JP2007233806A - Security device for document - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a security device for a document, preventing that secret information written down in the document is easily read by others if falling into an emergency state such as a theft or a loss. <P>SOLUTION: This device for protecting secret of the document 50 put in a bag 70 has: a transmission/reception part 10; a sealed vessel 360 sealed with a foaming invisualization substance 40; a sealing release part 22 releasing the sealing of the foaming invisualization substance 40; and a control part 20 controlling the release of the sealing release part 22 by an instruction from the transmission/reception part 10. The device is put inside the bag 70 together with the document 50 including the secret information. When the transmission/reception part 10 receives an emergency state signal of occurrence of the emergency state, the sealing release part 22 operates, and the foaming invisualization substance 40 inside the sealed vessel is discharged, so that the document 50 including the secret information is covered with foam of the invisualization substance 40. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a document security device for protecting confidential information written on a document in which confidential information is written in the event of an emergency such as theft or loss.

  With the progress of the information society, information handled by humans may be in the form of digitized information so that it can be displayed on a display device such as a liquid crystal display or recorded on an electronic information recording medium using light or magnetism. It is increasing. In electronic information, in the unlikely event that an electronic information recording medium containing confidential information falls into an emergency such as theft or loss, various mechanisms that make it impossible for others to easily read the confidential information, for example, A personal authentication device using a password is used (see, for example, Patent Document 1).

  On the other hand, it is often used in a form in which necessary information is output on paper. Paper output information output on paper as a document rather than electronic information displayed on a display is generally easy for humans to read, not fatigued, can be read in a free posture, and view multiple images at the same time. It has the advantages of being able to take it and taking it anywhere as needed. Documents that output information on paper have the advantage of a high degree of freedom, but in the unlikely event of an emergency such as theft or loss, confidential information written on the document can be easily shared with others. It has the problem of being read.

JP 2004-178119 A

  Therefore, the technical problem to be solved by the present invention is that the confidentiality of the document that prevents the confidential information written on the document from being easily read by others in the event of an emergency such as theft or loss. It is to provide a protective device.

Means for solving the problems and their actions and effects

  In order to solve the above technical problem, the document security apparatus according to the present invention has the following features.

That is, the document security device according to the present invention is:
A transceiver unit;
A sealed container enclosing a foam-invisible material;
A seal release part for releasing the sealing of the foaming invisible substance;
A controller for controlling the release of the seal release unit according to a command from the transmission / reception unit,
Put the document security device in a bag with the document containing the confidential information,
When the transmission / reception unit receives an emergency signal that an emergency has occurred, the seal release unit is activated and the foaming invisible material in the sealed container is released, so that the document containing confidential information becomes invisible material. It is characterized by being covered with foam.

  According to the document security device configured as described above, in the unlikely event that a document containing confidential information is in an emergency such as theft or loss, the owner sends a signal indicating the occurrence of an emergency. The signal is received by the transmission / reception unit, and the control unit controls the operation of the seal release unit, and the sealing of the foamable invisible substance enclosed in the sealed container is released and released. The effervescent invisibility substance released from the container may be either released in the form of foam or foamed after being released in the form of a mist. A document containing confidential information in a bag with a security device is covered with a bubble of invisible material, and the entire document is made invisible. By making the entire document invisible, the portion where confidential information is written is also made invisible. Therefore, even in the event of an emergency such as theft or loss, confidential information written on a document can be prevented from being easily read by others. Here, the reason why the foam-like invisible substance is used is that the effect is exhibited in a small amount as compared with the case where it is used in a liquid state. Therefore, even if the device is placed in a bag, the size can be reduced so as not to interfere with carrying around.

  The invisible substance having foamability includes a black pigment or dye as a material for making the document black and invisible. Specific examples of black dyes include disazo dyes, metal-containing azo dyes, anthraquinone dyes, monoazo dyes, hydroxyketone dyes, sulfur dyes, and the like, and black pigments include ink made from soot such as pine smoke oil smoke. Carbon black, graphite, iron black, nickel sulfide, copper sulfide, silver sulfide, lead sulfide and the like are specifically exemplified. In addition, as an invisible substance having foaming properties, foam is produced by mixing a foaming agent, a foam stabilizer, or a catalyst with a main component of polyol or polyisocyanate, which is used in cushioning materials such as automobile seat sheets and mattresses. A flexible urethane foam that solidifies in a shape can also be used. Documents are adhered to each other by foamed soft urethane foam or the like, and confidential information in the documents cannot be read. Of course, it is needless to say that the black pigment or dye mentioned above is preferably contained in the flexible urethane foam or the like.

  The apparatus according to the present invention is used by placing it in a bag, and the container has a sealed structure so that the foaming invisible substance is not inadvertently released. The sealed container is of an aerosol type. Aerosol is a stock solution containing black pigment or dye, surfactant, water, etc., filled with liquefied gas as a propellant in a pressure-resistant container, black pigment or dye, gelling agent and surfactant. In this mixture, a gel agent in which a foaming agent such as isopentane is solubilized is filled in an inner bag of a double-structure pressure-resistant container, and a compressed gas is sealed between the inner bag and the outer can. In the aerosol type airtight container, when the seal release portion is operated, the foamable invisible substance is ejected from the ejection nozzle of the airtight container.

  Alternatively, the hermetic container is one in which a foamable invisibility substance composed of two liquids is arranged via a partition wall, and can be configured to flow out while the two liquids are mixed by breaking the partition wall. For example, the liquid A is a liquid containing sodium hydrogen carbonate as a main component and a foaming agent or the like is added. The liquid B is an aqueous solution of ammonium sulfate, and the black pigment or dye described above is included in at least one liquid. It is included. When the partition wall is destroyed by the operation of the seal release unit, the two liquids can chemically react to release bubbles containing the foaming invisible substance.

  Being stolen or lost means that it is unknown to the owner where the bag containing the document is now. In other words, it is assumed that the bag containing the document is in a distant place where communication with the transmission / reception unit cannot be made, or in a place where communication radio waves are difficult to reach even in the vicinity. Therefore, it is preferable that the transmission / reception unit is a mobile phone in which communication areas are stretched around like a mesh and easy to communicate.

  Usually, articles other than documents (for example, a wallet, a notebook, a periodic pocket, etc.) are put in the bag. In spite of an emergency, the release of the foam-invisible material also ruines other items than documents. The document and the security device are preferably enclosed together in a sealed bag so that the release of the foam-invisible substance has as little influence as possible.

  Because of the nature of the device, the security of important documents, the owner wants to know if the device has worked normally, so preferably the so-called immediately informs the owner that the device has worked correctly. Has an answer back function.

  The document security apparatus 1 according to the first embodiment of the present invention will be described below in detail with reference to FIGS.

  The document security protection device 1 described below is used for confidential information and confidential information that are not desired to be known to others and printed on paper or handwritten on paper.

  As shown in FIG. 1, the document security apparatus 1 includes a transmission / reception unit 10, a sealed container 30, a foamable invisibility material 40, a lock release unit 22, and a control unit 20.

  The transmission / reception unit 10 is for communicating with an external transmission means (for example, a fixed phone, a mobile phone, or a PHS phone) used by the owner via the antenna 12, and for example, a mobile phone is preferably used. That is, it is assumed that the bag 70 containing the document is in a remote place where communication with the transmission / reception unit 10 is not possible, or in a place where communication radio waves are difficult to reach even in the vicinity. Therefore, it is preferable that the transmission / reception unit 10 is a mobile phone that is easily communicated with a communication area that stretches around like a mesh. Of course, it is needless to say that other communication means such as a PHS receiver or a dedicated small receiver can be used.

  The hermetic container 30 includes a cylindrical body made of metal or resin (for example, a pencil size is suitable), a container body 32 composed of a bag body or a tube of a multilayer laminate, and an invisible material 40 having foamability. Is enclosed inside. An ejection nozzle 34 is provided at one end of the container body 32. The container 30 has a sealed structure so that the foamable invisible material 40 is not inadvertently released, and includes a lock member so that the foamable invisible material 40 is not inadvertently ejected from the ejection nozzle 34. . The sealed container 30 shown in FIGS. 1 and 2 is of an aerosol type. Aerosol is a stock solution containing black pigment or dye, surfactant, water, etc., filled with liquefied gas as a propellant in a pressure-resistant container, black pigment or dye, gelling agent and surfactant. In this mixture, a gel agent in which a foaming agent such as isopentane is solubilized is filled in an inner bag of a double-structure pressure-resistant container, and a compressed gas is sealed between the inner bag and the outer can. In the aerosol-type sealed container 30, the foamable invisible substance 40 is ejected from the ejection nozzle 34 of the sealed container 30 when the lock release unit 22 is activated.

  The lock release part 22 is for releasing the sealing of the foaming invisible material 40, and specifically, a lock member provided in the middle of the ejection nozzle 34 is moved by power of a small motor or the like. To unlock the lock member.

  The control unit 20 composed of a microcomputer operates the lock release unit 22 based on an unlock command (emergency signal that an emergency has occurred) received by the transmission / reception unit 10.

  The invisible material 40 having foamability is a material for making the document 50 black and invisible, and is a liquid or gel-like material containing a black pigment or dye. Specific examples of black dyes include disazo dyes, metal-containing azo dyes, anthraquinone dyes, monoazo dyes, hydroxyketone dyes, sulfur dyes, and the like, and black pigments include ink made from soot such as pine smoke oil smoke. Carbon black, graphite, iron black, nickel sulfide, copper sulfide, silver sulfide, lead sulfide and the like are specifically exemplified. In addition, by mixing the foaming agent, the foam stabilizer, and the catalyst with the main component of polyol or polyisocyanate, which is used for cushioning materials such as automobile seat sheets and mattresses, as the invisible substance 40 having foamability. A flexible urethane foam that solidifies in the form of foam can also be used. The documents 50 are bonded to each other by the foamed soft urethane foam or the like, and the confidential information in the documents 50 cannot be read. Of course, it is needless to say that the black pigment or dye mentioned above is preferably contained in the flexible urethane foam or the like.

  Next, a usage pattern of the document security apparatus 1 shown in FIG. 1 will be described with reference to FIG.

  The document security apparatus 1 is put in a bag 70 together with a document 50 containing confidential information. Usually, the bag 70 contains articles other than documents (for example, a wallet, a notebook, a regular folder, etc.). The document 50 and the security device 1 must be placed in the bag 70 sealed together in a sealed bag 60 so that the release of the foam-invisible material 40 has as little influence as possible. Is preferred.

  In the event of an emergency situation where the document 50 containing the confidential information has been stolen or lost, the owner is in an emergency that an emergency has occurred due to an external transmission means (for example, a fixed telephone, a mobile phone, or a PHS telephone). Issue a situation signal. When the transmission / reception unit 10 receives the emergency signal, the control unit 20 performs control such that the lock release unit 22 is released. When the unlocking portion 22 is released, the foamable invisible material 40 (for example, a black material) sealed in the sealed container 30 is discharged from the injection nozzle 34. The foamable invisibility material 40 is released in the form of bubbles or foams after being released in the form of a mist. The bubble of the invisible material 40 covers the document 50 containing confidential information, and the invisible material 40 penetrates into the document 50. As a result, the entire document 50 is made invisible (for example, becomes completely black). By making the entire document 50 invisible, the portion where the confidential information is written is also made invisible. Therefore, even in the event of an emergency such as theft or loss, confidential information written on the document 50 can be prevented from being easily read by others.

  Next, the document security apparatus 1 according to the second embodiment of the present invention will be described in detail with reference to FIGS.

  The document security protection device 1 has the same basic configuration as the device of the first embodiment described above, but the configuration of the sealed container 30 is different from that of the first embodiment.

  That is, as shown in FIG. 3, the sealed container 30 is configured such that a foamable invisibility material 40 composed of two liquids, liquid A and liquid B, is disposed via the partition wall 37. It is configured to flow out while the liquid is mixed. For example, the liquid A stored in the liquid A storage body 35 is a liquid mainly composed of sodium hydrogen carbonate and added with a foaming agent, and the liquid B stored in the liquid B storage body 36 is ammonium sulfate. The black pigment or dye mentioned above is contained in at least one of the aqueous solutions. When the partition 37 is destroyed by the operation of the seal release unit 25, the two liquids chemically react to release bubbles containing the foaming invisible substance 40.

  The partition breaking part 22 as the seal release part is for releasing the sealing of the foamable invisible substance 40 by breaking the partition 37. For example, when a needle-like body protruding with power from a small motor or the like pierces the partition wall 37, the two liquids that flow out by destroying the partition wall 37 separating the liquid A and the liquid B chemically react to make the foam invisible. The foam containing the substance 40 is released. Alternatively, the needle-like body can also be configured to pierce the partition wall 37 by driving a lock member that temporarily locks and fixes the needle-like body biased by the elastic member with power such as a small motor. .

  In the event of an emergency where the document 50 containing the confidential information has been stolen or lost, the owner is in an emergency situation where an emergency has occurred due to an external transmission means (for example, a fixed telephone, a mobile phone or a PHS telephone). Send a signal. As shown in FIG. 4, when the transmission / reception unit 10 receives the emergency signal, the control unit 20 performs control such that the partition wall destruction unit 25 destroys the partition wall 37. When the partition wall 37 is broken by the partition wall breaking section 25, the liquid A stored in the liquid A storage body 35 and the liquid B stored in the liquid B storage body 36 flow out while being mixed. The A liquid and B liquid that flowed out undergo a chemical reaction and foam. Bubbles of the invisible substance 40 (for example, a black substance) contained in at least one of the liquid A and the liquid B cover the document 50 including confidential information, and the invisible substance 40 penetrates into the document 50. As a result, the entire document 50 is made invisible (for example, becomes completely black). By making the entire document 50 invisible, the portion where the confidential information is written is also made invisible. Therefore, even in the event of an emergency such as theft or loss, confidential information written on the document 50 can be prevented from being easily read by others.

  The document security apparatus 1 according to the above-described embodiment may be equipped with a so-called answer back function that immediately notifies the owner that the apparatus has been normally operated. That is, a sensor (for example, a moisture sensor or a pressure sensor) for detecting that the seal release units 22 and 25 are activated or detecting that the bubbles of the invisible substance 40 are released is provided from the sensor. A bubble detection signal is issued. These signals are converted into an operation completion signal by the control unit 20, and then the invisible work completion information is transmitted from the transmission / reception unit 10, and the completion of the invisible work is indicated in various forms such as an email, a voice, a sound, and an icon. To inform the owner. As a result, the owner can obtain a sense of security that the device 1 has been operated normally and the document 50 has been made invisible.

It is a figure which shows the main structures of 1st embodiment of the document security protection apparatus which concerns on this invention. It is a figure which illustrates typically a mode that confidential information is erase | eliminated by the document security protection apparatus shown in FIG. It is a figure which shows the main structures of 2nd embodiment of the document security protection apparatus which concerns on this invention. It is a figure which illustrates typically a mode that confidential information is erase | eliminated by the document security protection apparatus shown in FIG.

Explanation of symbols

1 Document security device 5 Mobile phone (external transmission means)
DESCRIPTION OF SYMBOLS 10 Transmission / reception part 12 Antenna 20 Control part 22 Lock release part (sealing release part)
25 Bulkhead breaking part (sealing release part)
30 Sealed container 32 Container body 34 Jet nozzle 35 A liquid storage body 36 B liquid storage body 37 Partition 40 Foaming invisible substance 50 Document 60 containing confidential information Sealed bag 70 鞄

Claims (7)

A transceiver unit;
A sealed container enclosing a foam-invisible material;
A seal release part for releasing the sealing of the foaming invisible substance;
A controller for controlling the release of the seal release unit according to a command from the transmission / reception unit,
Put the device in a bag with documents containing confidential information,
When the transmission / reception unit receives an emergency signal that an emergency has occurred, the seal release unit is activated and the foaming invisible material in the sealed container is released, so that the document containing confidential information becomes invisible material. Document security device, characterized by being covered with foam.   2. The document security apparatus according to claim 1, wherein the foaming invisible material includes a black pigment or dye.   2. The document security apparatus according to claim 1, wherein the sealed container is of an aerosol type.   2. The document according to claim 1, wherein the airtight container is formed by arranging a foamable invisibility material composed of two liquids through a partition wall, and the two liquids flow out while being mixed due to the destruction of the partition wall. Security equipment.   2. The document security apparatus according to claim 1, wherein the transmission / reception unit uses a mobile phone.   The document security device of claim 1, wherein the document and security device are enclosed together in a sealed bag. 2. The document security apparatus according to claim 1, further comprising an answer back function.

Images