JP2015111319A - Information input apparatus, screen display method, and information input program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an information input apparatus that makes the theft of information difficult due to an operation screen being looked over the shoulder of a user.SOLUTION: There is provided an information input apparatus that has an input device and outputs the content of operation acquired by the input device to a display apparatus, the information input apparatus having display control means for creating first display, which is the screen display moving according to the operation acquired by the input device and outputting the first display to the display apparatus, where the display control means creates second display moving in a different manner from the first display, and composes the first display and second display and outputs the composite display to the display apparatus.

Description

  The present invention relates to an information input device that prevents information leakage due to peeping at a screen.

  When a computer, information terminal, ATM (Automated Teller Machine), etc. are used in a public place, there is a risk that information such as a personal identification number entered by the user may be stolen by a third party. For example, when inputting a personal identification number by pressing a number displayed on the screen, it is possible to grasp which number is pointed by looking at the hand over the shoulder.

  In order to cope with this problem, a technique for making it difficult to grasp input information from the outside has been devised. The personal identification number input device described in Patent Document 1 is characterized in that the arrangement of numbers on the touch panel is randomly changed every time a personal identification number is input. According to the invention, since the arrangement of numbers changes every time an input is made, it is difficult to guess the input content by stealing the movement of the hand.

  However, the invention can prevent theft of information by looking into the hand, but cannot prevent theft of information by looking directly at the screen. For example, if a malicious program such as a hidden camera installed in the vicinity of the screen or a Trojan horse installed in a computer steals the operation screen directly instead of at hand, it is easy to determine which character the user has selected. You can get acquainted with it.

  In order to cope with this, the authentication interface described in Non-Patent Document 1 uses a technique in which a unique symbol is assigned to each user in advance and the symbol is used for inputting a number. On the screen, each key of the virtual keyboard is displayed with a different kind of symbol. The user can change the arrangement of symbols displayed on each key of the virtual keyboard by selecting redisplay. The user redisplays the virtual keyboard until the symbol assigned to the user is displayed so as to overlap the number to be input, and presses the input key when they match. Repeat this operation to enter the password one character at a time. In this way, unless the user knows what the symbol assigned to the user is, the contents of the input cannot be grasped even if the screen is viewed.

JP 2000-099801 A

Tetsuji Takada, “fakePointer: An authentication method that is secure against peeping attacks by video recording”, Transactions of Information Processing Society of Japan, Vol.49, No.9, p.3051-3061, Sep. 2008

Information leakage due to screen stealing will be described with reference to FIG. FIG. 11 is a password input screen for Internet banking. Many of the Internet banking have a function of a software keyboard for inputting a personal identification number by selecting a character on the screen in order to improve security. However, if the operation screen can be acquired by some means, it is possible to know which character the user has selected. In the example of FIG. 11, it can be seen that the character “H” has been input by the position of the mouse pointer and the character inversion or pressing animation. The operation screen can be obtained by taking a sneak shot of the screen shot with malicious software or by peeping out of the room using a telescope, classically.

  For example, the technique described in Non-Patent Document 1 can be used to prevent leakage of information due to direct viewing of the screen. However, this invention has a drawback that the input speed is slow because the virtual keyboard must be redisplayed until the symbol assigned to it is displayed at the target location. When n symbols are assigned to n types of characters, it is necessary to redisplay up to n-1 times every time one digit is entered. I can't. In addition, since the user needs to remember the assigned symbols, there is a problem that the burden on the user increases. Therefore, in order not to put a burden on the user, there is no effective means other than a filter that makes it difficult to physically look into the screen, and defense with anti-virus software.

  The present invention has been made in consideration of the above-described problems, and an object thereof is to provide an information input device that makes it difficult to steal information by looking into an operation screen.

  In order to solve the above-described problems, the information input device according to the present invention generates a dummy display in parallel with the real display and synthesizes it on the screen when reflecting the contents of the operation performed by the user on the screen. I took the technique of displaying.

  Specifically, an information input device according to the present invention is an information input device that has an input device and outputs the content of an operation acquired by the input device to a display device, and is acquired by the input device. A display control unit that generates a first display that is a screen display that moves in response to an operation and outputs the first display to the display device, the display control unit is a screen display that operates differently from the first display. A second display is generated, and the first display and the second display are combined and output to the display device.

  An input device is an input interface operated by a user. Typically, a pointing device such as a mouse, a touch panel, a touch screen, a trackball, a pointing stick, a touch pad, a joystick, a data glove, or a pen tablet is used. Devices and keyboards. The display device is a display device for displaying an operation result to the user.

  The first display is a display on the screen that moves corresponding to the content of the operation performed by the user through the input device. When the input device is a device that operates a pointer such as a mouse, the first display is a pointer that moves on the screen. In addition, when the coordinates on the screen are directly specified, such as a touch panel, the first display is a push button display that changes its appearance when pressed.

The second display is a dummy display that operates differently from the content of the operation performed by the user. For example, when the user moves the mouse to the left, the display control means generates a first display that moves the mouse pointer to the left, and simultaneously moves a dummy pointer that is the same as or similar to the mouse pointer to the right. Generate a second indication to do. The “motion” of the second display includes not only the movement of the cursor and pointer, but also an animation that emphasizes an arbitrary portion. That is, the second display may highlight a portion different from the portion designated by the user.

  The display control unit is a unit that synthesizes the first display corresponding to the operation acquired by the input device and the generated second display and outputs them to the display device. As a result of combining the two displays, a real display (for example, a mouse pointer) related to the user's operation and a dummy display (a pointer that is the same as or similar to the mouse pointer) that moves differently from the user's operation are simultaneously displayed. It is drawn on the screen.

  According to the form of the invention described above, the user can intuitively recognize that the display that moves in the same manner as the operation performed by the user is authentic, but the person who is peeping is considered to be the real display. The dummy display cannot be determined. Therefore, even if a third party looks into the operation screen from the outside, it is not possible to identify which is the correct display, and it is not possible to know what the user is entering. Theft can be prevented.

  In addition, the display control means combines the first display and the second display so that the second display moves in synchronization with the first display, and outputs to the display device. This may be a feature.

  When a dummy display is added on the screen, the dummy display may be controlled to move in synchronization with the real display related to the user's operation. Synchronizing refers to matching the timing when the display related to the user's operation moves with the timing when the dummy display moves. By doing in this way, since all the displays move simultaneously while the user is operating, it becomes difficult to identify the genuine display from the outside.

  Further, the input device is a pointing device, the first display and the second display are moving pointers having the same appearance, and the display control means is based on an operation performed by a user. The second display may be generated.

  The pointing device refers to a mouse or a trackball for moving a pointer on the screen, a pointing stick, a touch pad, a joystick, a data glove, a pen tablet, and the like. The appearance of the pointer refers to the shape, size, color, etc. of the pointer, and it means that having the same appearance cannot be distinguished from the appearance. The display control means generates the second display based on the operation performed by the user. For example, a dummy operation may be stored in the device in advance by the user, and the second display may be generated using the dummy operation, or a predetermined conversion may be added to the content of the operation performed by the user. The second display may be generated in real time using the screen. By generating the second display, that is, the movement of the dummy pointer based on the operation performed by the person, it is possible to make the movement of the dummy pointer natural, so it is difficult to determine its authenticity from the behavior of the pointer. become.

  Moreover, the information input device according to the present invention includes a trajectory information storage unit that stores a plurality of trajectories of the second display, and the display control unit includes a plurality of trajectories stored in the trajectory information storage unit. The second display may be generated using any one of them.

  The trajectory information storage means is means for storing the movement of the dummy pointer. The trajectory information storage means may store a trajectory created in advance by a user, or may store a trajectory related to an operation performed by another user. By extracting the trajectory to be used from the plurality of stored trajectories, the trajectory of the dummy pointer can be made different each time, and therefore, it is possible to prevent authentication by the attacker by observing the pointer.

Further, the display control means may generate a plurality of the second displays, synthesize them with the first displays, and output them to the display device.

  By outputting a plurality of dummy displays on the screen, it becomes more difficult to distinguish the real display from the outside. Increasing the number of dummy displays can increase the difficulty of the attack, and reducing the number of dummy displays makes it easier for the user to operate. The number of dummy displays can be a value that balances both.

  In addition, this invention can be specified as an information input device containing at least one part of the said means. In addition, the present invention can be specified as a screen display method including at least a part of processing performed by the above means, or can be specified as a program for operating the information input device. The above processes and means can be freely combined and implemented as long as no technical contradiction occurs.

  According to the present invention, it is possible to provide an information input device that makes it difficult to steal information by looking into an operation screen.

It is a figure explaining the flow of the data which the information input device concerning this invention handles. It is a functional lineblock diagram concerning a first embodiment. It is a process flowchart figure concerning 1st embodiment. It is an example of the dummy locus | trajectory information which concerns on 1st embodiment. It is a figure explaining the dummy pointer which concerns on 1st embodiment. It is an example of a display of the PIN code input screen which concerns on 1st embodiment. It is an example which produces | generates dummy locus | trajectory information in 2nd embodiment. It is a display example of a personal identification number input screen according to the second embodiment. It is an example of the PIN code input screen which concerns on 3rd embodiment. It is a figure explaining the PIN code input screen concerning a third embodiment in detail. It is an example of the input screen which concerns on a prior art.

  FIG. 1 is a diagram for briefly explaining the flow of data handled by the information input device according to the present invention. The information input device according to the present invention acquires the content of the operation performed by the user from the input device, and generates a corresponding first display. Further, a dummy operation content similar to the operation performed by the user is generated, and a corresponding second display is generated. The first display and the second display are combined and output to the display device. A system configuration for realizing this operation will be described in each embodiment.

(First embodiment)
<System configuration>
The information input device according to the first embodiment will be described. The information input device according to the first embodiment moves the mouse pointer displayed on the screen by the user operating the mouse, and presses the characters on the virtual keyboard that are also displayed on the screen to Is a device for inputting.

  FIG. 2 is a system configuration diagram of the information input apparatus according to the present embodiment. The information input device 100 is a computer including a CPU, a main storage device, and an auxiliary storage device (all not shown) as hardware. The programs stored in the auxiliary storage device are loaded into the main storage device and executed by the CPU, thereby realizing the functions shown in FIG. Note that all or part of the information input device 100 may be executed using a circuit designed for exclusive use.

  The information input device 100 includes an input device 101, an operation acquisition unit 102, a dummy operation generation unit 103, and a display control unit 104. A display device 200 is connected to the information input device 100.

  The input device 101 is a human interface device operated by a user. The input device may be one that designates coordinates on the screen by moving a pointer like a mouse, or one that designates coordinates directly like a touch panel. In the present embodiment, the input device is a mouse.

The operation acquisition unit 102, the dummy operation generation unit 103, and the display control unit 104 are display control means in the present invention.
The operation acquisition unit 102 is a means for acquiring operation information, that is, the content of an operation performed by the user from the input device 101. For example, when the input device moves the pointer on the screen, the operation acquisition unit 102 can acquire the direction and distance that the pointer moves as operation information, and the input device directly designates coordinates. If there is, the designated coordinates can be acquired as the operation information. Further, the operation acquisition unit 102 has a function of outputting the acquired operation information to the outside (for example, an information processing device connected to the information input device).

  The dummy operation generation unit 103 is means for generating dummy operation information (hereinafter referred to as dummy operation information) similar to the content of the operation performed by the user. The dummy operation generation unit 103 stores a plurality of pieces of locus information that are recorded in advance as dummy locuses of the mouse pointer. The dummy operation generation unit 103 selects a locus to be used after selecting it at random. Operation information corresponding to the trajectory is generated. The plurality of pieces of trajectory information stored in the dummy operation generation unit 103 may be generated in any way. For example, the designer of the information input device 100 may generate trajectory information in advance and store it in the dummy operation generation unit 103. Further, the user of the information input device 100 may input trajectory information as setting information and store it in the dummy operation generation unit 103. Alternatively, operation information previously input by the user to the information input device 100 may be stored as trajectory information in the dummy operation generation unit 103.

The display control unit 104 has two functions. One is a function of acquiring operation information or dummy operation information from the operation acquisition unit 102 and the dummy operation generation unit 103 and generating a display based on each operation information. For example, when the operation content is mouse movement, a display for moving the mouse pointer according to the acquired locus is generated. Similarly, a display corresponding to the dummy operation information is also generated.
The other is a function of combining the generated displays and outputting them to the display device. As a result, a real mouse pointer (display corresponding to the operation information) and a dummy mouse pointer (display corresponding to the dummy operation information) related to the user's operation are displayed simultaneously on the screen of the display device.
In the present embodiment, the real and dummy mouse pointers differ only in their movement trajectories and have the same appearance (shape, color, etc.).

  The display device 200 is connected to the information input device 100 and is a means for presenting the generated display to the user. In the present embodiment, the display device 200 is a display device.

<Processing flow>
Details of processing performed by the information input device according to the present embodiment will be described with reference to FIG. 3 which is a processing flowchart of the information input device 100.

When the user performs an input operation through the input device 101, the operation acquisition unit 102 acquires operation information that is the content of the operation (S11). In the case of the present embodiment, since the user performs an operation of selecting a character displayed on the screen by moving the mouse pointer, the operation acquisition unit 102 acquires the moving direction and moving amount of the mouse pointer as operation information. can do. Since the operation acquisition unit 102 acquires operation information every time an event that the mouse has moved occurs, a plurality of operation information is acquired by a single mouse operation. The operation information is transmitted to the dummy operation generation unit 103 and the display control unit 104 every time it is acquired.

  Subsequently, the display control unit 104 generates a corresponding first display based on the received operation information (S12). That is, a signal for drawing while moving the mouse pointer to the display device is generated a plurality of times.

In parallel with the operation in step S12, the dummy operation generation unit 103 generates dummy operation information (S13).
As described above, the dummy operation information is dummy operation information similar to the operation performed by the user. In the first embodiment, the dummy operation generation unit 103 generates dummy operation information using trajectory information stored in advance. FIG. 4 is an example of trajectory information stored in the dummy operation generation unit 103. A plurality of such trajectory information is stored in the dummy operation generation unit 103, and the dummy operation generation unit 103 randomly selects one when generating the dummy operation information. In this example, dummy operation information is generated using the trajectory 401 shown in FIG. That is, a moving direction and a moving amount for moving the pointer along the trajectory 401 are generated as dummy operation information and sequentially transmitted to the display control unit 104. The amount of movement of the pointer when generating dummy operation information is preferably equal to the amount of movement of the mouse pointer by the user's operation.

  Subsequently, the display control unit 104 generates a corresponding second display based on the received dummy operation information as in step S12 (S14). That is, a signal for moving the mouse pointer in accordance with the trajectory 401 that is a dummy trajectory is generated.

  Subsequently, the display control unit 104 combines the two generated displays, generates a drawing signal for the display device 200, and outputs the drawing signal to the display device 200 (S15). As a result, the mouse pointer operated by the user and the generated dummy mouse pointer are drawn on the same screen.

  Note that there may be a plurality of dummy operation information generated in step S13, and each dummy operation information may be generated based on different trajectory information. In this case, a corresponding number of second displays are respectively generated in step S14, and as a result of combining in step S15, a plurality of dummy pointers are output to the screen.

This will be specifically described with reference to an example of the screen. FIG. 5 is a diagram for explaining a screen display when the user performs an operation of moving the mouse pointer. In FIG. 5, the color of the mouse pointer is changed to show that the same color pointer is displayed at the same time.
Assume that the mouse pointer is at the position (A) in FIG. 5 when the operation is started, and the user operates the mouse to move the pointer to the position (A1). At this time, operation information corresponding to the locus indicated by the solid line is sequentially transmitted from the operation acquisition unit 102 to the display control unit 104. At the same time, the dummy operation generation unit 103 generates dummy operation information using the trajectory 401 shown in FIG. From the dummy operation generation unit 103 to the display control unit 104, operation information corresponding to the locus indicated by the dotted line corresponding to the movement distance by the user's operation in the locus 401 is sequentially transmitted.

  Then, the display control unit 104 generates a first display using the solid line trajectory and generates a second display using the dotted line trajectory, combines them, and outputs them to the display device. As a result, the pointer is divided into two from the position (A) and moved to two positions (A1) and (B1). That is, the dummy pointer 502 points to an irrelevant position (B1) with respect to the real pointer 501 at the position (A1). When the user further moves the mouse, the real pointer 501 moves to a position corresponding to the operation, and the dummy pointer 502 further moves along the locus 401 by the distance the pointer 501 has moved.

  As described above, according to the first embodiment, since the dummy pointer having the same shape is displayed on the screen, it is possible for a person looking into the screen to recognize which is a real pointer. Without knowing what the user is pointing to. On the other hand, the user can easily recognize that the pointer moving in accordance with the operation performed by the user, that is, the pointer in which the direction of the mouse operation performed by the user matches the direction of the movement is genuine.

  FIG. 6 shows a display example when the embodiment described above is applied to a password input screen for Internet banking. On the screen, a password is input by selecting a character displayed on the screen. Although there is only one real pointer displayed on the screen, multiple dummy pointers move in different directions on the screen, so even if you look into the screen, you can see which character the user is pointing to. It is extremely difficult to grasp.

  In the first embodiment, the mode in which the pointer is moved by the mouse has been described. However, the input device is not limited to the mouse as long as the pointer on the screen can be moved. For example, it may be a touch pad or a pointing stick such as TrackPoint (registered trademark). If the input device is a stick type with little finger movement, it is almost impossible to determine where the user is pointing even if the user's hand is sneak at the same time as the screen. .

  Further, the first embodiment can be applied by adding a pointer on the screen even if the device has only a touch panel like a portable information terminal and directly designates coordinates on the screen. In this case, for example, a part of the touch panel may be used as a touch pad and used for a pointer operation.

  In the description of the embodiment, the dummy operation information is generated using the trajectory stored in advance. However, the contents of the operation performed by another user are stored, and the dummy operation information is stored using the operation content. It may be generated. For example, a locus of a pointer when a certain user performs an input operation may be added to the locus information and used when another user uses the apparatus.

(Second embodiment)
In the first embodiment, dummy operation information is generated using trajectory information stored in advance, but in the second embodiment, dummy operation information is used based on an operation performed by a user without using trajectory information. Is automatically generated. That is, based on the operation information input from the input device, both real mouse pointer display and dummy mouse pointer display are performed. The system configuration according to the second embodiment is the same as that of the first embodiment, except that the dummy operation generation unit 103 does not store trajectory information. The operations other than the steps described below are the same as those in the first embodiment.

The dummy operation generation unit 103 according to the second embodiment is a unit that partially changes the content of the operation performed by the user and outputs it as dummy operation information. For example, when the content of the operation acquired by the operation acquisition unit 102 is “move the mouse pointer upward by 100 pixels”, the dummy operation generation unit 103 “moves the mouse pointer rightward by 100 pixels” "
As described above, the operation contents partially changed are output as dummy operation information.

A method for generating dummy operation information performed by the dummy operation generation unit 103 in step S13 will be described. In the present embodiment, part of the operation information performed by the user is rewritten in step S13, and the operation information is used as dummy operation information. Specifically, the rewriting can be performed by the following method.
(1) If the operation information is a movement of the pointer, change the movement direction. (2) If the operation information is a movement of the pointer, change the movement direction and the movement distance. (3) The operation information specifies the coordinates. If it is, the coordinates are changed. The movement direction can be changed, for example, by adding a specific angle to the direction of the operation performed by the user. The movement distance can be changed by multiplying the movement distance of the operation performed by the user by a specific coefficient. By doing so, the position of the dummy pointer indicates a place unrelated to the user's operation. In the present embodiment, the method (1) is used.

FIG. 7 is a diagram for explaining a method of generating dummy operation information when the user performs a mouse pointer movement operation. In FIG. 7, the color of the mouse pointer is changed to indicate that the same color pointer is displayed at the same time.
It is assumed that when the user starts the operation, the mouse pointer is at the position (A) in FIG. When the user operates the mouse upward (0 degree direction) to move the pointer to the position (A1), the dummy operation generation unit 103 and the display control unit 104 change from (A) to (A1). A travel route is transmitted. In this example, the dummy operation generation unit 103 outputs information obtained by changing the movement direction by 90 degrees clockwise as dummy operation information. Since the changed moving direction is the right direction (90-degree direction), the position of the pointer based on the dummy operation information is (B1). Similarly, when the pointer is operated to the right (90 degrees) and moved to the position (A2), the movement direction based on the dummy operation information is downward (180 degrees), so the position of the pointer is (B2 )

  FIG. 8 shows a display example when the present embodiment is applied to the example of FIG. In this example, in addition to the real pointer 801, four dummy pointers are generated, and different angles are added for each moving direction. Thus, since the five pointers move in different directions, it is difficult for a third party to see which one is a real pointer even when viewing the screen. Further, since the dummy pointer does not move in the same direction as the real pointer, the user can easily determine which is the real pointer.

  As described above, in the second embodiment, since dummy trajectory information is mechanically generated from an operation performed by the user, all pointers exhibit similar behaviors, and each pointer indicates a disjoint position. There is a feature.

  In the example of FIG. 7, the drawing of the dummy pointer is started with the initial position (A) of the real pointer as the start position, but the position where the drawing of the dummy pointer is started may be a random position on the screen. Further, the screen may be divided into regions, and the angle to be added and the coefficient to be multiplied in each region may be changed, or the value to be added and multiplied at a predetermined interval may be changed.

(Third embodiment)
In the first and second embodiments, the user moves the pointer on the screen by operating the mouse. However, the third embodiment displays on the screen by operating the touch panel by the user. In this mode, the virtual keyboard is pressed. The system configuration according to the third embodiment is the same as that of the second embodiment. The operations other than the steps described below are the same as those in the first embodiment.

  The input device 101 in the third embodiment is a touch panel provided on the operation screen. A position on the operation screen can be specified by pressing an arbitrary place on the panel with a finger. In the present embodiment, a mode in which a personal identification number is input through the input device 101 that is a touch panel will be described. FIG. 9 is a personal identification number input screen displayed to the user through the display device 200. The user inputs the personal identification number by pressing the displayed number.

  Processing steps in this embodiment will be described. In step S11, the operation acquisition unit 102 acquires the pressed position on the screen as operation information. Here, assuming that the user selects the number 3, operation information “the position corresponding to the“ 3 ”key has been pressed” is acquired by the operation acquisition unit 102, and the dummy operation generation unit 103 and the display control are performed. Transmitted to the unit 104.

  Subsequently, in step S12, the display control unit 104 generates a corresponding first display based on the received operation information. Here, it is assumed that an animation is performed to dent the display of the number corresponding to the pressed position. Accordingly, in this example, the display control unit 104 generates a display in which the key portion representing “3” of the virtual keyboard is recessed as shown in FIG.

  In parallel with the operation in step S12, the dummy operation generation unit 103 generates dummy operation information (S13). In the present embodiment, the dummy operation generation unit 103 generates dummy operation information by changing the coordinates specified by the user. Here, it is assumed that dummy operation information that “randomly determined coordinates have been pressed out of an area corresponding to a key other than the pressed key” is generated. Thereby, for example, dummy operation information “a position corresponding to the“ 4 ”key has been pressed” is generated and transmitted to the display control unit 104. The display control unit 104 generates a corresponding second display based on the received dummy operation information (S14). That is, a display in which the key portion representing “4” of the virtual keyboard is recessed is generated.

  Subsequently, the display control unit 104 synthesizes the generated first display and second display, generates a drawing signal for the display device 200, and outputs it to the display device 200 (S15). As a result, as shown in FIG. 10A, a display is displayed on the screen as if the “4” key was simultaneously pressed in addition to the “3” key pressed by the user.

  In the third embodiment, dummy operation information that a coordinate different from the designated coordinate is designated is generated in the input form in which the user directly designates the coordinate on the screen. Thereby, even if the attacker acquires display data (screen shot) of the operation screen, it is difficult to grasp the character selected by the user as in the first and second embodiments.

  Also in this embodiment, a plurality of dummy operation information may be generated as in the first and second embodiments. For example, if three pieces of dummy operation information designating different coordinates are generated in response to the user's operation, the screen display is as shown in FIG. 10B, and the password is stolen based on the screen shot. Can be made more difficult.

  In this embodiment, an example in which a virtual keyboard pressing animation is output as a display corresponding to an operation has been described. However, for example, the display may highlight a selected portion or change a color. There may be. The display form can be changed as necessary.

(Modification)
The description of each embodiment is an exemplification for explaining the present invention, and the present invention can be appropriately modified or combined in a range not departing from the gist of the invention. For example, the first embodiment and the third embodiment may be combined to display a plurality of dummy mouse pointers and display a plurality of number pressing animations when pressing a number.

  Further, when the dummy operation generation unit 103 generates dummy operation information, control may be performed so that the dummy pointer does not go out of a predetermined area. This predetermined area is preferably the same as an area where the real mouse pointer can move (mouse pointer movement area). For example, on a virtual keyboard input screen using a mouse, it is preferable that the moving area of the mouse pointer and the dummy pointer be matched with the display range of the virtual keyboard. If the dummy pointer moves out of the range of the virtual keyboard and moves in an empty place, it can be assumed that the pointer is not genuine, but this makes it more difficult to determine authenticity.

  As a control for preventing the dummy pointer from going out of a predetermined area, the following method can be considered. The first method is a method of stopping a pointer that tries to go out of a predetermined area. The second method is a method of reversing the moving direction of the pointer that moves out of a predetermined area. That is, when moving in the direction of increasing X beyond the maximum value of the X coordinate, for example, it is moved in the direction of decreasing X. The third method is a method of looping the pointer on the assumption that both ends of the area are connected. That is, when moving in the direction of increasing X beyond the maximum value of the X coordinate, the pointer appears at the position of the minimum value of the X coordinate and moved in the direction of increasing X.

  Similarly, the moving speed and direction may be adjusted so that the dummy pointer does not move too far from the original pointer. By doing so, it is possible to eliminate the unnaturalness caused by the dummy pointer being extremely away from the operation target area.

  The display control unit 104 may reset the position of the pointer on the screen or reassign it at an appropriate timing. That is, processing such as swapping dummy pointers and real pointers or redrawing all pointers at new positions may be performed. The new position may be the same position for all pointers or may be a different position. The timing for performing such processing can be, for example, a timing at which operation information other than movement (such as mouse click input) is received from the input device at regular time intervals, random time intervals, or the like. For example, if there is a “confirm” key on the screen for entering a password, it can be assumed that the pointer that finally comes over the confirm key is genuine, but by introducing a pointer position reset process, It is impossible to track across reset processes.

  In the above-described embodiment, the real mouse pointer and the dummy pointer are described as having the same appearance. However, the dummy pointer may be different in appearance from the real mouse pointer. For example, the shape of the dummy pointer may be changed, the color may be changed, or both of them may be changed. This distinction makes it possible for the user to easily track the real mouse pointer, while maintaining the effect that the third party does not know what the real mouse pointer is. When the appearance of the pointer is changed in this way, it is preferable to change the appearance of the real mouse pointer and the dummy pointer at an appropriate timing in order to prevent a third party from tracking. The change timing may be the same timing as the display position reset timing. The change in the appearance of the pointer may be adopted in combination with the change in the display position of the pointer, or may be adopted alone. In the case of adopting both processes, the timing for executing the respective change processes may be the same timing or different timings.

DESCRIPTION OF SYMBOLS 100 Input device 101 Input device 102 Operation acquisition part 103 Dummy operation production | generation part 104 Display control part 200 Display apparatus

Claims (7)

An information input device that has an input device and outputs a content of an operation acquired by the input device to a display device,
Display control means for generating a first display that is a screen display that moves in response to an operation acquired by the input device and outputting the first display to the display device;
The display control unit generates a second display that is a screen display that operates differently from the first display, and synthesizes the first display and the second display and outputs them to the display device. An information input device characterized by that. The display control means combines the first display and the second display so that the second display moves in synchronization with the first display, and outputs to the display device. The information input device according to claim 1, wherein the information input device is a feature. The input device is a pointing device;
The first display and the second display are moving pointers having the same appearance,
The information input device according to claim 2, wherein the display control unit generates the second display based on an operation performed by a user. Trajectory information storage means for storing a plurality of trajectories of the second display;
The information input device according to claim 3, wherein the display control unit generates the second display by using any one of a plurality of trajectories stored in the trajectory information storage unit. . 5. The information according to claim 1, wherein the display control unit generates a plurality of the second displays, synthesizes the first display, and outputs the combined display to the display device. Input device. A screen display method performed by an information input device that has an input device and outputs the content of an operation acquired by the input device to a display device,
Generating a first display that is a screen display that moves in response to an operation acquired by the input device;
Generating a second display that is a screen display that operates differently than the first display;
Combining the first display and the second display and outputting to the display device;
A screen display method comprising: In an information input device that has an input device and outputs the content of an operation acquired by the input device to a display device,
Generating a first display that is a screen display that moves in response to an operation acquired by the input device;
Generating a second display that is a screen display that operates differently than the first display;
Combining the first display and the second display and outputting to the display device;
An information input program characterized by causing

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