JP2017038766A - Personal authentication device and personal authentication method by biological information - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily perform biometric authentication, and easily perform personal authentication work by a portable terminal, etc. without having to carry a dedicated portable-type device.SOLUTION: A personal authentication device consisting of a device with an earphone which is capable of performing biometric authentication by electrocardiographic information includes an external ear electrode and an external electrode. The external ear electrode is provided on an earphone side, and is caused to come in contact with the external ear, and then the external electrode is touched with a hand so that electrocardiographic information is acquired. The acquired electrocardiographic information is stored, and the electrocardiographic information is transmitted to the portable terminal side as needed, thereby performing the biometric authentication.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a personal authentication device and an authentication method for realizing reliable personal authentication under a mobile environment when using a network service by a mobile terminal such as a smartphone or a tablet terminal.

  2. Description of the Related Art Conventionally, several techniques have been studied as a personal authentication technique in a mobile environment such as when using a network service in a mobile terminal such as a smartphone or a tablet terminal.

  The most common method is to enter the password from the screen of a smartphone or the like, but there is a risk of the password being stolen by peeping etc., and at the same time, it is difficult to operate a secure password that is difficult to guess In addition, there is a problem that input of a password becomes complicated when authentication is continuously required during use of a network service by a smartphone or the like in order to prevent the use of the pre-authentication in a state after authentication.

  In addition, there is a two-factor authentication method using a portable device such as a one-time password token or an IC card, but there is a complexity that it is necessary to carry another device only for authentication work.

  In recent years, in order to solve these problems, a method of providing a dedicated biometric sensor such as a fingerprint sensor on a smartphone or tablet terminal, a method of trying to authenticate based on input information from a built-in camera or microphone, etc. Has also been proposed.

  However, a dedicated biometric sensor is not provided in all portable terminals, and when an external reading sensor is provided, it is necessary to carry a dedicated device other than the portable terminal, which is complicated. Furthermore, with authentication using fingerprints, there is a problem that authentication cannot be performed if the person injured his / her finger, or that the authentication accuracy is reduced, and that authentication is performed by copying the fingerprint and impersonating the person himself / herself. . Further, when attempting to authenticate based on input information from a camera or a microphone built in the portable terminal, an input operation is required for each authentication while at the same time leaving a problem in high authentication accuracy.

  On the other hand, in recent years, an authentication method using an electrocardiographic waveform has been proposed as one of a biometric authentication method and a health care method for managing the health state of the living body.

  In Patent Document 1, a multi-function small wireless biosensor capable of measuring an electrocardiogram waveform with high sensitivity is proposed, and the sensor can be used in a network environment. In addition, a method for bringing it into close contact with the skin has been proposed, and it can be said that it is complicated in daily operation.

  Further, in Patent Document 2, in a wireless communication system that can mutually authenticate between a wireless sensor that moves between a plurality of access points and each access point, a fluctuation element is extracted from measurement data measured by the wireless sensor. The wireless sensor and the access point are provided with a storage medium in which a predetermined number of storage areas capable of storing the encryption key generation data and storing the history of the encryption key generation data are provided, generate a common key from the encryption key generation data, and perform an authentication process. The technique of doing is described.

  Patent Document 3 describes a smart card for authenticating a card holder. Among them, there is a description of a biosensor provided in the smart card, and an electrocardiogram sensor is included as an example of this biosensor. .

  Further, Patent Document 4 also proposes a biometric authentication IC card and proposes to use electrocardiographic information as an authentication method.

International Publication No. 2010/023962 International Publication No. 2009/157048 Special table 2007-510833 gazette JP 2012-150696 A

  The present invention is an apparatus that can always be worn and collected biological information without a sense of incongruity, and is intended to perform an authentication operation with a small operation load that does not require repeated special authentication operations.

The present invention has been made to solve these problems.
That is, the invention described in claim 1 is a personal authentication device that includes a device having an earphone and performs biometric authentication using electrocardiographic information, and an outer ear electrode and an external electrode for acquiring the electrocardiographic information A personal authentication device, wherein the outer ear electrode is provided on at least one of the left and right sides of the earphone, and is provided in a portion that comes into contact with the outer ear when the earphone is attached to an ear. is there.

  Next, according to a second aspect of the present invention, there is provided an individual according to the first aspect, wherein the individual has an external electrode in a portion that is connected to the earphone having the outer ear electrode and is not in contact with the worn ear. It is an authentication device.

  The invention described in claim 3 is the personal authentication apparatus according to claim 1, wherein a triaxial acceleration sensor is built in the personal authentication apparatus.

  The invention described in claim 4 is the personal authentication apparatus according to any one of claims 1 to 3, wherein a temperature sensor is built in the personal authentication apparatus.

  According to a fifth aspect of the present invention, in the personal authentication device according to any one of the first to fourth aspects, the outer ear electrode provided on the earphone is brought into contact with the outer ear, and a hand is brought into contact with the outer electrode. Obtaining the electrocardiogram information; storing the obtained electrocardiogram information; sending the stored electrocardiogram information to the portable terminal; and performing biometric authentication from the obtained electrocardiogram information. It is a personal authentication method characterized by having.

  According to the present invention, unlike conventional methods using password authentication or a portable device for authentication, it is difficult to guess or steal authentication information, and at the same time carry a dedicated portable authentication device for authentication only. Therefore, it is possible to provide a simple personal authentication method that does not need to be repeated and does not require repeated special authentication operations.

It is a figure showing roughly the form of the earphone concerning one mode of the present invention. It is a figure which shows schematically the form of another earphone concerning 1 aspect of this invention. It is a conceptual diagram which shows the operation example concerning 1 aspect of this invention. It is a flowchart which shows the operation example concerning 1 aspect of this invention. It is a block diagram which shows an example of the personal authentication apparatus function of this invention. It is a flowchart which shows one example of biometrics authentication state cancellation | release of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each figure, the same reference numerals are assigned to calibration elements that exhibit the same or similar functions, and duplicate descriptions are omitted.

  FIG. 1 is a diagram schematically showing a form of an earphone according to an aspect of the present invention. Here, an example in the case of using a wireless earphone is shown, and the outer ear electrode 101 is provided in a portion that touches the outer ear when the earphone 100 is worn on the ear, and the control is integrally connected to the earphone. The external electrode 102 is provided in a portion of the portion 103 that does not touch the ear. For exchanging information with the portable terminal, a wireless communication function such as Bluetooth (registered trademark) can be used by using an antenna provided in the control unit, but it is not always necessary to be a wireless earphone. It may be a method of communicating with.

  FIG. 2 is a diagram schematically showing another earphone according to an aspect of the present invention. The outer ear electrode is provided in a portion that comes into contact with the outer ear when the earphone is worn, and a conductive earphone pad 104 made of an elastic body or the like can be provided in order to stabilize the contact with the outer ear. By providing the conductive earphone pad 104, the adhesion between the outer ear and the outer ear electrode 101 is increased, and even when the body is moving, the generation of noise due to contact fluctuation or the like is suppressed, and more stable electrocardiographic information can be acquired. It becomes possible.

  Conductive earphone pads can be made of rubber or plastic material with conductive powder, such as carbon black, graphite, carbon nanofiber, gold, silver, or other metals. However, the present invention is not limited to these.

  Further, the external electrode 102 does not necessarily have to be in the vicinity of the main body of the earphone 100, and may be provided in the control unit 103 connected to the main body of the earphone as shown in FIG.

  Here, FIG. 3 shows an operation example according to an embodiment of the present invention. When the earphone 100 is worn on the ear, the outer ear electrode 102 is brought into contact with the outer ear, and then the outer electrode 103 is touched by hand. When the mobile terminal needs to verify the identity of the user, the acquired ECG information is sent to the mobile terminal using a wireless or wired method such as Bluetooth (registered trademark), and biometric authentication is performed. To perform identity verification, that is, personal authentication.

  At this time, the accuracy of the electrocardiographic information may slightly vary depending on the personal constitution, the contact state between the skin and each electrode, and / or the influence of disturbance noise. Therefore, in order to improve the accuracy, for example, when the earphone 100 having the outer ear electrode 101 is attached only to the right ear, it is desirable that the left hand touches the outer electrode 102. This is because the amplitude of the electrocardiogram signal is generally larger when the electrocardiogram information is obtained from the left and right sides than when the electrocardiogram information is obtained from the left and right sides.

More preferably, the outer ear electrode 101 is provided on both the left and right earphones, and the outer ear electrode 101 is electrically connected to the left and right outer ears, and the outer electrode 102 is touched with either the left or right hand. desirable.

  FIG. 4 is a flowchart illustrating an operation example according to one embodiment of the present invention. Here, when the earphone 100 is worn, stable electrocardiogram information is acquired by touching the external electrode 102 with a hand opposite to the left and right of the ear with which the external ear electrode 101 is in contact, and the acquired electrocardiogram information is stored. In addition, when biometric authentication is required on the mobile terminal side, the application software receives electrocardiogram information from the personal authentication device side of the present invention. A biometric authentication calculation process is performed based on the received electrocardiogram information, and a failure message is output only when biometric authentication fails. When the biometric authentication is completed, the next processing by the application software is performed.

  According to the conventional authentication procedure, when there is a biometric authentication execution request from the application software, a message prompting the user to perform biometric authentication is output on the screen or the like, and in response to this, the user performs biometric authentication operation each time. This is a complicated procedure because it is necessary.

  In this way, in conjunction with the application software provided on the form terminal side, biometric authentication work can be performed from the electrocardiogram information obtained by the personal authentication device, and identity verification can be performed. The next processing / service can be easily performed.

  Here, FIG. 5 is a block diagram showing an example of the function of the personal authentication device of the present invention, and the function will be described in more detail.

  First, electrical signals acquired from the outer ear electrode 101 and the outer electrode 102 are amplified by an amplifier circuit, and noise is reduced via a filter circuit. Thereafter, it is organized as electrocardiographic information in the measurement processing section via the A / D converter, and stored in the flash memory or the like from the storage processing section.

  When there is a biometric authentication execution request by application software from a portable terminal or the like, data is read from the flash memory via the storage processing unit, and transmitted to the portable terminal side via the encryption processing unit. . However, the encryption processing unit need not be provided.

  Here, in the personal authentication device of the present invention, a three-axis acceleration sensor and / or a temperature sensor are provided, and it is possible to monitor a user's exercise state, body temperature fluctuation state, and the like. This information can be transmitted to and used as data for various healthcare application software such as health management applications.

  Since the temperature sensor is mainly intended for measuring body temperature, it is desirable to provide the temperature sensor on the main body side of the earphone 100 that is always touching the body, and the three-axis acceleration sensor may be provided in the control unit 103. .

  Since the personal authentication device of the present invention has an earphone function, it can receive music information and the like from the mobile terminal side and enjoy music and the like via the music playback unit. Accordingly, it is possible to use the personal authentication device as a personal authentication device capable of performing biometric authentication when necessary, while fully utilizing it in daily life, without being conscious of carrying the personal authentication device.

Further, it is possible to determine whether or not the earphone 100 can be worn by monitoring the potential information on the outer ear electrode 101 side. That is, the electrode state determination unit shown in FIG. 5 determines whether or not the earphone 100 is being worn. When the earphone 100 is removed from the ear, authentication cancellation information is generated from the authentication cancellation information generation unit, and the flowchart of FIG. As shown, authentication cancellation information can be transmitted to the mobile terminal side. As a result, the authentication cancellation information is received by the application software, and the authentication state cancellation processing can be performed.

DESCRIPTION OF SYMBOLS 100 ... Earphone 101 ... Outer ear electrode 102 ... External electrode 103 ... Control part 104 ... Conductive earphone pad 200 ... Portable terminal

Claims (5)

  A personal authentication device comprising a device having an earphone and performing biometric authentication using electrocardiogram information, comprising an outer ear electrode and an external electrode for acquiring the electrocardiogram information, wherein the outer ear electrode is A personal authentication device, which is provided on at least one of the left and right sides of the earphone, and is provided in a portion that comes into contact with the outer ear when the earphone is attached to an ear.   The personal authentication device according to claim 1, further comprising an external electrode in a portion that is connected to the earphone having the outer ear electrode and is not in contact with the worn ear.   The personal authentication device according to claim 1, wherein a three-axis acceleration sensor is built in the personal authentication device.   4. The personal authentication device according to claim 1, wherein a temperature sensor is built in the personal authentication device.   The personal authentication device according to any one of claims 1 to 4, wherein the outer ear electrode provided in the earphone is brought into contact with the outer ear, and electrocardiographic information is obtained by bringing a hand into contact with the external electrode; A personal authentication method comprising: storing the obtained electrocardiogram information; sending the stored electrocardiogram information to a portable terminal; and performing biometric authentication from the obtained electrocardiogram information. .

Images