JP2003346267A - Theft deterring, preventing and predicting method, and carpet-type theft deterring, preventing and predicting device combined with gate motion-image recognizing technology - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a theft deterring, preventing and predicting method having a theft preventing function and a theft predicting function of high accuracy, and flexibly coping with a width and the shape of a passage. <P>SOLUTION: The carpet-type gate device 1 includes an exciting coil and a sensor coil in a carpet-shaped coil capable of being closely kept into contact with a floor surface, and accommodates a power source for supplying the excited current and an electronic circuit for precessing an electric signal acquired by the sensor coil in a gate door-shaped box mounted on a side face, and is a means for exposing the magnetic field generated by the excitation coil to a magnetic marker attached to a commodity, sensing the magnetizing state of the magnetic marker by a search coil, and detecting whether the commodity carried by an objective person is a stolen object or not. The gate door- shaped box demonstrates the installation of the theft prevention device to deter the dishonest acquirement of the commodity. <P>COPYRIGHT: (C)2004,JPO

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to deterrence, prevention, and prediction of theft associated with the sale or rental of goods, by developing a carpet-type theft suppression / prevention device, and by further using a moving image recognition technology. It also relates to theft prediction technology.

[0002]

2. Description of the Related Art In this specification, an anti-theft device is a device in which a ferromagnetic material is an outer cylinder with a window, and a magnetic material having a soft magnetic material shaft whose surface is exposed from the window is attached to a product as a magnetic tag. When the magnetic tag is magnetized by the magnetic field generated by the excitation coil in the anti-theft gate, the strongest Barkhausen noise generated in the magnetization process of the internal soft magnetic material axis is generated when the outer ferromagnetic material is not magnetized. When the sensor coil is detected as a high-frequency magnetization signal to the outside and the ferromagnetic material, which is the outer cylinder of the tag, is magnetized, the inner soft magnetic material axis is magnetized by the ferromagnetic material of the outer cylinder. Based on the principle that the Barkhausen noise is weak, the high-frequency magnetization signal is also weakened, and the magnetic tag is not detected in the sensor coil,
An excitation coil and a sensor coil are arranged in one gate panel, and the device is composed of two gate panels.

In a conventional anti-theft device composed of two gate panels, the magnetic field generated by the excitation coil inside the gate panel rapidly attenuates when separated from the panel, and the magnetic tag cannot be magnetized. The distance between two gate panels is limited.

In such a conventional anti-theft gate system, the distance between the gate panel and the product equipped with the magnetic tag is not constant because the product carrier can pass an arbitrary position between the gate panels, and the The detection sensitivity for anti-theft varies.

Further, the conventional anti-theft gate system is:
In order to increase the gate interval and to improve absolute sensitivity, it is inevitable that the gate panel becomes large and the exciting current increases. This is a problem that the anti-theft device consumes a large amount of power and is unacceptable from the viewpoint of energy saving.

When the magnetic field between the conventional gate panels is strengthened, the sensitivity is improved and the distance between the gate panels is increased, but at the same time, the effect of suction and heat generation on metal fittings such as a belt worn by a product purchaser, and furthermore, the product purchaser There is a risk of destroying information in a magnetic recording medium such as a floppy disk or mini disk carried by the user.

[0007]

It is known from Helmholtz coils that the reach of a magnetic field generated when a current is applied to a planarly arranged loop coil is almost proportional to the diameter of the loop coil. I have. Therefore, in the conventional gate panel system, the size of the gate panel including the loop-shaped exciting coil is inevitably increased in size.

On the other hand, the average human height is 2 m at most.
Therefore, the position of the product carried by the product carrier when passing through the anti-theft gate is necessarily 1 m or less from the floor. Further, the clear display of the installation of the anti-theft device gives psychological suppression to a purchaser of the product to illegally obtain the product.

[0009] People who illegally acquire commodities often have habits of illegal acquisition. If it is possible to predict such a person who has habits of illegally acquiring goods by using some method and device, it is possible to not only strengthen the anti-theft function of the goods but also correct one who has the habit of illegally acquiring goods. Leads to the way.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and has as its object to provide a method of preventing theft of a product, enhancing the theft sensing function, and realizing a prediction of theft of the product by recognizing a moving image. .

Further, the present invention provides a method for preventing or preventing theft.
It is another object of the present invention to provide an anti-theft technology that can effectively prevent theft by using a prediction method and that can be expected to rehabilitate a person who has a habit of illegally acquiring a product.

[0012]

In order to achieve the above object, a method for deterring, preventing, and predicting theft according to the present invention is not limited in the size and shape of the loop-shaped excitation coil and the sensor coil, and is mounted on a product. We propose a carpet-type gate that can be installed on the floor with stable detection sensitivity, with the distance between the magnetic tag and the gate staying within a certain range, and strengthen the anti-theft function. In addition, by demonstrating the existence of an anti-theft gate, the effect of deterring theft is provided. In addition, a function for predicting theft of a product is provided by using a moving image of a product purchase applicant who passes through a gate by using a moving image recognition.

First, the carpet-type anti-theft gate will be described more specifically. It is desirable for the anti-theft gate to secure a wide passage width so that a larger product can be carried. To overcome this problem, a carpet-type gate panel that enables the size and shape according to the width of the passage is ideal.

Further, it is desirable from the viewpoint of the theft detection function that the distance between the carpet-type gate panel containing the loop-shaped excitation coil and the sensor coil and the magnetic tag attached to the product is equal to or less than a certain value. Taking into account the average human height, the carpet-type gate panel enhances the theft detection function by keeping the distance between the magnetic tag-equipped product and the gate within a certain range.

Since the anti-theft gate panel for detecting the presence of a magnetic tag is composed of an exciting coil for generating a magnetic field and a sensor coil, a power source for supplying an exciting current and a high-frequency magnetic field signal generated by the magnetic tag are inevitable. An electronic circuit for processing is required. As a place for storing these, a storage box of an arbitrary shape that indicates the existence of the gate is provided at both ends of the carpet-type gate to provide a theft deterrent effect. Needless to say, when used in combination with the conventional gate panel system, the theft prevention / prevention function is further enhanced.

Further, when the price for the product is paid, the function of the magnetic tag is reduced by magnetizing the magnetic tag, thereby indicating that the portable product has been properly purchased.

Next, the theft prediction based on moving image recognition will be specifically described. In order to predict the theft without giving any discomfort to the product purchaser, it is necessary to acquire a moving image of the product purchaser when passing through the carpet type gate panel. For this reason, a moving image of a product purchaser passing through a carpet-type gate panel is singly or singularly or more than one image acquisition device, for example, a plurality of CCDs (Charge Coupled Device)
e) Install a camera and acquire under a certain lighting environment. The fixed lighting environment is for acquiring a moving image under the same environment and improving the theft prediction function.

The principle of moving image recognition is that, in a plurality of frames constituting moving image data, the appearance frequency distribution of each information value is extracted from the pixel information values as a universal amount of the moving image, and the extracted universal amount and There is a match between each universal quantity in a pre-built database.

In particular, if the appearance frequency of the light intensity values of the pixels constituting each frame of the moving image is Fourier-transformed in the frame moving direction, and a Fourier frequency spectrum or the like from which the frame moving information phase is deleted is used, the purchaser of the product purchaser can be obtained. A unique operating frequency distribution is obtained as a Fourier frequency spectrum. The Fourier spectrum may be a universal quantity unique to a product purchaser. It is needless to say that the uniqueness of the universal amount is improved by acquiring a moving image by using a plurality of video acquisition devices, for example, the CCD camera, and extracting the universal amount unique to the product purchaser.

On the other hand, in the theft prediction based on the moving image recognition according to the present invention, the universal amount of the moving image of the stolen article is extracted in advance to construct a theft candidate database, and the universal amount unique to the purchaser of the product is determined. Theft is foreseen by assessing the match between individual universal quantities in the theft candidate database.

Therefore, in the theft prediction based on the moving image recognition according to the present invention, since the theft candidate database is premised, it is necessary to initialize the theft candidate database by some method, and the moving image which cannot be obtained by ordinary creatures. If the universal amount extracted from the above, for example, the Fourier spectrum or the like, is used as the universal amount of the moving image, the Fourier spectrum of a unit pulse including all frequencies uniformly may be used as the initial universal amount of the theft candidate database.

In the theft prediction based on moving image recognition according to the present invention, a plurality of stolen article carriers are individually predicted.
When the commodity carrier obtains a moving image passing through the carpet-type gate and theft of the commodity is detected, a universal amount unique to the stolen article carrier is extracted from the moving image by the method described above, and the theft candidate is extracted. Add to the database or, if you are an addict, update the universal quantity in the database.

The theft / suppression / prevention / prediction method according to the present invention includes a first step of attaching a magnetic tag to each product in advance, and inputting dummy data to a theft candidate database in advance, and In the second step of initializing, the third step of demonstrating that the anti-theft gate is installed in advance and deterring the theft, and in the third step, assuming the presence of a carpet-type anti-theft gate, A fourth step of acquiring a moving image of a purchaser entering the gate, a fifth step of extracting a universal amount of the moving image acquired in the fourth step, and an acquisition in the fifth step. The sixth step of comparing the universal amount of the obtained moving image with the universal amount in the theft candidate database and predicting the theft, and changing the magnetization state of the magnetic tag previously attached in the first step, Record that goods have been paid for A step of detecting whether or not the portable item is stolen by using a carpet-type gate composed of an excitation coil and a magnetic sensor coil disposed on a floor surface; In the process of 8, a ninth process in which the product carrier acquires a moving image of the product carrier while passing through the carpet type gate, and in the case where theft of the product is detected in the eighth process, notification of the theft; A tenth step of extracting the universal amount of the moving image acquired in the ninth step, and an eleventh step of comparing the universal amount acquired in the tenth step with the universal amount in the theft candidate database. And a twelfth step of updating the stolen candidate data in the stolen candidate database if the stolen product carrier determines from the eleventh step that the universal amount exists in the stolen candidate database. From the eleventh step If theft products wearer is determined not to exist in the theft candidate database, and a thirteenth step of adding the moving image and the universal amount of the stolen goods wearer to theft candidate database.

The theft / suppression / prevention / prediction device according to the present invention comprises a first magnetic tag means as a marker to be attached to the product, a second carpet-type gate panel means for preventing theft, and a deterrent to theft. Third anti-theft means by clearly showing the anti-theft gate, fourth magnetic means for magnetizing the magnetic tag to indicate that a proper price has been paid for the product, and passing through the second carpet gate Fifth product purchaser moving image acquisition means for obtaining a moving image of a desired product purchaser, and sixth product purchaser universal amount extraction means for extracting a universal amount of the moving image from the moving image. Seventh storage means for storing a moving image, the universal quantity and the theft candidate database, and an eighth product purchase applicant for comparing the universal quantity of the product purchase applicant with each universal quantity in the theft candidate database. Verification means and predict theft Ninth theft prediction means, a tenth stolen commodity carrier moving image acquisition means for acquiring the stolen commodity carrier moving image sensed by the second gate means, and a universal amount of the stolen commodity carrier moving image. Means for extracting a universal amount of the stolen commodity carrier moving image to be extracted, and an eleventh stolen commodity carrier moving image for collating between the universal amount of the stolen commodity carrier moving image and each universal amount in the theft candidate database Twelfth to update the universal quantity matching means and the theft candidate database
And the thirteenth candidate database updating means for adding the universal amount of the stolen commodity carrier moving image to the theft candidate database.

[0025]

Embodiments of the present invention will be described below with reference to the drawings. The present embodiment is an example in which a purchase applicant examines a product to which a magnetic tag is attached in advance, and then attempts to determine whether or not the product has been properly purchased. In general,
It is known that the sale of goods is promoted if the goods can be examined directly by human hands. In addition, there is no need to monitor products or store them in showcases.

First, the purchaser of the product recognizes the existence of the anti-theft gate, and the purchaser of the product is prevented from illegally acquiring the product. Next, when the product purchaser passes through the gate, a moving image of the product purchaser is acquired, and then the universal amount of the image is extracted and collated with each universal amount in the theft candidate database. Theft is foreseen. After the purchaser examines the product, the function of the magnetic tag is reduced by magnetizing the magnetic tag when payment for the product is paid. When the product carrier passes through the gate, a moving image of the product carrier is acquired. If the magnetic tag is not magnetized, the anti-theft function of the gate detects the theft when the product carrier passes through the gate. If the theft of the product is detected, a universal amount is extracted from the moving image of the product carrier, and is compared with each universal amount in the theft candidate database. If the user is a stolen addict, the moving image in the theft candidate database and the universal amount of the moving image are updated to the latest moving image and the universal amount of the moving image. If the trainee is an emergency trainee, the moving image and the universal amount of the moving image are added to the theft candidate database and updated.

<Structure> FIG. 1 is a diagram showing the structure of a theft deterrent / prevention / prediction device according to an embodiment of the present invention. The anti-theft device includes a carpet-type gate device 1, a moving image capturing device 2, a moving image capturing operating device 3, a moving image capturing stopping device 4, and an electronic device, as shown in FIG. It is composed of a computer 5, a storage device 6, and a magnetic tag magnetizing device 7, and handles a product purchase behavior of a target person TP given as a processing target.

The carpet-type gate device 1 incorporates an excitation coil and a sensor coil in a carpet-like panel that can be in close contact with the floor,
A power supply for supplying an exciting current and an electronic circuit for processing an electric signal obtained by a sensor coil are housed in a gate-shaped box BO arranged on the side, and the exciting coil is generated on a magnetic marker attached to a product. This is a means for exposing a magnetic field to be detected, detecting the magnetized state of the magnetic marker with a search coil, and detecting whether or not the product carried by the target person TP is a stolen product. The gate-shaped box BO indicates the installation of an anti-theft device and suppresses illegal acquisition of a product.

The moving image capturing device 2 is provided at an appropriate position where a moving image of the target person TP passing through the gate can be clearly obtained under a constant illumination LS environment, and is a moving image obtaining means of the target person TP. The illumination LS enables a moving image of the target person TP to be always obtained under a constant shooting condition.

The moving image capturing operation devices 3 are installed at both ends of the carpet type gate device 1, and detect the target person TP and instruct the moving image capturing device 2 to start capturing the moving image. Means.

The moving image capturing stop devices 4 are installed at both ends of the carpet type gate device 1 and stop the moving image acquisition of the target person TP by detecting the target person TP and instructing the moving image capturing device 2 to stop the moving image capturing. Means.

The electronic computer 5 performs a universal quantity extraction operation and a comparison between universal quantities from the moving image of the target person TP acquired from the moving image capturing device 1, whether or not the target person TP is addictive, and a notification of product theft. And the like according to a predetermined program.

The storage device 6 temporarily stores the moving image of the target person TP obtained from the moving image capturing device 1 and the universal amount of the target person TP extracted by the computer 5, Data storage means for storing a database.

When the target person TP pays for the product, the magnetic tag magnetizing device 7 magnetizes the magnetic tag attached to the product, and the high frequency magnetic field generated by the magnetic tag in the gate due to the Barkhausen effect. This is a magnetic tag magnetizing means for reducing the number.

<Operation> (1) Initialization of the Theft Candidate Database Next, the operation of the theft deterrent / prevention / prediction device having the above configuration will be described. This theft deterrence, prevention and prediction device
In order to predict the theft, a theft candidate database initialization process for registering the dummy data and the universal amount of the data in the storage device 6 described above is required when the theft deterrence / prevention / prediction device is installed. As dummy data, a moving image that is impossible with ordinary organisms and its universal amount, for example, when the Fourier spectrum is a universal amount of the moving image, the unit pulse including all frequencies uniformly and the Fourier spectrum of the pulse are stolen candidate databases. May be used as the initial database.

(2) Theft suppression is performed by the person TP to be deterred from seeing a gate-shaped box BO located on the side of the antitheft deterrence / prevention / prediction device in which the power supply / electronic circuit is stored. The effect is exhibited.

(3) When a person TP to be predicted of theft starts to enter a carpet-shaped panel having a built-in excitation coil and a sensor coil of the theft deterrence / prevention / prediction device, a moving image using an infrared sensor or the like, for example. With the capturing operation device 3, the moving image capturing device 1 starts capturing a moving image of the target person TP under a constant illumination LS environment. Next, when the target person TP has passed through the carpet-shaped panel, the moving image capturing / stopping device 4 operates, and the moving image acquisition of the target person TP ends. Subsequently, the moving image is input to the computer 5, and a universal amount of the moving image is extracted. The universal amount of the extracted target person TP is stored in the storage device 6
The computer 5 displays the consistency between the universal amount of the target person TP and the individual universal amounts in the theft candidate database, and compares the universal amount of the target person TP with the individual universal amounts stored in the theft candidate database. Foresight is made.

(4) The person to be protected from the theft TP carries the product with the magnetic tag attached thereto without paying a legitimate price, and incorporates the excitation coil and the sensor coil of the theft prevention / prevention / foreseeing device. The carpet-shaped panel, the magnetic tag is magnetized by the magnetic field generated by the excitation coil, and the Barkhausen high-frequency magnetic field accompanying the magnetization is detected by the sensor coil, thereby preventing theft of the product . When the target person TP has paid a legitimate price for a product to which the magnetic tag is attached, the magnetic tag is magnetized by the magnetic tag magnetizing device 7. as a result,
Even if the target person TP carries the goods and passes through the carpet-like panel with the built-in excitation coil and sensor coil of the theft deterrence / prevention / prediction device, the high frequency generated by the magnetic tag in the gate due to the Barkhausen effect The anti-theft device does not work because the magnetic field is reduced.

(5) Updating the Theft Candidate Database and Not Upgrading / Prevention / Prediction Device Carrying the Goods with the Magnetic Tag Attached by the Target Person TP to Carry the Goods Without Paying the Correct Price Then, theft of the product is prevented as described above. In this case, the moving image of the target person TP and the universal amount of the moving image acquired in the same manner as in the case of the theft prediction described above are extracted, and the universal amount is stored in the individual theft candidate database stored in the storage device 6. Are collated between universal quantities of
As a result, when the universal amount of the target person TP is highly consistent with the universal amount in the theft candidate database, the moving image data and the universal amount in the database are replaced with the moving image and the universal amount, The database is updated. If the universal amount of the target person TP has low consistency with the universal amount in the theft candidate database, the moving image and the universal amount are added to the theft candidate database, and the theft candidate database is updated.

<Experimental Example> An experimental example confirming the operation of the present theft deterrence / prevention / prediction device will be described below. In the following experimental example, in the demagnetized state where the magnetic tag is not magnetized, the magnetized state, the state where the magnetic tag does not exist, and the iron nail as a magnetic material instead of the magnetic tag in the magnetic field generated by the excitation coil When inserted, the sensor output waveform for each was measured. Further, as the target person TP of the moving image,
An experiment was performed using four types of monochrome animation images. The animation image is for assuming a moving image captured under an ideal environment.

As shown in FIG. 2, the magnetic tag in the non-magnetized state generates a pulse at the peak of the sensor induced voltage, and the magnetic tag in the non-magnetized state It can be confirmed that a magnetic field is generated. The magnetized magnetic tag has a waveform similar to that of a normal iron (nail), but has a smaller volume than a nail, so the maximum amplitude of the induced voltage is small. Therefore, theft deterrence
The functions of the magnetic tag and the magnetizing device can be confirmed with the prevention and prediction device.

FIG. 3 is a diagram showing a theft prediction experiment using a monochrome animation image with a background in which different vehicles move in different directions as a moving image of the target person TP. In this figure, the upper part is one frame image of a monochrome database moving image with a background in which different objects are moving in different directions. The middle row is a one-frame image of a monochrome test animation with a background in which the target image moves in different directions. The lower part shows the collation result when the Fourier frequency spectrum for the frame moving direction is used as a universal amount. In the case where the target person TP in the background-added monochrome moving image moves in a different direction, the two universal amount matching methods for moving images are applied. <Examples of Modification, Application, etc.> Although the embodiment of the present invention has been described above, the embodiment of the present invention is not limited to the above-described embodiment. Hereinafter, other modifications or applications will be described with examples.

FIG. 4 shows an example in which a conventional gate type is used together. As shown in FIG. 1A, in the conventional gate panel type, the magnetic field of the exciting coil becomes weaker as the distance from the gate panel increases, and the anti-theft effect of the magnetic tag decreases. Same figure
In (a), x, y, and z are the magnetic tags x, y, and z, respectively.
The shading means the result of confirming the reproducibility of the experiment. White indicates perfect reproducibility of the operation, light gray indicates operation twice out of three times, dark gray indicates operation of three times. It operates one time, and black indicates a part that does not operate.
On the other hand, in the carpet-type panel system shown in FIG. 3A that incorporates an excitation coil and a sensor coil, the distance between the excitation coil, the sensor coil, and the magnetic tag falls within a certain range, so that the effect of the magnetic tag falls within a certain range. As a result, stable anti-theft sensitivity can be expected. Further, FIG. 2C shows a system in which the systems shown in FIGS. 1A and 1B are used together. Obviously, this is one method of avoiding a decrease in the anti-theft sensitivity of the gate panel type shown in FIG.

[0044]

As described above, according to the present invention, a carpet-type gate panel incorporating a magnetic tag, an exciting coil, and a sensor coil to be mounted on a product, an impressive gate, and a magnetizing device for magnetizing the magnetic tag. , A moving image acquisition device that acquires a moving image of a product purchaser who passes through a carpet-type gate, a computer that performs a universal amount extraction operation and a collation operation of the moving image from the moving image, and a storage device that stores a stolen candidate database The present invention makes it possible to provide a device having a theft deterrence / prevention / prediction function by using a device.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a configuration of a theft deterrent / prevention / prediction device according to an embodiment of the present invention.

FIG. 2 is a diagram showing response characteristics of a magnetic tag used in the theft prevention / prevention / prediction device.

FIG. 3 is a diagram showing an example of an experiment in which a moving image recognition example serving as a backbone of theft prediction and theft candidate data is performed using a monochrome animated image with a background in the theft prevention / prevention / prediction apparatus.

FIG. 4 shows a measurement example of a response characteristic of a magnetic tag with respect to a distance from a gate panel, a new type carpet type gate panel, and an anti-theft gate using a conventional gate panel and a carpet type gate panel in a conventional gate panel type. It is a figure showing a concept.

[Explanation of symbols]

1 Carpet type gate panel device 2 Moving image capture device 3 Moving image capture actuator 4 Moving image capture stop device 5 Computer 6 Storage device 7 Magnetic tag magnetizing device TP target person LS lighting BO Gate-shaped box

Continuation of front page    F term (reference) 5C084 AA03 AA09 BB31 CC34 DD11                       DD21 EE01 EE07 GG78 HH12                 5C087 AA02 AA03 AA05 AA32 AA42                       DD05 DD20 EE14 GG02 GG14                       GG66

Claims (5)

[Claims] 1. A first process of attaching a magnetic tag to each product in advance, and inputting dummy data to a theft candidate database in advance;
A second step of initializing the theft candidate database, a third step of clearly indicating that an anti-theft gate has been installed in advance, and deterring the theft; Assuming the existence, a fourth step of acquiring a moving image of a purchaser entering the gate, a fifth step of extracting a universal amount of the moving image acquired in the fourth step, A sixth step of comparing the universal amount of the moving image acquired in step 5 with the universal amount in the theft candidate database to predict theft, and magnetizing the magnetic tag previously attached in the first step. A seventh process of changing the situation and recording that the goods have been paid for, and carrying the magnetization state of the magnetic tag using a carpet gate composed of an excitation coil and a magnetic sensor coil arranged on the floor. Eighth to detect if the goods are stolen In the eighth step, the ninth step in which the merchandise carrier acquires a moving image of the merchandise carrier while passing through the carpet type gate; and in the case where the theft of the merchandise is detected in the eighth step, A tenth process of extracting the universal amount of the moving image acquired in the ninth process, and comparing the universal amount acquired in the tenth process with the universal amount in the theft candidate database. An eleventh step of performing, and if it is determined from the eleventh step that the stolen commodity carrier has the universal amount in the theft candidate database, the theft candidate data in the theft candidate database is updated. In the twelfth process and the eleventh process, when it is determined that the stolen product carrier is not present in the theft candidate database, the moving image of the stolen product carrier and the universal amount are stored in the theft candidate database. Number to add 13. A method for deterring, preventing, and predicting theft of goods having 13 steps. 2. The method according to claim 1, wherein the carpet-type gate and the moving image information are used together to suppress, prevent, and predict theft. The first step is a step of attaching a magnetic tag as an anti-theft marker to the product. The second step is a step of creating or initializing a theft candidate database, and the third step is to show that the anti-theft gate has been set up for the product purchaser, The fourth step is a step of obtaining information on a product purchaser as a moving image. The fifth step is a step of obtaining a universal amount of a moving image of the product purchaser. The sixth step is a step of comparing the universal amount of the moving image of the product purchase applicant with the universal amount in the theft candidate database and predicting the possibility of theft. In the process of 7, the product is The eighth step is a step of recording whether or not the commodity has been stolen using a magnetic tag and a carpet-type gate, and the ninth step Is a process of acquiring information of a product carrier as a moving image. In the tenth process, when the product is determined to be stolen in the eighth process, a notification of the theft is obtained and the information is acquired in the ninth process. The eleventh step is a step of comparing the universal amount obtained in the tenth step with the universal amount in the theft candidate database, The twelfth process is a process of updating data of the stolen candidate in the stolen candidate database when it is determined in the eleventh process that the stolen commodity carrier is present in the stolen candidate database. The thirteenth In the eleventh step, when it is determined in the eleventh step that the stolen commodity carrier is not present in the theft candidate database, the moving image and the universal amount of the stolen commodity carrier are added to the theft candidate database. A theft deterrence / prevention / prediction method characterized by the following. 3. The anti-theft method according to claim 1, wherein the carpet-type gate is an anti-theft gate and deters theft. 4. The burglary candidate database according to claim 1, wherein one or more surveillance cameras are installed near the carpet-type gate, and burglary prediction information is acquired using a burglary candidate database. Theft prediction method. 5. A first magnetic tag attaching means for attaching a magnetic tag to a product, a second database initializing means for initializing a theft candidate database, and a third explicit display for suppressing theft. Anti-theft means, fourth moving image acquiring means for acquiring a moving image of a product purchaser entering the carpet type gate, and extracting a universal amount from the moving image of the product purchaser entering the carpet type gate Fifth universal quantity extracting means, sixth universal theft quantity obtaining means for comparing the universal quantity obtained by the fifth means with the universal quantity in the theft candidate database, and predicting the possibility of theft; Seventh magnetizing means for recording that the product has been properly purchased on the magnetic tag attached by means, and eighth theft determining means for determining whether or not the product is stolen using the magnetic tag and the carpet-type gate And when the product carrier passes through the gate, Ninth means for acquiring a moving image of the goods carrier, and when the goods are determined to be stolen by the eighth means, the moving image is notified from the notification of goods theft and the moving images obtained by the ninth means. A tenth universal quantity extracting means for extracting a universal quantity of; an eleventh matching means for comparing the universal quantity obtained by the tenth means with each universal quantity in the theft candidate database; Means for updating the stolen candidate data in the stolen candidate database when it is determined that the stolen commodity carrier is present in the stolen candidate database; If it is determined by the means that the stolen commodity carrier does not exist in the theft candidate database, the thirteenth adding the theft candidate data to the theft candidate database
Deterrence / prevention / prediction device having database updating means.