to the pressing force from each of an arbitrary number n of pressure sensors Sp1 to Spn.

  The pressing force detector 10 detects the pressing force P detected by each of the pressure sensors Sp1 to Spn based on the pressing signals Ssp1 to Sspn, and outputs the pressing force P (Sp1) to P (Spn). To do.

  The pressing point determiner 12 is based on the pressing forces P (Sp1) to P (Spn), the location of the gripping biological information sensor Sg being pressed by the authentication finger Fr, that is, the pressing force P is equal to or greater than a predetermined threshold Pth. With the positions of the pressure sensors Sp1 to Spn on the grasping biological information sensor Sg, a pressing point Pp that is a position pressed by the authentication finger Fr is determined and output.

  That is, the pressing point Pp is data indicating which part (pressure sensor Sp) or position of the grasping biological information sensor Sg is pressed by the person to be authenticated. The pressure sensor Sp, the pressing force detector 10 and the pressing point determiner 12 constitute a behavioral feature detecting means for detecting the behavioral feature (pressing operation) of the person to be authenticated. That is, the behavioral feature is related by the pressing point Pp. The pressing point Pp is also output to a fingerprint detector 20 described later.

  The fingerprint sensor Sf outputs a capacitance signal Ssf corresponding to the fingerprint of the authentication finger Fr being pressed. The electrostatic capacitance signal Ssf consists of outputs from all electrodes on the fingerprint sensor Sf. The fingerprint detector 20 detects the fingerprint at the pressed position based on the capacitance signal Ssf and the pressing point Pp sent from the pressing point determiner 12, and outputs detected fingerprint data Fpd. The fingerprint sensor Sf and the fingerprint detector 20 constitute physical feature detection means for detecting the physical feature (fingerprint) of the person to be authenticated. Here, the physical features are related by the detected fingerprint data Fpd. Since there may be a plurality of pressing points Pp, there may be a plurality of detected fingerprint data Fpd output from the fingerprint detector 20.

  The fingerprint collator 22 stores all the fingerprint data of registered registrants (hereinafter referred to as “registered fingerprint data Fpr” stored in the registered fingerprint storage 24 in advance in the detected fingerprint data Fpd output from the fingerprint detector 20. )). There may be a plurality of registrants. The detected fingerprint data Fpd is a part of the fingerprint, and the registered fingerprint data Fpr is a substantially complete fingerprint on the surface of each finger. Therefore, collation is performed by partial matching of fingerprints.

  If there is a registered fingerprint data Fpr that matches the detected fingerprint data Fpd, the fingerprint collator 22 generates matched registered finger data Fpm representing which finger of which registrant the matched registered fingerprint data Fpr is. Output to both the pressing pattern creator 14 and the registered pressing pattern storage 26. On the other hand, if there is no match with the registered fingerprint data Fpr, the fingerprint collator 22 outputs a signal indicating non-match (hereinafter, “registered fingerprint non-match signal Fp 0”) to the authenticator 32.

  Based on the pressing point Pp output from the pressing point determiner 12 and the matching registered finger data Fpm output from the fingerprint collator 22, the pressing pattern creator 14 determines which position of the grasping biological information sensor Sg is the index finger F1. Then, a detection pressing pattern Ppd indicating which of the middle finger F2, the ring finger F3, and the little finger F4 is pressed is created and output to the pressing pattern collator 30. That is, the detection pressing pattern Ppd is composed of the pressed authentication finger Fr and the pressed position.

  The detected pressing pattern Ppd is updated every time the fingerprint sensor Sf is repeatedly pressed by the authentication finger Fr, and indicates which position (portion) of the fingerprint sensor Sf is sequentially pressed by which authentication finger Fr. It becomes data. The detected pressing pattern Ppd is second biological information generated by combining the detected physical characteristics and behavioral characteristics, and the pressing pattern creator 14 constitutes second biological information generating means. Note that the second biological information generation means is means for generating second generation information.

  The registered press pattern storage unit 26 constitutes registered biometric information storage means for storing first biometric information that is biometric information (physical characteristics and behavioral characteristics) of one or more registrants registered for authentication. . The registered press pattern storage unit 26 matches the matched registration finger data Fpm output from the fingerprint collator 22 with a press pattern (hereinafter, “registered press pattern Ppr”) associated with a registrant registered in advance.

  The registered press pattern Ppr is a pattern that indicates which position of the fingerprint sensor Sf the registrant presses in sequence with which authentication finger Fr, similar to the above-described detection press pattern Ppd. This is data registered in advance in the authentication device Ar (registered press pattern storage 26) as a key. That is, the registered press pattern Ppr is the first biological information. When there are a plurality of registrants, the registrant's identification information may be added to the registration press pattern Ppr. The registered press pattern storage 26 outputs the registered press pattern Ppr associated with the registrant who matches the matched registration finger data Fpm to the press pattern collator 30.

  The press pattern collator 30 collates the detected press pattern Ppd with the registered press pattern Ppr output from the registered press pattern storage 26, generates a match determination signal Mp if it matches, and outputs it to the authenticator 32. .

  The press pattern collator 30 has a built-in counter that counts the number of times the detected press pattern Ppd has been received for each verification, and the patterns in the order corresponding to the number counted up among the registered press patterns Ppr (the pressed finger And the place where it was pressed. The match determination signal Mp is generated when all of the detected press patterns Ppd sent from the press pattern generator 14 match the registered press pattern Ppr.

  Note that the point in time when the authentication action of the person to be authenticated ends may be determined by another action (such as pressing a switch or performing a predetermined grip gesture) or by the elapsed time of the clock 34. May be.

  Moreover, the press pattern collator 30 memorize | stores the information of the registrant of the registration press pattern Ppr output from the registration press pattern storage 26, and whenever the registration press pattern Ppr is sent (every time there exists a press). The registrant information may be compared with each other, and the authentication condition may be a grip gesture of the same person.

  The collation of the detected pressure pattern Ppd and the registered pressure pattern Ppr is repeated every time there is a pressure on the grasped biological information sensor Sg by the authentication finger Fr. The press pattern collator 30 constitutes biometric information collating means for collating the first biological information Ppr including the detected physical feature (fingerprint) with the second biological information Ppd.

  That is, the pressed pattern collator 30 updates the detected pressed pattern Ppd every time the person to be authenticated repeats pressing. And the press pattern collator 30 collates with the registration press pattern Ppr whenever the detection press pattern Ppd is updated. When the detected press pattern Ppd generated for each press matches the registered press pattern Ppr read for each press, a match determination signal Mp is output to the authenticator 32. When the match determination signal Mp is input, the authenticator 32 authenticates that the person to be authenticated is an authorized registrant and outputs an authentication signal R. The authenticator 32 constitutes an authentication unit.

  In the present invention, the finger pressed by the fingerprint is specified, and the pressed pattern is identified in accordance with the position, arrangement and order of the pressed points, and is authenticated by comparing with a pre-registered equivalent pressed pattern. ing. Depending on the number of times, the number of pressing patterns increases exponentially, and the degree of safety increases accordingly.

  As described above, the grasping biological information sensor Sg extends in the width direction of the authentication finger fr, and the pressed authentication finger Fr is identified based on the fingerprint. As a result, it is not necessary for the authentication finger Fr to press a predetermined place on the fingerprint sensor Sf without fail. If the authentication finger Fr is pressed on the fingerprint sensor Sf, the pressing position and the pressing finger are accurately detected by the fingerprint to obtain a pressing pattern. be able to. In this way, the person to be authenticated does not need to accurately hold with a predetermined finger in a predetermined posture with respect to a predetermined place, and can be authenticated with a comfortable posture. For example, an authentication finger Fr that is gripped by either the right hand or the left hand has an advantage that it can be authenticated by a fingerprint.

  Further, in the present specification, an embodiment is described in which a mobile terminal is gripped and authenticated by the right hand, but needless to say, it can be configured to be gripped and authenticated by the left hand. Furthermore, a grasping biometric information sensor may be provided on both side surfaces of the mobile terminal to perform authentication with both hands. In this case, the number of pressing patterns further increases as compared with the case of one-hand authentication.

  Further, the present invention can be applied to an apparatus that authenticates by pressing with a fingerprint or a means having a pattern corresponding to the fingerprint. Such a device can be installed on a wall or a building that cannot be carried.

  INDUSTRIAL APPLICABILITY The present invention can be used for an authentication device including a sensor that can identify a pressure and a fingerprint.

Ap Mobile device Ar Authentication device Sg Grasping biological information sensor Esg Grasping biological information sensor element Sf Fingerprint sensor Sp (Sp1-Spn) Pressure sensor Si Silicon substrate 10 Pressing pressure detector 12 Pressing point determiner 14 Pressing pattern generator 20 Fingerprint detector 22 Fingerprint verification unit 24 Registered fingerprint storage unit 26 Registered press pattern storage unit 30 Press pattern verification unit 32 Authentication unit 34 Clock 40 Controller Lsg Long side length Lsf of fingerprint sensor Sf Short side length Lsp of fingerprint sensor Sf Length of pressure sensor Sp Side length Ssf Capacitance signal Fpd Detection fingerprint data Fpr Registration fingerprint data Fpm Match registration finger data Ssp Press signal P (Sp) Press force Pp Press point Ppd Detection press pattern Ppr Registration press pattern Mp Match determination signal T Time information R Authentication signal Ft Thumb Fr Authentication finger F1 Index finger F2 Middle finger F3 Ring finger 4 little finger Ig grip biometric information

Claims (4)

An authentication device for performing personal authentication based on biometric information composed of physical characteristics and behavioral characteristics of a person to be authenticated,
Registered biometric information storage means for storing first biometric information of one or more authenticated persons registered for authentication;
A physical feature detecting means for detecting the physical feature;
Behavioral feature detection means for detecting the behavioral feature;
Second biological information generating means for generating second biological information by combining the detected physical characteristics and the behavioral characteristics;
Biometric information collating means for collating the first biometric information with the second biometric information;
An authentication device comprising authentication means for performing personal authentication based on the collation result. The behavioral feature is a pressing action of the person to be authenticated,
The physical feature is fingerprint information of the person to be authenticated,
The authentication apparatus according to claim 1, wherein the second biological information is information in which a fingerprint and a press are associated with each other. The behavioral feature detection means includes a pressure sensor that detects pressure by receiving pressure from the person to be authenticated,
The physical feature detection means includes a fingerprint sensor that detects a fingerprint of a finger pressed by the person to be authenticated,
The authentication apparatus according to claim 2, wherein the second biological information includes information indicating a position where a plurality of pressure sensors are pressed and a pressed finger.   The authentication apparatus according to claim 3, wherein the second biological information further includes information indicating an order of pressing by the finger.