JP2006060685A - Portable information terminal, method and program for controlling the portable information terminal, and recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable information terminal, with which troubles generated by the invasion of privacy is avoided beforehand, by preliminarily disclosing that the portable information terminal has a function of monitoring that a key operation has been performed by a third party, after setting the monitoring mode equipped in the portable information terminal. <P>SOLUTION: The cellular phone 100 is constituted by providing a receiver 1 which generates receiving tone, a microphone 9 which transmits the generated tone, a transmitting part which modulates voice or e-mail data from the microphone 9 and transmits the modulated voice or e-mail data as electromagnetic waves from an antenna 22, a transmitting/receiving part 21 having a receiving part which demodulates the electromagnetic waves received from the antenna 22 and converts them into sound or character data, an input part (input means) 20 which receives input data of various buttons, a display part (display means) 15 which displays the current state and a message, etc., a control part 23 which manages control of each part and a read only memory (ROM) 24 which programs and stores the control procedures of the control part 23. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a portable information terminal, and more particularly to a method for controlling a portable information terminal capable of monitoring that the portable information terminal has been operated by a third party.

In recent years, there has been a remarkable spread of portable information terminals, in particular, mobile phones, and it has been spread at a high rate of more than one per household and about one per adult. This can be attributed to factors such as the expansion of the service area, the improvement in hardware performance of mobile phone devices, and the software factor seen in the improvement of operability. In particular, in recent years, the exchange of information by e-mail other than calls has increased, further promoting the expansion of communication. However, with the widespread use of mobile phones, there has been a problem that the security of information has been violated, which is an issue for the future.
Here, when ensuring the security of information, encryption of information is performed in order to prevent leakage of e-mail information to others. In addition, a lock function is added to the mobile phone in order to prevent information from being stolen by operating the personal mobile phone without permission. As described above, conventionally, in order to prevent leakage of personal information, it has been hard to prevent information from being viewed by a third party by means such as encryption or a lock function.

By the way, in close family relationships such as couples, parents and children, brothers, and close relationships such as business partners and colleagues, personal information that you do not want to be known to others, work information, etc. There is a lot of information), and when such information is recorded on a mobile phone, it is possible to prevent others from accessing the information by using the lock function, and to keep your secret The right not to be known to others is guaranteed by the Constitution.
However, on the other hand, the result of the owner who had never set the lock function on the mobile phone on a daily basis possessed information and contact information that should be kept confidential due to personal and work circumstances. If you suddenly start using the lock function when needed, family members and other nearby third parties may not have contacted the mobile phone owner with unwanted business partners, people, etc. It is easy to have suspicions and misunderstandings, such as whether you have begun to violate the law, or that you have information that you do not want to be known to others, and this will interfere with the human relationship you were familiar with It can also be a cause.
Also, as a result of leaving the mobile phone in a state where the user has forgotten to set the lock function, the recorded content is often read by others.
The present invention has been made in view of such a problem, and by displaying a warning that a function for monitoring the presence or absence of an operation by another person is set without using a confidential function such as a lock function, In addition to demonstrating preventive functions to prevent mobile phones from being operated on their own, it displays that other users are monitoring operations even if the mobile phone is left unattended after setting the lock function. When the other person operates it without permission, the fact that it is operated can be grasped by displaying that fact.
In other words, in the present invention, after setting the monitoring mode provided in the portable information terminal, it is disclosed in advance that it has a function of monitoring that a key operation has been performed by a third party. It is an object of the present invention to provide a portable information terminal capable of avoiding trouble that occurs.

In order to solve this problem, the present invention provides a portable information terminal including a display unit and an input unit, and the input unit of the portable information terminal is operated by a third party other than the operation right holder. Monitoring mode setting means for setting a monitoring mode for monitoring that, and input detection means for detecting that the input means has been operated after the monitoring mode has been set, and monitoring by the monitoring mode setting means After the mode is set, when the input detection unit detects that the input unit is operated, part or all of the display content of the display unit is changed.
A portable information terminal including a display unit and an input unit can selectively set a monitoring mode. Then, after setting the monitoring mode, when a third party operates the keys of the input means, the display content of a part or all of the display means is changed. As a result, the owner of the portable information terminal can confirm that the third party has operated the key by changing the display content.
Claim 2 is a portable information terminal provided with a display means and an input means, and monitoring for setting a monitoring mode for monitoring that the input means of the portable information terminal is operated by a third party other than the operation right holder Mode setting means, input detection means for detecting that the input means has been operated after the monitoring mode is set, and history information recording means for recording history information of the input means detected by the input detection means; When the input detection means detects that the input means has been operated after the monitoring mode is set by the monitoring mode setting means, part or all of the display content of the display means is changed. At the same time, the history information of the input means detected by the input detection means is recorded in the history information recording means.
The present invention further comprises history information recording means for recording history information input by the input means after setting the monitoring mode. Thereby, it is possible to confirm later how the third party has operated the keys together with the operation of the first aspect.

Claim 3 is a portable information terminal provided with a display means and an input means, and monitoring for setting a monitoring mode for monitoring that the input means of the portable information terminal is operated by a third party other than the operation right holder Mode setting means, and input detection means for detecting that the input means has been operated after the monitoring mode is set. When the monitoring mode is set by the monitoring mode setting means, the display means The monitoring mode is displayed, and when the input detection unit detects that the input unit is operated, part or all of the display content of the display unit is changed.
A portable information terminal including a display unit and an input unit can selectively set a monitoring mode. Then, when this monitoring mode is set, a predetermined content is displayed on the display unit so that the owner of the portable information terminal can know that the mode is being set. After setting the monitoring mode, when a third party operates the keys of the input means, the display content of a part or all of the display means is changed. As a result, the owner of the portable information terminal can confirm that the third party has operated the key by changing the display content.
Claim 4 is a portable information terminal provided with a display means and an input means, and monitoring for setting a monitoring mode for monitoring that the input means of the portable information terminal is operated by a third party other than the operation right holder Mode setting means, input detection means for detecting that the input means has been operated after the monitoring mode is set, and history information recording means for recording history information of the input means detected by the input detection means; When the monitoring mode is set by the monitoring mode setting means, the display means displays that the monitoring mode is in progress, and the input detecting means detects that the input means has been operated, A part or all of the display content of the display means is changed, and history information of the input means detected by the input detection means is recorded in the history information recording means. That.
The present invention further comprises history information recording means for recording history information inputted by the input means after setting the monitoring mode. Thereby, it is possible to confirm later how the third party has operated the key together with the operation of the third aspect.

According to a fifth aspect of the present invention, when a predetermined portion of the input means is operated, history information recorded in the history information recording means is displayed on the display means.
The history information cannot be viewed unless a predetermined key operation is performed. That is, the history information is displayed on the display means when the key of the input means is operated according to a predetermined procedure.
According to a sixth aspect of the present invention, when the input by the input means satisfies a predetermined condition, the monitoring mode is canceled.
Even if a third party knows that the monitoring mode is being set, the function of the present invention is effective unless the method for canceling the monitoring mode is known. Therefore, it is necessary to set the method for canceling the monitoring mode in a secret and a method that cannot be easily canceled. For example, it is canceled only when a combination of a plurality of keys or an operation order of the plurality of keys is operated accurately.
According to a seventh aspect of the present invention, the state change of the display content displayed on the display means is a deletion or addition of a part or all of the display content, or a change in display color.
When a third party operates a key during the monitoring mode to restore the original state, it is necessary to prevent the third party from easily seeing the change in the display content of the display unit. As an example, there are methods such as deleting a part of a character, changing a part of the color, or erasing one character.

Claim 8 is a method for controlling a portable information terminal comprising a display means and an input means, and monitoring for monitoring that the input means of the portable information terminal has been operated by a third party other than the operation right holder A monitoring mode setting step for setting a mode; and an input detection step for detecting that the input means has been operated after the monitoring mode is set, and after the monitoring mode is set by the monitoring mode setting step When the input detecting step detects that the input means has been operated, part or all of the display content of the display means is changed.
The eighth aspect has the same effect as that of the first aspect.
Claim 9 is a method for controlling a portable information terminal comprising a display means and an input means, and monitoring for monitoring that the input means of the portable information terminal has been operated by a third party other than the operation right holder A monitoring mode setting step for setting a mode, an input detection step for detecting that the input means is operated after the monitoring mode is set, and history information of the input means detected by the input detection step is recorded. A history information recording step, and when the input detection step detects that the input unit has been operated after the monitoring mode is set by the monitoring mode setting step, a part of the display content of the display unit Or changing the whole and recording the history information of the input means detected by the input detection step by the history information recording step. And butterflies.
The ninth aspect has the same effect as that of the second aspect.
Claim 10 is a method for controlling a portable information terminal comprising a display means and an input means, and monitoring for monitoring that the input means of the portable information terminal has been operated by a third party other than the operation right holder A monitoring mode setting step for setting a mode, and an input detection step for detecting that the input means has been operated after the monitoring mode is set, and when the monitoring mode is set by the monitoring mode setting step The display means displays that the monitoring mode is in effect, and when the input detection step detects that the input means has been operated, part or all of the display content of the display means is changed. And
The tenth aspect has the same effects as the third aspect.

Claim 11 is a method for controlling a portable information terminal including a display means and an input means, and monitoring for monitoring that the input means of the portable information terminal is operated by a third party other than the operation right holder A monitoring mode setting step for setting a mode, an input detection step for detecting that the input means is operated after the monitoring mode is set, and history information of the input means detected by the input detection step is recorded. A history information recording step, and when the monitoring mode is set by the monitoring mode setting step, the display means displays that it is in the monitoring mode, and the input detection step indicates that the input means has been operated. When the detection is detected, the display content of the display means is partially or entirely changed, and the input detection step is performed by the history information recording step. Wherein the recording history information of the input means is detected by.
The eleventh aspect has the same effect as that of the fourth aspect.
According to a twelfth aspect of the present invention, when a predetermined portion of the input unit is operated, the history information recorded by the history information recording step is displayed on the display unit.
The twelfth aspect has the same effects as the fifth aspect.
According to a thirteenth aspect of the present invention, when the input by the input unit satisfies a predetermined condition, the monitoring mode is canceled.
The thirteenth aspect has the same effect as that of the sixth aspect.
According to a fourteenth aspect of the present invention, the state change of the display content shown in the display means is that a part or all of the display content is deleted, added, or a display color is changed.
The fourteenth aspect has the same effects as the seventh aspect.
A fifteenth aspect is characterized in that the control method for the portable information terminal according to any one of the eighth to fourteenth aspects is programmed to be controlled by a computer.
A sixteenth aspect is characterized in that the portable information terminal control program according to the fifteenth aspect is recorded in a computer-readable format.

As described above, according to the inventions of claims 1 and 8, when the input detection unit detects that the input unit is operated by a third party after the monitoring mode is set by the owner of the portable information terminal, Since part or all of the display content of the display means is changed, it can be easily confirmed by a third party that the input means has been operated.
Further, in the second and ninth aspects, since the history information recording means for recording the history information inputted by the input means after the setting of the monitoring mode is further provided in the first aspect, the history operated by the third party during the monitoring mode is confirmed. can do.
Further, in claims 3 and 10, when the monitoring mode is set by the owner of the portable information terminal, it is displayed on the display means that the monitoring mode is being performed, and then the input means is operated by a third party. When the input detection means detects, a part or all of the display content of the display means is changed, so that it is possible for a third party to easily confirm that the input means has been operated.
Further, in the fourth and eleventh aspects, since the history information recording means for recording the history information inputted by the input means after the setting of the monitoring mode is further provided in the third aspect, the history operated by the third party during the monitoring mode is confirmed. can do.
Further, in claims 5 and 12, since the history information is displayed on the display means when a predetermined part of the input means is operated, it is possible to prevent the history information from being viewed or deleted without permission by a third party. it can.
Further, in the sixth and thirteenth aspects, since the monitoring mode is canceled when the input by the input means satisfies a predetermined condition, it is possible to prevent the monitoring mode from being canceled without permission by a third party.
Further, in claims 7 and 14, the display content for displaying that a third party has been operated on the display means deletes or adds part or all of the display content, or changes the display color. It is possible to prevent the display contents from being easily determined.
Further, in the fifteenth aspect, by programming the control method of the portable information terminal of the present invention in accordance with an OS that can be controlled by the computer, any computer equipped with the OS can be controlled by the same processing method.
According to the sixteenth aspect, by recording the control program for the portable information terminal on a recording medium in a computer-readable format, the program can be operated anywhere by carrying the recording medium.

Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings. However, the components, types, combinations, shapes, relative arrangements, and the like described in this embodiment are merely illustrative examples and not intended to limit the scope of the present invention only unless otherwise specified. .
FIG. 1 is a diagram showing an example of the appearance of a mobile phone. The cellular phone 100 is used when using a receiver 1 that emits a reception sound, a menu button 2 that calls a multi-menu, a multi-function button 3 that calls a function setting menu or a memory dial, and mail, a web station, or a camera. A special button 4, a start button 5 used when making or receiving a call, a character used when inputting characters, a lowercase button 6, and a dial button 7 used when inputting a phone number or characters Calls up the shortcut menu, the * button 8 used when inputting * and symbols, the microphone 9 transmitting the generated sound, the # button 10 used when inputting # and setting the manner mode, and the like. Shortcut button 11 to be used at times and used to erase the entered phone number and characters Clear button 12, power ON / OFF or power / end button 13 used to end the operation and return to the standby screen when the call is ended, and a schedule used when using mail or checking the schedule The button 14 and a display unit 15 that displays the current status and message are configured.

Next, general operations of the mobile phone 100 will be described separately for a case of a call and a case of an email. First, in the case of a general call, the telephone number pressed is displayed on the display unit 15 by pressing the dial button 7 of the other party's telephone number. The operator confirms the number and presses the start button 5 if it is correct. Thereby, the telephone number input from the mobile phone 100 is transmitted to call the other party. When the other party answers the phone, the line is connected and a call can be made. When the call ends, pressing the power / end button 13 disconnects the line and the call ends, and the display unit 15 returns to the standby screen.
Next, the case of mail transmission will be described. First, when the schedule button 14 is pressed, a function setting menu is displayed on the display unit 15, and the multi-function button 3 is operated to select a mail from the menu. Then, an address, a message, etc. are input by the dial button 7. When the input is completed, information is transmitted by pressing the special button 4.
Note that the above operation is merely an example, and it goes without saying that the operation method differs depending on the model.

FIG. 2 is a functional block diagram of the mobile phone (portable information terminal) 100 of the present invention. The same components will be described with the same reference numerals. The mobile phone 100 includes a receiver 1 that emits a received sound, a microphone 9 that transmits a generated sound, a transmission unit that modulates voice or mail data from the microphone 9 and transmits it as an electromagnetic wave from the antenna 22, and a reception from the antenna 22. 1 displays a current state, a message, and the like, a transmission / reception unit 21 having a reception unit for demodulating the converted electromagnetic wave and converting it into voice or character data, an input unit (input means) 20 for receiving input data of various buttons in FIG. A display unit (display unit) 15 for controlling the control unit 23, and a read-only memory (ROM) 24 for programming and storing a control procedure of the control unit 23.
Next, a first embodiment of the present invention will be described with reference to FIGS. FIG. 3 is a diagram illustrating an example of displaying from the standby screen that a third party has operated a button during the monitoring mode. FIG. 5 is an operation flowchart of the first embodiment of the present invention. First, the owner of the mobile phone 100 presses, for example, the * button 8 and the # button 10 in order to set the monitoring mode (YES route of S1). Then, the control unit 23 detects that the monitoring mode is set, and changes the display screen of the display unit 15 from the standby screen 32 of FIG. 3A to the underline 35, for example, under the date as shown in FIG. 3B. Is displayed (S2). This series of operations is performed by the monitoring mode setting means. In this state, the mobile phone 100 monitors whether the button to be monitored is pressed by the input detection means (S3). If not pressed (NO route in S3), the monitoring is continued until the monitoring mode is canceled. If, for example, a third party operates the multifunction button 3 to see the incoming call history in step S3, the input detection means detects this (YES route in S3), and the display screen of the display unit 15 is shown in FIG. As shown in (c), for example, a part 36a of “H” in “6/17 THU” 36 is deleted (S4). The operation for changing the display is performed when the third party finishes the operation and presses the power / end button 13 to change the screen of the display unit 15 to the standby screen of FIG. If the owner looks at the display screen and the screen is changed as shown in FIG. 3C, it can be recognized that the operation is performed by a third party. If the screen is not changed, no operation is performed. You can recognize that it is not. In any case, in order to cancel the monitoring mode, for example, the reverse operation (pressing the # button 10 and * button 8 in order) when the monitoring mode is set (YES route in S5) and the display unit 15 The display screen can be returned from the screen of FIG. 3B or 3C to the standby screen of FIG. 3A (S6). As a result, the normal mode is restored (S7). Unless the monitoring mode is set in step S1, the normal mode is always set (S7).

Thus, the mobile phone 100 including the display unit 15 and the input unit 20 can selectively set the monitoring mode. When the monitoring mode is set, predetermined contents (for example, an underline) are displayed on the display unit 15 so that the owner of the mobile phone 100 can understand that the mode is being set. After setting the monitoring mode, when a third party operates the keys of the input unit 20, the display content of a part of the display unit 15 is changed. Thereby, the owner of the mobile phone 100 can confirm that the third party has operated the key by changing the display content.
That is, when the monitoring mode is set by the owner of the mobile phone 100, the display unit 15 displays that the monitoring mode is in progress, and then the input detection means indicates that the input unit 20 has been operated by a third party. If detected, part or all of the display content of the display unit 15 is changed, so that it is possible for a third party to easily confirm that the input unit 20 has been operated.
Note that it is not always necessary to display on the display unit 15 that the monitoring mode is in effect, and the fact that the owner has entered the monitoring mode may be stored. For example, when the monitor mode is set, it may be notified by voice or display that the monitor mode is temporarily set.

Next, a second embodiment of the present invention will be described with reference to FIGS. FIG. 4 is a diagram showing an example of history information according to the present invention. FIG. 6 is an operation flowchart of the second embodiment of the present invention. First, the owner of the mobile phone 100 presses, for example, the * button 8 and the # button 10 in order to set the monitoring mode (YES route of S11). Then, the control unit 23 detects that the monitoring mode is set, and changes the display screen of the display unit 15 from the standby screen 32 of FIG. 3A to the underline 35, for example, under the date as shown in FIG. 3B. Is displayed (S12). This series of operations is performed by the monitoring mode setting means. In this state, the mobile phone 100 monitors whether the button to be monitored has been pressed by the input detection means (S13). If not pressed (NO route in S13), the monitoring is continued until the monitoring mode is canceled. If, for example, a third party operates the schedule button 14 to see the mail contents in step S13, the input detection means detects it (YES route in S13), and the display screen of the display unit 15 is shown in FIG. As shown in c), for example, a part 36a of “H” in “6/17 THU” 36 is deleted, and the history information is recorded in the history information recording means (S14). The operation for changing the display is performed when the third party finishes the operation and presses the power / end button 13 to change the screen of the display unit 15 to the standby screen of FIG. If the owner looks at the display screen and the screen is changed as shown in FIG. 3C, it can be recognized that the operation is performed by a third party. If the screen is not changed, no operation is performed. You can recognize that it is not. In any case, in order to cancel the monitoring mode, for example, the reverse operation when the monitoring mode is set (the # button 10 and the * button 8 are pressed in order) (YES route in S15) and the display unit 15 Can be returned from the screen of FIG. 3B or 3C to the standby screen of FIG. 3A (S16). If the owner looks at the display screen and the screen is changed as shown in FIG. 3C, it can be recognized that the operation has been performed by a third party. By sequentially pressing “1”, “2”, and “3”, the control unit 23 determines that the search key has been pressed (YES route of S17). Thereby, the history information recorded in the history information recording means is displayed on the display unit 15 as shown in FIG. 4A (details will be described later) (S18), and when the end button 13 is pressed (YES in S19). Route) to the normal mode (S20). If the monitoring mode is not set in step S11, the normal mode is always set (S20).
Thus, the history information cannot be viewed unless a predetermined button operation is performed. That is, the history information is displayed on the display unit 15 when the button of the input unit 20 is operated according to a predetermined procedure. Even if a third party knows that the monitoring mode is being set, the function of the present invention works effectively if the third party knows how to cancel the monitoring mode. Therefore, it is necessary to set the method for canceling the monitoring mode in a secret and a method that cannot be easily canceled. For example, it is canceled only when a combination of a plurality of buttons and an operation order of the plurality of buttons are operated accurately. Further, when the third party operates the button during the monitoring mode to return to the standby screen state, it is necessary to prevent the third party from easily seeing the change in the display content of the display unit 15. As an example, there are methods such as deleting a part of a character, changing a part of the color, or erasing one character.

FIG. 4 is a diagram showing an example of history information. FIG. 4A shows a display screen on the display unit 15, and FIG. 4B shows the detailed contents of the display screen. In this example, this is button operation history information for a third party to view the contents of the mail. For example, by sequentially pressing “1”, “2”, and “3” on the dial button 7, the control unit 23 determines that the search key has been pressed (YES route of S17). Thereby, the history information recorded in the history information recording means is displayed like the display screen 32. A title 40 for displaying history information is displayed at the top. Below that, button names are displayed in the order of operations. First, 1) the schedule button 14 was pressed to retrieve mail. 2) Next, the received mail is selected by pressing the MF (multifunction) button 3. 3) Next, the MF button 3 is pressed in the same manner to select a general folder. 4) Next, the MF button 3 was pressed in the same manner to select a mail sender (Mr. ABC). 5) Next, the MF button 3 was pressed in the same manner to display the mail contents. 6) Next, the scroll button was pressed to scroll the contents. 7) Finally, the power / end button 13 was pressed to return to the standby screen. Can be confirmed.
Thus, by further including history information recording means for recording history information input by the input unit 20 after setting the monitoring mode, it is possible to check the history operated by the third party during the monitoring mode. Further, since the history information is displayed on the display unit 15 when a predetermined portion of the input unit 20 is operated, it is possible to prevent the history information from being viewed or deleted without permission by a third party. Moreover, since cancellation | release of monitoring mode is cancelled | released when the input by the input part 20 satisfy | fills a predetermined condition, it can prevent canceling | releaseting without permission by a third party. In addition, since the display content that displays that a third party has been operated on the display unit 15 is deleted, added, or the display color of a part or all of the display content is changed, the display content can be easily displayed to a third party. It is possible to prevent the change from being judged.
As described above, the case of a mobile phone has been described as an example. However, the present invention is not limited to this as long as it is a configuration information terminal including a display unit and an input unit.

It is a figure which shows an example of the external appearance of a mobile telephone. It is a functional block diagram of the mobile phone (personal digital assistant) 100 of the present invention. It is a figure which shows an example which displays that the third party operated the button in the monitoring mode from the standby screen. It is a figure which shows an example of the historical information of this invention. It is an operation | movement flowchart of the 1st Embodiment of this invention. It is an operation | movement flowchart of the 2nd Embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Receiver, 9 Microphone, 15 Display part (display means), 20 Input part (input means), 22 Antenna, 21 Transmission / reception part, 23 Control part, 24 Read-only memory (ROM), 100 Mobile phone

Claims (16)

A portable information terminal comprising a display means and an input means, wherein a monitoring mode setting means for setting a monitoring mode for monitoring that the input means of the portable information terminal is operated by a third party other than the operation right person; Input detection means for detecting that the input means is operated after the monitoring mode is set, and
After the monitoring mode is set by the monitoring mode setting means, when the input detection means detects that the input means has been operated, part or all of the display content of the display means is changed. Mobile information terminal. A portable information terminal comprising a display means and an input means, wherein a monitoring mode setting means for setting a monitoring mode for monitoring that the input means of the portable information terminal is operated by a third party other than the operation right person; An input detection means for detecting that the input means has been operated after the monitoring mode is set; and a history information recording means for recording history information of the input means detected by the input detection means,
After the monitoring mode is set by the monitoring mode setting means, when the input detecting means detects that the input means has been operated, a part or all of the display content of the display means is changed, and the history A portable information terminal characterized in that history information of an input means detected by the input detection means is recorded in an information recording means. A portable information terminal comprising a display means and an input means, wherein a monitoring mode setting means for setting a monitoring mode for monitoring that the input means of the portable information terminal is operated by a third party other than the operation right person; Input detection means for detecting that the input means is operated after the monitoring mode is set, and
When the monitoring mode is set by the monitoring mode setting means, the display means displays that it is in the monitoring mode, and when the input detecting means detects that the input means has been operated, A portable information terminal characterized in that part or all of the display content is changed. A portable information terminal comprising a display means and an input means, wherein a monitoring mode setting means for setting a monitoring mode for monitoring that the input means of the portable information terminal is operated by a third party other than the operation right person; An input detection means for detecting that the input means has been operated after the monitoring mode is set; and a history information recording means for recording history information of the input means detected by the input detection means,
When the monitoring mode is set by the monitoring mode setting means, the display means displays that it is in the monitoring mode, and when the input detecting means detects that the input means has been operated, A portable information terminal characterized by changing part or all of the display contents and recording history information of the input means detected by the input detection means in the history information recording means.   5. The portable information terminal according to claim 2, wherein when a predetermined part of the input unit is operated, history information recorded in the history information recording unit is displayed on the display unit.   The portable information terminal according to any one of claims 1 to 5, wherein the monitoring mode is canceled when an input by the input unit satisfies a predetermined condition.   The mobile phone according to any one of claims 1 to 6, wherein the state change of the display content displayed on the display means is a deletion or addition of a part or all of the display content, or a change in display color. Information terminal. A method for controlling a portable information terminal comprising a display means and an input means, wherein a monitoring mode is set for monitoring that the input means of the portable information terminal is operated by a third party other than the operation right holder. A mode setting step, and an input detection step for detecting that the input means is operated after the monitoring mode is set,
After the monitoring mode is set by the monitoring mode setting step, when the input detecting step detects that the input unit has been operated, part or all of the display content of the display unit is changed. To control a portable information terminal. A method for controlling a portable information terminal comprising a display means and an input means, wherein a monitoring mode is set for monitoring that the input means of the portable information terminal is operated by a third party other than the operation right holder. A mode setting step, an input detection step for detecting that the input means is operated after the monitoring mode is set, and a history information recording step for recording history information of the input means detected by the input detection step; With
After the monitoring mode is set by the monitoring mode setting step, when the input detecting step detects that the input unit has been operated, a part or all of the display content of the display unit is changed, and the history A method for controlling a portable information terminal, wherein history information of an input means detected by the input detection step is recorded by an information recording step. A method for controlling a portable information terminal comprising a display means and an input means, wherein a monitoring mode is set for monitoring that the input means of the portable information terminal is operated by a third party other than the operation right holder. A mode setting step, and an input detection step for detecting that the input means is operated after the monitoring mode is set,
When the monitoring mode is set by the monitoring mode setting step, the display means displays that the monitoring mode is being performed, and when the input detecting step detects that the input means has been operated, A method for controlling a portable information terminal, characterized in that part or all of display content is changed. A method for controlling a portable information terminal comprising a display means and an input means, wherein a monitoring mode is set for monitoring that the input means of the portable information terminal is operated by a third party other than the operation right holder. A mode setting step, an input detection step for detecting that the input means is operated after the monitoring mode is set, and a history information recording step for recording history information of the input means detected by the input detection step; With
When the monitoring mode is set by the monitoring mode setting step, the display means displays that the monitoring mode is being performed, and when the input detecting step detects that the input means has been operated, A method for controlling a portable information terminal, wherein a part or all of display contents are changed, and history information of the input means detected by the input detection step is recorded by the history information recording step.   The method for controlling a portable information terminal according to claim 9 or 11, wherein when a predetermined portion of the input means is operated, history information recorded by the history information recording step is displayed on the display means.   The method for controlling a portable information terminal according to any one of claims 8 to 12, wherein the monitoring mode is canceled when an input by the input unit satisfies a predetermined condition.   The state change of the display content displayed on the display means is a part or all of the display content is deleted, added, or a display color is changed. Control method for portable information terminals.   15. A control program for a portable information terminal, wherein the portable information terminal control method according to claim 8 is programmed to be controlled by a computer.   A recording medium in which the control program for a portable information terminal according to claim 15 is recorded in a computer-readable format.

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