JP2011044029A - Input device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an input device preventing leakage of authentication code even when an operation of inputting the authentication code is overseen by someone else. <P>SOLUTION: The input device is equipped with: a touch sensor 11 for receiving inputs; a tactile sense presentation unit 12 for vibrating a touch surface 11a of a touch sensor 11; and a control unit 13 for controlling the tactile sense presentation unit 12 to intermittently present a tactile sense to an object touching the touch surface 11a when an input is received by the touch sensor 11, and controlling so as to receive the authentication code based on the frequency of the presented tactile sense when an input determination operation is detected. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an input device, and more particularly to an input device for inputting an authentication code.

  To use ATMs (Automated Teller Machines) and credit cards, etc. of automatic transaction equipment installed in financial institutions and convenience stores, a PIN (authentication) that only the customer (user) who owns the card knows Code). However, recently, when an authentication code is input, the authentication code leaks due to peeping or voyeurism, and unauthorized transactions due to the leaked authentication code tend to increase.

  For this reason, in recent years, security for authentication codes has been emphasized, and various measures have been taken. For example, Patent Document 1 below discloses a personal identification number input device that can prevent leakage of an authentication code even when the fingertip is visually observed by another person when the authentication code is input.

  This personal identification number input device includes a display unit, an input unit including a numeric keypad, and an information processing unit that executes information processing. A series of information processing as shown in FIG. 15 is performed by the information processing unit. ing. The customer does not input the personal identification number (authentication code) as it is, but enters a numerical value obtained by performing a predetermined calculation on the personal identification number in accordance with an instruction issued from the personal identification number input device. For example, as shown in FIG. 15, when the personal identification number is “1234”, first, the information processing unit determines the calculation method and operand for each digit. Then, the information processing unit causes the display unit to display an instruction “Please input a value obtained by adding 2 to the first digit of your personal identification number and press the execution key”. As the first numerical value input operation, the customer adds “2” of the operand determined by the information processing unit to “1” that is the first digit of the password in accordance with the instruction displayed on the display unit. "From the input section and press the Enter key. The customer repeats such an operation for four digits, and the information processing unit performs an inverse calculation from the input numerical value to derive the original personal identification number for authentication.

  Thus, in the password input device described in Patent Document 1, since the number key and the password entered by the customer are different, even when the fingertip is directly visually observed by another person when entering the password, Your PIN will not be leaked.

JP 2008-140009 A

  However, in an input device in which a user directly inputs a personal identification number (authentication code), the code corresponding to the pressed key is accepted as it is. That is, since the pressed key and the code received by the input device correspond to each other, there is a problem that the authentication code leaks when the pressed key is peeped or voyeurized.

  Further, as in Patent Document 1, even if the authentication code is not directly input, if an instruction displayed on the display unit is seen or a voyeur is taken, the authentication code is easily obtained by calculation. There is a problem that the authentication code is leaked to others. This is because the code corresponding to the pressed key is accepted as it is, so when a peep or voyeur is taken, the code that the input device accepts from the pressed key is known to the other person, and that code and display This is because the authentication code is derived by performing the calculation based on the instruction displayed on the section.

  An object of the present invention is to provide an input device that can prevent leakage of an authentication code even when an operation for inputting the authentication code is seen by others.

The invention of the input device according to claim 1 which achieves the above object
An input device for inputting an authentication code,
A touch sensor that accepts input;
A tactile sensation providing unit that vibrates the touch surface of the touch sensor;
When an input is received by the touch sensor, the tactile sensation providing unit intermittently presents a tactile sensation with respect to a target that touches the touch surface,
A control unit that controls to accept an authentication code based on the number of tactile sensations presented when an input determination operation is detected;
It is characterized by providing.

The invention according to claim 2 is the input device according to claim 1,
The input release of the touch sensor is detected as the input determination operation.

The invention according to claim 3 is the input device according to claim 1,
The input direction change accepted by the touch sensor is defined as the input determination operation.

The invention according to claim 4 is the input device according to claim 1, wherein the input device further includes:
A load detection unit for detecting a pressing load on the touch surface,
The input determining operation is that the pressing load detected by the load detecting unit satisfies a load standard.

Furthermore, the invention of the input device according to claim 5 that achieves the above object is
An input device for inputting an authentication code,
An input surface for input by pressing;
A load detection unit for detecting a pressing load on the input surface;
A tactile sensation providing unit that vibrates the input surface;
When a pressing load is detected by the load detection unit, the tactile sensation providing unit intermittently presents a tactile sensation to the object pressing the input surface,
A control unit that controls to accept an authentication code based on the number of tactile sensations presented when an input determination operation is detected;
It is characterized by providing.

The invention according to claim 6 is the input device according to claim 5,
The input determining operation is that the pressing load detected by the load detecting unit satisfies a load standard.

The invention according to claim 7 is the input device according to claim 5,
The input direction change with respect to the input surface is the input determining operation.

  ADVANTAGE OF THE INVENTION According to this invention, even when the operation which inputs an authentication code is seen by others, the input device which can prevent the leakage of an authentication code can be provided.

It is a block diagram which shows schematic structure of the input device which concerns on 1st Embodiment of this invention. It is a figure which shows the conceptual diagram of tactile sensation generation | occurrence | production of the input device which concerns on this invention. It is a flowchart which shows operation | movement of the input device which concerns on 1st Embodiment of this invention. It is a figure which shows the input operation on the touch surface according to the 1st example in the input device which concerns on 1st Embodiment of this invention. It is a figure which shows the timing of the tactile response in the input operation | movement of FIG. It is a figure which shows the input operation on the touch surface according to the 2nd example in the input device which concerns on 1st Embodiment of this invention. It is a figure which shows the timing of the tactile response in the input operation | movement of FIG. It is a block diagram which shows schematic structure of the input device which concerns on 2nd Embodiment of this invention. It is a figure which shows the input operation on a touch surface in the input device which concerns on 2nd Embodiment of this invention. It is a figure which shows the timing of the tactile response in the input operation | movement of FIG. It is a block diagram which shows schematic structure of the input device which concerns on 3rd Embodiment of this invention. It is a flowchart which shows operation | movement of the input device which concerns on 3rd Embodiment of this invention. It is a figure which shows the timing of the tactile response in the input operation according to the 1st example in the input device which concerns on 3rd Embodiment of this invention. It is a figure which shows the timing of the tactile response in the input operation according to the 2nd example in the input device which concerns on 3rd Embodiment of this invention. It is a figure which shows the input of the authentication code in the conventional input device, and an authentication method.

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

(First embodiment)
FIG. 1 is a block diagram showing a schematic configuration of an input device according to the first embodiment of the present invention. The input device 1 includes a touch sensor 11, a tactile sensation providing unit 12, and a control unit 13 that controls the overall operation. The touch sensor 11 receives an input by a finger or the like, and is configured by a known method such as a resistance film method, a capacitance method, or an optical method. The tactile sensation providing unit 12 vibrates the touch sensor 11 and is configured using, for example, a piezoelectric element. The control unit 13 controls the overall operation, and is configured by using, for example, a microprocessor equipped with a function such as a CPU.

  FIG. 2 shows an example of a mounting structure of the input device shown in FIG. In the input device 1 according to the present embodiment, the touch sensor 11 is planar and rectangular. The touch surface 11a of the touch sensor 11 is made of, for example, a transparent film or glass, and the back surface is made of glass or acrylic. When the touch surface 11a is pressed, the touch sensor 11 has a structure in which the pressed portion is slightly bent (distorted) according to the pressing force, or the structure itself is bent slightly. The tactile sensation providing unit 12 is disposed, for example, in contact with the touch sensor 11 so as to vibrate the touch sensor 11 and present a tactile sensation such as vibration to the user's finger. Further, while the touch sensor 11 detects an input by a finger or the like, the tactile sensation providing unit 12 vibrates the touch surface 11a of the touch sensor 11 and presents a tactile sensation to the fingertip.

  FIG. 3 is a flowchart showing the operation of the input apparatus according to this embodiment. When the touch sensor 11 detects contact by a contact target such as a finger or a stylus pen, the control unit 13 resets a counter value of a counter (not shown) provided in the control unit 13 to zero (steps S301 and S302). . The control unit 13 also resets the counter value of a timer (not shown) provided in the control unit 13 to zero (step S303). Then, as the wait time elapses until the tactile sensation occurs, the control unit 13 counts up the counter value of this timer to the value n (step S305). The control unit 13 continues to monitor whether contact with the touch sensor 11 by the contact target is detected during the wait time (step S304). Then, the control unit 13 controls the tactile sensation providing unit 12 so as to generate a tactile sensation due to vibration once with a wait time described later (step S306). The control unit 13 adds 1 to the counter value every time the tactile sensation providing unit 12 generates a tactile sensation once (step S307). Then, the control unit 13 receives the counter value when the input determination operation is detected during the wait time as an authentication code (steps S304 and S308).

  As a first example of the input determining operation, a touch target such as a finger is separated from the touch surface 11a. In this case, in step S304, the control unit 13 determines whether or not contact with the touch sensor 11 is detected. In addition, as a second example of the input determining operation, when a contact target such as a finger moves on the touch surface 11a, the moving direction changes more than a certain value. In this case, when detecting a change in the direction of input to the touch sensor 11, the control unit 13 accepts the counter value at the time of detection as an authentication code (steps S304 and S308). Hereinafter, examples of these two input determination operations will be described with reference to the drawings.

  FIG. 4 is a diagram illustrating the contact target on the touch surface 11a when the input determination operation is that the touch target is separated from the touch surface 11a. The touch position on the touch surface 11a is not particularly limited and may be any position such as a to e. Further, the touch target only needs to touch the touch surface 11a, and may continue to touch one position, or may slide on the touch surface 11a and move to another position.

FIG. 5 is a diagram illustrating tactile response timing when the authentication codes “4” and “6” are input by the input determination operation according to the first example. A black circle indicates a tactile response, a state A indicates a state where an authentication code “4” is input, and a state B indicates a state where an authentication code “6” is input. At time t _0, for example, when a user to position a on the touch surface 11a touches the finger, the control unit 13, controlled to tactile sensation providing unit 12 returns a tactile finger to vibrate the touch face 11a at a random timing To do. This tactile sensation is based on vibration. For example, various tactile sensations can be presented by changing the period and amplitude. For example, a tactile sensation such as a vibration such as “Bull Bull” or a tactile sensation such as pressing a key such as “click” is presented. Then, the user, where the counting the tactile to 4, at time t _1, when the finger is released from the touch surface 11a, the control unit 13 determines the authentication code. As described with reference to FIG. 3, the control unit 13 adds 1 to the counter value every time the tactile sensation providing unit 12 generates tactile sensation once, so that the tactile sensation providing unit 12 generates tactile sensation four times. At that time, the counter value is 4. Therefore, at this point, when the touch sensor 11 detects that the finger has left the touch surface, the control unit 13 determines the counter value 4 as an authentication code. In the same way, when the user counts tactile sensations up to 6, the control unit 13 determines the counter value 6 as an authentication code.

  The interval (wait time) for generating the tactile sensation is not limited to one fixed value. That is, as shown in FIG. 5, the tactile sensation can be set at random intervals. Moreover, even if it is set as a fixed interval while inputting one authentication code, if it changes into another interval when inputting another authentication code, it does not necessarily need to be a random interval about all tactile sensations. This is because it is easier for the user to present the tactile sensation at regular intervals, and the authentication code can be input without making a mistake. However, when the tactile sensation is always generated at regular intervals when all the authentication codes are input, the user can visually check the input state and calculate the time that the user's finger is touching the touch surface 11a. There is a risk that the authentication code can be guessed and the authentication code is leaked. Therefore, it is necessary to change the interval for generating the tactile sensation for each authentication code.

  FIG. 6 is a diagram illustrating a contact target on the touch surface 11a when the input determining operation is a change in a moving direction of the touch target such as a finger by a certain amount or more. The touch position on the touch surface 11a is not particularly limited, and may be moved from any position on the touch surface 11a to any position. In FIG. 6, the finger slides linearly from position a to position b and then to position c. The control unit 13 determines an authentication code based on this change in direction.

FIG. 7 is a diagram showing tactile response timing when the authentication codes “4” and “6” are input by the input determination operation shown in FIG. Similarly to FIG. 5, black circles indicate tactile responses, state A indicates a state in which the authentication code “4” is input, and state B indicates a state in which the authentication code “6” is input. At time t _0, for example, when a user to position a on the touch surface 11a touches the finger, the control unit 13, to vibrate the touch face 11a at random timing, and returns the tactile fingers. Then, the user, where the counting the tactile to 4, in the position b in time t _1, when changing the sliding direction, the control unit 13 determines the authentication code. As described with reference to FIG. 3, the control unit adds 1 to the counter value every time a tactile sensation is generated. Therefore, when the tactile sensation occurs four times, the counter value becomes 4. Yes. Therefore, at this point, when detecting a change in the sliding direction of the finger, the control unit 13 determines the counter value 4 as an authentication code. Subsequently, when the user counts the tactile sensation up to 6 while sliding the finger to the position c, when the sliding direction is changed, the control unit 13 determines the counter value 6 as the authentication code.

  As described above, in the input device according to the present embodiment, when the input is received by the touch sensor 11, the control unit 13 feels intermittently a tactile sensation with respect to an object that touches the touch surface 11a. The presenter 12 is controlled. And the control part 13 will receive the authentication code based on the frequency | count of the presented tactile sensation, if the operation | movement of input determination is detected. The tactile sensation is a feeling that only the user who is inputting the authentication code knows. For this reason, even when the input operation to the touch surface 11a of the touch sensor 11 by the user is seen by another person, the leakage of the authentication code can be prevented. In addition, by detecting the input determination operation described above as detection of input cancellation of the touch sensor 11 (the contact object has moved away from the touch surface 11a) or detection of a change in direction of input to the touch sensor 11, More intuitive operability can be provided to the user.

(Second Embodiment)
FIG. 8 shows an input device according to the second embodiment of the present invention, and FIG. 8 is a block diagram showing a schematic configuration. In addition to the input device shown in FIG. 1, this input device includes a load detection unit 24 that detects a pressing load. The load detection unit 24 detects a pressing load on the touch surface 21a (see FIG. 9) of the touch sensor 21, and is configured using an element that linearly reacts to a load such as a strain gauge sensor or a piezoelectric element, for example. Is done.

  Also in the input device according to the present embodiment, the two input determining operations exemplified above can be adopted. That is, as a first example of the input determining operation, a touch target such as a finger is separated from the touch surface 21a. In this case, in step S304, the control unit 23 determines whether contact with the touch sensor 21 is detected, or whether the load detected by the load detection unit 34 has become zero. In addition, as a second example of the input determining operation, when a contact target such as a finger moves on the touch surface 21a, the moving direction changes by a certain level or more. In this case, when detecting a change in the direction of input to the touch sensor 21, the control unit 23 accepts the counter value at the time of detection as an authentication code (steps S304 and S308).

  FIG. 9 is a diagram illustrating an example of the operation of the pressing target on the touch surface 21a when the input determining operation is to apply a pressing force that is equal to or greater than a predetermined load standard. The touch position on the touch surface 21a is not particularly limited, and may be moved from any position on the touch surface 21a to any position, or may not necessarily be moved. In FIG. 9, the finger moves linearly from position a to b and from position b to c.

FIG. 10 is a diagram showing the timing of tactile response when the authentication code “46” is input when the input determining operation is to apply a pressing force exceeding a predetermined load standard. Similarly to FIG. 5, black circles indicate tactile responses, state A indicates a state in which the authentication code “4” is input, and state B indicates a state in which the authentication code “6” is input. At time t _0, for example, when a user to position a on the touch surface 21a touches the finger, the control unit 23, to vibrate the touch surface at random timing, and returns the tactile fingers. Then, the user, where the counting the tactile to 4, at time t _1, when strengthening the pressing force to load standard P ₁ or more, the control unit 23 determines the authentication code. As described with reference to FIG. 3, the control unit 23 adds 1 to the counter value every time a tactile sensation is generated, so the counter value becomes 4 when the tactile sensation occurs four times. ing. Therefore, at this time, the control unit 23 detects that the pressing force becomes load standard P ₁ or more, to determine the counter value 4 as an authentication code. In a similar manner, the user, after the count tactile to 6, when the strengthened again finger load standard P ₁ or more, the control unit 23 determines the counter value 6 as the authentication code.

In Figure 10, after pressing force which is strengthened to load standard P ₁ or more, once the weakened below load standard P _1, it is being strengthened to load standard P ₁ or more re-determined authentication code "6" is input ing. Here, the user does not necessarily need to weaken the pressing force after inputting the first digit input code. For example, by setting a load reference P ₂ larger than the load reference P ₁ in the input device, the input can be determined by applying a larger pressing force when inputting the second digit or later of the authentication code. In this way, it is possible to set a plurality of load standards and input an authentication code over a plurality of digits.

  As described above, since the input device according to the present embodiment uses the input determination operation that the pressing load detected by the load detection unit 24 satisfies the load standard, the input device according to the first embodiment Similarly, even when an input operation by the user is seen by another person, it is possible to prevent leakage of the authentication code. In addition, since the input determination operation is that the pressing load satisfies the load standard, the authentication code can be input only by pressing the touch surface without moving the finger up, down, left, or right on the touch surface 21a. Therefore, even when an input operation by the user is seen by another person, it is possible to reliably prevent leakage of the authentication code.

(Third embodiment)
FIG. 11 is a block diagram showing a schematic configuration of the input device according to the third embodiment of the present invention. The input device includes a tactile sensation providing unit 32, a control unit 33 that controls the entire operation, a load detection unit 34 that detects a pressing load, and an input unit 35 that includes an input surface on which an input is made by pressing. The load detection unit 34 detects a pressing load on the input surface, and the tactile sensation providing unit 32 vibrates the input surface. A description of the same components as those of the input device according to the first and second embodiments of the present invention will be omitted.

  FIG. 12 is a flowchart showing the operation of the input device according to this embodiment. When the load detection unit 34 detects a press by a pressing target such as a finger or a stylus pen, the control unit 33 resets a counter value of a counter (not shown) provided in the control unit to zero (steps S1201 and S1202). . The control unit 33 also resets the counter value of a timer (not shown) provided in the control unit 33 to zero (step S1203). Then, the control unit 33 counts up the counter value of the timer to a value n as the wait time elapses until the tactile sensation occurs (step S1205). The control unit 33 continues to monitor whether or not the load detection unit 34 has detected a pressure on the input surface by the pressing target during this wait time (step S1204). Then, the control unit 33 controls the tactile sensation providing unit 32 so as to generate a tactile sensation due to vibration once with the above-described wait time interposed therebetween (step S1206). The control unit 33 adds 1 to the counter value of the counter every time the tactile sensation providing unit 34 generates a tactile sensation once (step S1207). Then, the control unit 13 accepts the counter value when the input determination operation is detected during the wait time as an authentication code (steps S1204 and S1208).

  As a first example of this input determination operation, it is mentioned that the pressing force detected by the load detection unit satisfies the load standard. In this case, in step S1204, the control unit 33 determines whether or not the pressing force satisfies the load standard. In addition, the position of the pressing target on the input surface in this case is not particularly limited, and may be any position on the input surface, for example, a to e in FIG. Further, the pressing target only needs to press one of the positions on the input surface, and may continue to press one position, or may slide on the input surface and move to another position. .

FIG. 13 is a diagram showing tactile response timing in the input operation according to the first example. Similarly to FIG. 5, black circles indicate tactile responses, state A indicates a state in which the authentication code “4” is input, and state B indicates a state in which the authentication code “6” is input. At time t ₀ , for example, when the user presses a position a on the input surface with a finger, the control unit 33 vibrates the input surface at random timing and returns a tactile sensation to the finger. When the user counts the tactile sensation up to 4, when the finger is removed from the input surface at time t ₁ , the control unit 33 determines the authentication code. As described with reference to FIG. 3, each time the tactile sensation providing unit 32 generates a tactile sensation, the control unit 33 adds 1 to the counter value of the counter. The value is 4. Therefore, at this point, when detecting that the finger has moved away from the input surface, the control unit 33 determines the counter value 4 as the authentication code. When the user has counted tactile sensations up to 6, the control unit 33 determines the counter value 6 as an authentication code.

As shown in FIG. 13, the load reference may be zero. In this case, the input is determined when the pressing target is separated from the input surface. It is also possible to enter the authorization code if it becomes the pressing force load standard P ₁ or more, as shown FIG 10. Also, a plurality of load standards may be set, and an authentication code extending over a plurality of digits can be input.

  Further, as a second example of the input determining operation, as shown in FIG. 6, when a pressing target such as a finger moves on the input surface, the moving direction changes more than a certain value. In this case, when detecting a change in the direction of the input accepted by the input surface 35, the control unit 13 accepts the counter value at the time of detection as an authentication code (steps S1204 and S1208).

FIG. 14 is a diagram illustrating tactile response timing in the input operation according to the second example in the input device according to the third embodiment of the present invention. As in FIG. 7, black circles indicate a tactile response, state A indicates a state in which an authentication code “4” is input, and state B indicates a state in which an authentication code “6” is input. At time t ₀ , for example, as in FIG. 6, when the position a on the input surface is pressed with a finger, the control unit 33 causes the tactile sensation providing unit 32 to vibrate the input surface at random timing, Control to return. Then, the user, while sliding the finger to a position b, where counting the tactile to 4, at a position b in time t _1, when changing the sliding direction, the control unit 33 determines the authentication code. Subsequently, when the user counts the tactile sensation up to 6 while sliding the finger to the position c, when the sliding direction is changed, the control unit 33 determines the counter value 6 as an authentication code.

  As described above, in the input device according to the present embodiment, when the load detection unit 34 detects the pressing load, the control unit 33 intermittently feels the pressing target pressing the input surface. The tactile sensation providing unit 32 is controlled so as to be presented. And the control part 33 will receive the authentication code based on the frequency | count of the presented tactile sense, if the operation | movement of input determination is detected. Thereby, even when the input operation of the authentication code by the user is seen by others, the leakage of the authentication code can be prevented. By detecting the input determination operation as detecting that the pressing load satisfies the load standard, the authentication code can be input only by pressing the touch surface. Therefore, it is possible to reliably prevent leakage of the authentication code. In addition, by detecting the input determination operation as a detection of a change in input direction, intuitive operability can be provided to the user.

  For example, in the input device according to any of the above-described embodiments, it is conceivable that an operation other than the input determination operation is detected during the input of the authentication code. Specifically, when a change in the input direction is set as an input determination operation, the user may release his / her finger from the touch surface (input surface) while inputting the authentication code. In this case, for example, when the touch sensor (11, 21) or the load detection unit (24, 34) detects that the finger has been released before the authentication code is determined, the control unit (13, 23, 33). It is also possible to hold or reset the counter value. Furthermore, the counter value can be reset after the counter value is held for a predetermined time. Specifically, when the control unit (13, 23, 33) detects that the finger has moved away from the touch surface 11a (input surface) before detecting a change in the sliding direction of the finger, a predetermined time Can hold the counter value of the counter. Thereafter, the control unit (13, 23, 33) is touched by the touch sensor (11, 21) or the load detection unit (24, 34) again (pressing the touch surface 11a (input surface) within a predetermined time). ) Is detected, the tactile sensation count can be restarted from the counter value. Even after a predetermined time during which the counter value can be held elapses, the touch sensor (11, 21) or the load detection unit (24, 34) does not detect contact (press) of the finger with the touch surface 11a (input surface) again. In this case, the control unit (13, 23, 33) can reset the counter value of the counter and cancel the input state.

  In addition, when the touch sensor (11, 21) detects a contact by another contact target while detecting a contact with the touch surface 11a of a certain contact target, or the load detection unit (24, 34). The control unit (13, 23, 33) also determines the input even when the pressing by the other pressing target is detected while the pressing to the input surface by the certain pressing target is being detected. It is also possible to configure the input device (10, 20, 30) so that the input is determined when there is contact or pressing at the point.

  Furthermore, when the number of input digits of the authentication code is determined, the user counts up to the number of tactile sensations corresponding to the value of the authentication code of the last digit, and then releases the finger from the touch surface 11a (input surface). Also, the authentication code is determined and the input can be terminated. That is, when the counter value of the counter matches the value of the last digit of the authentication code, when the touch sensor (11, 21) does not detect the touch on the touch surface 11a to be touched, Even when the pressure on the input surface is no longer detected by the load detection unit (24, 34), the control unit (13, 23, 33) can determine the authentication code and end the input. Thereby, the operativity according to the user's sense can be provided.

  In addition, the present invention provides an input device that can prevent leakage of an authentication code even when an operation for inputting the authentication code is seen from another person by providing the user with a tactile sensation without providing a display unit. be able to. However, even if the display unit is provided, in the present invention, there is no relationship between the display on the display unit and the authentication code received by the input device. For this reason, even when the present invention includes a display unit, it is possible to provide an input device that can prevent an authentication code from leaking to others.

  Although the present invention has been described based on the drawings and examples, it should be noted that those skilled in the art can easily make various modifications and corrections based on the present disclosure. Therefore, it should be noted that these variations and modifications are included in the scope of the present invention. For example, the functions included in each functional unit, each step, etc. can be rearranged so that there is no logical contradiction, and a plurality of functional units, steps, etc. can be combined into one or divided. It is.

  For example, the load detection unit (24, 34) and the tactile sensation providing unit (22, 32) may constitute the load detection unit (24, 34) and the tactile sensation providing unit (22, 32) by sharing the piezoelectric element. Is possible.

DESCRIPTION OF SYMBOLS 11 Touch sensor 11a Touch surface 12 Tactile sense presentation part 13 Control part 21 Touch sensor 21a Touch surface 22 Tactile sense presentation part 23 Control part 24 Load detection part 32 Tactile sense presentation part 33 Control part 34 Load detection part 35 Input part

Claims (7)

An input device for inputting an authentication code,
A touch sensor that accepts input;
A tactile sensation providing unit that vibrates the touch surface of the touch sensor;
When an input is received by the touch sensor, the tactile sensation providing unit intermittently presents a tactile sensation with respect to a target that touches the touch surface,
A control unit that controls to accept an authentication code based on the number of tactile sensations presented when an input determination operation is detected;
An input device comprising: The input device according to claim 1,
An input device characterized in that the input release of the touch sensor is detected as an operation for determining the input. The input device according to claim 1,
An input apparatus characterized in that an input direction change accepted by the touch sensor is used as the input determination operation. The input device according to any one of claims 1 to 3, further comprising:
A load detection unit for detecting a pressing load on the touch surface,
An input device characterized in that the input determination operation is that the pressing load detected by the load detection unit satisfies a load standard. An input device for inputting an authentication code,
An input surface for input by pressing;
A load detection unit for detecting a pressing load on the input surface;
A tactile sensation providing unit that vibrates the input surface;
When a pressing load is detected by the load detection unit, the tactile sensation providing unit intermittently presents a tactile sensation to the object pressing the input surface,
A control unit that controls to accept an authentication code based on the number of tactile sensations presented when an input determination operation is detected;
An input device comprising: The input device according to claim 5, wherein
An input device characterized in that the input determination operation is that the pressing load detected by the load detection unit satisfies a load standard. The input device according to claim 5, wherein
An input device characterized in that an input direction change with respect to the input surface is the input determining operation.

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