JP2004310172A - Antitheft system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a antitheft system in which an incorrect operation is suppressed and an exact criminal image is acquired by recording a video when a merchandise is taken out, and when the merchandise passes a gate in order to clarify a shoplifted object. <P>SOLUTION: The antitheft system 10 is provided with a radio tag 22 mounted on merchandise 20, an entrance/exit antenna 24 which is arranged at the entrance/exit of the store and can communicate with the radio tag 22, an entrance/exit communicating means 26 connected to the entrance/exit antenna 24 for supplying power to the entrance/exit antenna 24, and for communicating the result of the communication with the radio tag 22, an alarm means 30 for generating an alarm and a control means 40 for controlling the operations of the entrance/exit communicating means 26 and the alarm means 30. When the entrance/exit communicating means 26 supplies power to the entrance/exit antenna 24, and the radio tag 22 communicates with the entrance/exit antenna 24, the control means 40 starts the alarm means 30 to generate an alarm. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an anti-theft system, and more particularly, to an anti-theft system that manages products by making a wireless tag and an antenna communicate with each other.
[0002]
[Prior art]
Conventionally, in the prevention of product theft, a security system that places a security guard and a surveillance camera that monitors the store, affixes a resonant tag to the product, and arranges a gate that emits radio waves or magnetic fields that react with the resonant tag Is provided.
However, since the resonance tag attached to the product can be easily removed, if the resonance tag is removed from the product, the alarm device will not work even if you leave the gate without being cleared, and metal products such as umbrellas There is a problem that malfunction may occur due to resonance with the like, and the system is inexperienced as a theft prevention system.
[0003]
In response to the operation of a resonance circuit that resonates with radio waves of a specific frequency from the transmitting antenna of the anti-theft system and a detachment detection switch and a switch that closes the contact when the anti-theft tag is separated from the monitored item Patent Document 1 discloses a theft prevention tag that simultaneously includes a buzzer that outputs a notification sound and a notification sound output unit that includes a light emitting unit that emits light at this time.
[Patent Document 1]
JP-A-8-185584
[0004]
[Problems to be solved by the invention]
The anti-theft system using the anti-theft tag described in Patent Document 1 uses a resonance radio wave. Therefore, the radio wave resonates even in a metal product or the like and malfunctions. If the murderer is unclear, or if the culprit who shoplifted flees, information about the culprit must be guessed from the video and time of the surveillance camera installed in the store, and in a crowded store Has a problem that it is difficult to grasp an accurate criminal image.
[0005]
The present invention minimizes malfunctions, clarifies what has been shoplifted, and records images of when shoplifted goods are taken out and when they pass through the gate without being cleared. It is therefore an object of the present invention to provide an anti-theft system capable of obtaining an accurate criminal image.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, the present invention has the following configuration.
That is, a wireless tag attached to a product, a wireless antenna communicable with the wireless tag, and an entrance / exit antenna disposed at an entrance / exit of a store, a power supply to the entrance / exit antenna connected to the entrance / exit antenna, An entrance / exit communication means for communicating a communication result between the tag and the entrance / exit antenna, an alarm means for generating an alarm, the entrance / exit communication means, and a control means for controlling the operation of the alarm means; When power is supplied to the entrance / exit antenna by the means, when the wireless tag and the entrance / exit antenna communicate, the control means activates the alarm means to generate an alarm, and the anti-theft system is characterized in that is there.
According to this, since the wireless tag is used as the anti-theft tag, various kinds of information on the product can be stored in the wireless tag, so that what has been shoplifted becomes clear.
In addition, since the wireless tag can be made very thin and small, it can be directly attached to a product, and it is not necessary to know where the wireless tag is attached. As a result, the wireless tag cannot be removed, and theft can be reliably prevented.
[0007]
The anti-theft system further includes an entrance / exit camera for photographing the vicinity of the entrance / exit, entrance / exit camera control means for controlling the operation of the entrance / exit camera, and storage means for storing photographed image data of the entrance / exit camera. When the entrance / exit antenna communicates, the entrance / exit camera control means causes the entrance / exit camera to photograph the vicinity of the entrance / exit, and wirelessly communicates the photographed image data taken by the entrance / exit camera with the entrance / exit antenna. It is preferable to control so as to be stored in the storage unit together with the tag information.
According to this, even if the product is taken out of the store without any liquidation in any way, since the image taken by the camera is stored together with the wireless tag information, the culprit and the stolen product can be grasped. This is very effective in security measures to be taken later.
[0008]
Still another invention provides a wireless tag attached to a product, a display shelf provided on a display shelf for displaying the product to which the wireless tag is attached, one or more display shelf antennas communicable with the wireless tag, and the display shelf A display shelf communication means connected to the antenna, for supplying power to the entrance / exit antenna, and communicating a communication result between the wireless tag and the display shelf antenna, and comparing a communication result between the wireless tag and the display shelf antenna with each other A storage unit for storing the information as information, and comparing the communication result between the wireless tag and the display shelf antenna with the comparison target information stored in the storage unit to determine whether the product enters or leaves the display shelf. Means, a display shelf camera for photographing the vicinity of the display shelf, an entrance / exit antenna communicable with the wireless tag, and disposed at an entrance / exit of a store; An entrance / exit communication unit connected to the entrance / exit antenna for supplying power to the entrance / exit antenna, and communicating a communication result between the wireless tag and the entrance / exit antenna, the display shelf communication unit, the storage unit, and the determination unit And the display shelf camera, and control means for controlling the operation of the entrance / exit communication means, wherein the judging means, when judging that a product has been taken out of the display shelf, displays the display shelf on the display shelf camera. Of the wireless tag, the captured image data is stored in the storage unit in association with the wireless tag information of the wireless tag attached to the product determined to have been taken out of the display shelf, and the wireless tag and the When communicating with the entrance / exit antenna, the entrance / exit camera causes the entrance / exit camera to photograph the vicinity of the entrance / exit, and the wireless tag which communicates the captured image data with the entrance / exit antenna A theft prevention system and controls so as to be stored in the storage means in association with the radio tag information.
According to this, at the time when the product is taken out of the display position and at the time when the product is taken out of the store, the photographing data by the camera can be stored together with the product information, so that the criminal image can be grasped more accurately. Can be.
[0009]
Still further, the anti-theft system includes an alarm unit, and when the wireless tag and the entrance / exit antenna communicate with each other when power is supplied to the entrance / exit antenna by the entrance / exit communication unit, the control unit outputs the alarm. Preferably, the means is activated.
According to this, an alarm is activated when a product that is easily shoplifted, such as a popular product, is taken out of the display place, so that the shop clerk can be alerted before the shoplifting, so that shoplifting itself is suppressed. can do.
[0010]
Further, it is preferable that the alarm means broadcasts signature music as an alarm in the store.
According to this, only the clerk can be alerted without giving any discomfort to the customer in the store, so that the atmosphere in the store is not broken.
[0011]
Furthermore, the alarm unit has a display unit, and displays product data such as a name of a product to which the wireless tag is attached based on a communication result with the wireless tag by the display shelf communication unit or the entrance / exit communication unit. Is preferred.
According to this, even if shoplifting occurs, the shoplifted goods can be specified at the entrance of the store, so that it becomes easy to grasp the evidence of shoplifting.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, preferred embodiments of the anti-theft system according to the present invention will be described in detail with reference to the accompanying drawings.
Note that the present invention is not limited to the present embodiment, and it goes without saying that various modifications are included in the technical scope of the present invention without departing from the spirit of the invention.
[0013]
(First Embodiment)
First, an outline of the anti-theft system according to the present embodiment will be described with reference to FIG. FIG. 1 is an explanatory diagram illustrating a schematic configuration of the anti-theft system according to the first embodiment.
The anti-theft system 10 according to the present embodiment is connected to a wireless tag 22 attached to a product 20, a door antenna 24 that is communicable with the wireless tag 22, and is provided at a doorway of a store, and is connected to the door antenna 24. , Communication with the wireless tag 22, and an entrance / exit communication means 26 for supplying power to the entrance / exit antenna 24, an entrance / exit camera 28 for photographing a state near the entrance / exit, and communication between the wireless tag 22 and the entrance / exit antenna 24. In this case, an alarm means 30 for generating an alarm, a storage means 32 for storing wireless tag information of a wireless tag attached to a product in the store and video data taken by the entrance camera 28, an entrance communication means 26, The camera 28 and the control means 40 for controlling the operation of the alarm means 30 constitute an outline.
[0014]
The product 20 and the wireless tag 22 can be displayed integrally by putting the product 20 in a case (not shown) to which the wireless tag 22 is attached, or by directly attaching the product 20 with a dedicated jig or the like. . In recent years, the IC chip of the wireless tag 22 has been reduced in size, so that it is sufficiently possible to embed it in the product 20 or in a package in advance.
The power source of the wireless tag 22 is obtained by converting radio waves emitted from the entrance / exit antenna 24. However, the power source is not limited to this. For example, a power source having a built-in thin battery may be used. Of course it is good.
In addition, data writing to the wireless tag 22 may be of a type that can be performed only a single time, but it is needless to say that a method of writing data a plurality of times may be used.
[0015]
Communication between the wireless tag 22 attached to the product 20 and the entrance / exit antenna 24 is controlled by entrance / exit communication means 26. Since the entrance / exit antenna 24 must always emit radio waves, power is always supplied. Further, when the store selling the product 20 is not partitioned off by a wall, if the entrance / exit antenna 24 is arranged so as to surround not only the entrance / exit of the store but also the outer periphery of the store, the entrance / exit from outside the entrance / exit can be obtained. This is preferable because the taking out of the product 20 can be monitored.
[0016]
A schematic operation of the anti-theft system according to the present embodiment will be described. In the anti-theft system 10 according to the present embodiment, in the product 20 taken out by the customer, the liquidation is not completed, the wireless tag 22 is not removed from the product 20, or the information that has been cleared at the cash register is displayed. When the communication result when the unrecorded wireless tag 22 passes through the entrance / exit antenna 24 is transmitted to the control unit 40 by the entrance / exit communication unit 26, the control unit 40 regards the product 20 as stolen. At the same time, the alarm means 30 is activated to generate an alarm. At this time, since the wireless tag 22 is attached to the product 20, if the store stores the wireless tag information (unique code) of the wireless tag 22 in advance, the product 20 that has responded to the entrance / exit antenna 24 is stolen. Is preferable because
[0017]
Further, the control means 40 activates the alarm means 30 and, at the same time, causes the entrance camera 28 disposed near the entrance to photograph the vicinity of the entrance, and transmits the photographed image data to the entrance / exit antenna 24 via the radio of the product 20. The storage unit 32 stores the information in association with the tag information.
Thereby, even if the product 20 is stolen, it is possible to clarify who took the stolen product 20 out, and this is preferable because it becomes effective information in the following anti-theft measures. .
[0018]
(Second embodiment)
In the first embodiment, the unsettled product 20 operates as the anti-theft system 10 only when it arrives at the entrance / exit antenna 24. Therefore, the product 20 that has responded to the entrance / exit antenna 24 really does not exist in the store. It is conceivable that it is not possible to confirm whether or not the product 20 is a failed product.
Therefore, by additionally arranging the communication antenna and the surveillance camera also on the display shelf 50 on which the products 20 are displayed, the products 20 are tracked from the time when the products 20 displayed in the store are taken out. This is a feature of the present embodiment.
[0019]
FIG. 2 is an explanatory diagram illustrating a schematic configuration of the anti-theft system according to the present embodiment. FIG. 3 is an explanatory plan view showing the antenna shape of the display shelf antenna. FIG. 4 is an operation flow of the anti-theft system according to the present embodiment.
In the present embodiment, a display shelf antenna 52 that emits a radio wave that reacts with the wireless tag 22 is also provided on the display shelf 50 on which the product 20 is displayed. The display shelf antennas 52 are respectively provided on the placement portions 50a of the products 20 on the display shelf 50, and are formed so as to be able to communicate with the respective wireless tags 22 of the products 20 displayed on the display shelf 50. As shown in FIG. 3, the display shelf antenna 52 is arranged in a “day” shape in a plan view on the placement portion 50 a of the display shelf 50, so that the product 20 placed on the placement portion 50 a The communication with the wireless tag 22 is suitably performed.
[0020]
The end of the display shelf antenna 52 is connected to the display shelf communication means 54, and the display shelf communication means 54 is set to communicate with the wireless tag 22 of the product 20 at predetermined intervals. Therefore, if the display shelf antennas 52 are not connected in series to the display shelf communication means 54 but the ends of the respective display shelf antennas 52 are connected in parallel to the display shelf communication means 54, the desired display shelf antenna 52 This is convenient because it is possible to selectively supply power to the power supply.
In addition, if the wireless tag 22 and the display shelf antenna 52 are of a reading type capable of identifying the wireless tags 22 of all the products 20 placed on the placement portion 50a by one communication, the communication efficiency is improved. It is suitable for
[0021]
In addition, a display shelf camera 56 is installed near the display shelf 50 so as to photograph that the product 20 has been taken out of the display shelf 50. The operation of the display shelf camera 56 is controlled by the control unit 40, and is set to operate in conjunction with the result of communication between the display shelf antenna 52 and the wireless tag 22.
The display shelf camera 56 can of course be operated as a monitoring camera for monitoring the inside of the store during normal times. In some cases, if the existing monitoring camera is set to be usable as the display shelf camera 56, the display shelf camera 56 can be used. This is advantageous because the introduction cost of the anti-theft system 10 can be reduced.
[0022]
First, power is supplied to the display shelf antenna 52 by the display shelf communication means 54 to communicate with the wireless tag 22 in order to grasp the state of the product 20 in the store before the store opens. The communication result is stored in the storage unit 32 as basic information.
The control means 40 (judgment means) compares the communication result between the wireless tag 22 and the display shelf antenna 52 with the basic information stored in the storage means 32 to determine that the product 20 has been taken out of the display shelf 50. to decide.
When the control unit 40 (determination unit) determines that the product 20 has been taken out of the display shelf 50, the control unit 40 causes the display shelf camera 56 to photograph the periphery of the display shelf 50.
[0023]
When the display shelf camera 56 takes an image of the vicinity of the display shelf 50, it is preferable to be able to identify from which position on the display shelf 50 the product 20 has been taken out. Thereby, the control unit 40 can cause the display shelf camera 56 to photograph the peripheral situation of the display shelf 50 around the position where the product 20 is taken out on the display shelf 50.
In this case, the wireless tag 22 and the display shelf antenna 52 are set to such a short time as to be able to photograph a state in which communication is always performed or a state in which the customer takes out the product 20 from the display shelf 50. Need to be kept. If the communication result between the wireless tag 22 and the display shelf antenna 52 is managed for each mounting portion 50a of the display shelf 50, the control means 40 (judgment means) starts from any position of the display shelf 50. Since it is possible to know whether or not the product 20 has been taken out, the operation can be controlled so that the display shelf camera 56 shoots an appropriate position.
[0024]
An outline of an operation flow of the anti-theft system 10 in the present embodiment will be described with reference to FIG.
Before the store is opened, the display shelf communication means 54 supplies power to each display shelf antenna 52 of the display shelf 50 and causes the display shelf antenna 52 to communicate with the wireless tag 22 of the product 20 (S201). The communication result is stored in the storage means 32 as basic data (S202).
[0025]
After the store is opened, the display shelf communication means 54 supplies power to the display shelf antennas 52 of the display shelf 50 at all times or at predetermined intervals to cause the display shelf antenna 52 to communicate with the wireless tag 22 of the product 20. (S203), the communication result is transmitted to the control means 40 (S204). The control unit 40 compares the received communication result with the basic data in the storage unit 32 to find out which merchandise 20 is taken out from which placement portion 50a of the display shelf 50, and the merchandise 20 is taken out. If it is determined (S205), the display shelf camera 56 causes the vicinity of the mounting portion 50a of the display shelf 50 to be photographed (S206). Subsequently, the control unit 40 converts the wireless tag information recorded in the wireless tag 22 attached to the product 20 determined to be taken out from the display shelf 50 and the image data captured by the display shelf camera 56 into: They are associated with each other and stored in the storage means 32 together with the communication time (S207).
If the product 20 has not been taken out of the display shelf 50 (S205; No), there is no difference from the basic data, and the process returns to S203.
[0026]
Further, the control unit 40 causes the storage unit 32 to store the communication data obtained by the display shelf communication unit 54 as comparison target data (S208). By repeatedly performing this, the control unit 40 compares the previously acquired communication data with the currently acquired communication data, and thus can obtain difference information for each communication.
Therefore, compared to the case where the communication data is compared with the basic data each time, the control unit 40 determines that the communication data has been taken out of the display shelf 50 only once, and the wireless tag information recorded in the storage unit 32 is the minimum required. Since the amount is limited, the storage capacity of the storage unit 32 can be saved.
The control unit 40 determines whether the product 20 taken out of the display shelf 50 is returned to the display shelf 50 again by comparing the communication result between the wireless tag 22 and the display shelf antenna 52 (S209). can do.
[0027]
The wireless tag 22 attached to the product 20 in the store is removed at the cash register or the wireless tag information is read by the POS system 80 if the product is properly cleared (S210; Yes), and the read wireless tag information is read. Is stored in the storage unit 32 as the purchased product information, the identification that the product 20 is the purchased product can be given (S211).
When the customer wants to leave the store, the customer passes through the entrance antenna 24. If the customer attempts to take the product 20 out of the store, the wireless tag 22 of the product 20 and the entrance / exit antenna 24 communicate (S212). As a result of comparing the communication data with the purchased product information, when the control unit 40 determines that the product 20 is not purchased properly (S213; No) (the state in which the wireless tag 22 is still attached, the entrance / exit antenna, In the case where the wireless tag information communicated with the communication unit 24 does not correspond to the purchased product in the storage unit 32), the control unit 40 activates the alarm unit 30 to generate an alarm (S214), and the entrance / exit camera. The state near the entrance is photographed by 28 (S215). The image data captured by the entrance camera 28 is stored in the storage unit 32 together with the date and time in association with the wireless tag information by the control unit 40 (S216).
[0028]
The alarm means 30 not only generates an alarm that can be recognized by all persons in the store, but also an alarm that can be noticed only by a store clerk; for example, a specific music that is set in advance to notify the user of a possible theft. It is fully possible to play (sign music).
[0029]
If the wireless tag 22 that has communicated with the display shelf antenna 52 matches the purchased product data stored in the storage unit 32, the control unit 40 does not perform any processing because it is a properly purchased product 20. It is not necessary to perform the operation, but more preferably, when the product 20 determined to be taken out from the display shelf 50 is purchased, the POS system 80 records the wireless tag recorded on the wireless tag 22 of the purchased product 20. The information may be transmitted to the control means 40. Thereby, the control unit 40 stores the wireless tag information of the purchased product 20 in the communication result between the wireless tag 22 and the display shelf antenna 52 stored in the storage unit 32 and the image data captured by the display shelf camera 56. It is also possible to delete the associated information (S217).
As described above, by deleting the communication data and the photographed image data stored in the storage unit 32 based on the wireless tag information, the storage capacity of the storage unit 32 can be significantly increased for the product 20 that has been legally purchased. This is preferable because savings can be made.
[0030]
Incidentally, even when the product 20 determined to be taken out of the display shelf 50 by the control means 40 is returned to the display shelf 50 again, the communication result between the wireless tag 22 and the display shelf antenna 52 indicates the difference between the comparison target data and the difference. Since this has occurred, the control means 40 can determine from the communication signal that the product 20 has been returned to the display shelf 50. At this time, by recording that the product 20 has been returned to the storage means 32, even if the product 20 has been taken out of the display shelf 50 but has not been purchased, the information on the product 20 is stored in the storage means 32. 32, the anti-theft system 10 is suitable because it can also be used as a product information management system.
[0031]
(Third embodiment)
In the present embodiment, the anti-theft system 10 is capable of more appropriately preventing the product 20 from being stolen by recording an identifier in the wireless tag 22 in the anti-theft system 10 described above. . The present embodiment will be described below. The anti-theft system 10 according to the present embodiment has the same configuration as the anti-theft system 10 according to the second embodiment.
[0032]
The present embodiment is characterized in that an identifier that can be distinguished from other products 20 is recorded on the wireless tag 22 attached to the product 20.
In the present embodiment, if specific information (identifier) is recorded in advance on the wireless tag 22 so that the specific product 20 can be recognized, the communication result between the wireless tag 22 and the display shelf antenna 52 can be used. Thus, it is possible to identify that the specific product 20 has been taken out of the display shelf 50. When the control unit 40 determines that the specific product 20 is taken out from the communication result, the control unit 40 immediately activates the alarm unit 30 to reproduce the alarm or the signature music.
[0033]
Specific products 20 include, for example, products 20 that are likely to be stolen, such as popular products and expensive products. In this way, the stolen product 20 can be prevented from being stolen by alerting the clerk when the product 20 is taken out from the display shelf 50.
[0034]
Although the anti-theft system 10 according to the present invention has been described in detail above, the present invention is not limited to these embodiments.
For example, the alarm unit 30 may be provided with a display unit (not shown) to display a product name or the like from the wireless tag information of the wireless tag 22 that has reacted with the entrance / exit antenna 24. Further, in a CD shop or the like, music data is stored in the storage means 32 together with the product name of the product 20 in the wireless tag information, and the wireless tag 22 reacts to the entrance / exit antenna 24, and based on the communication result, the control means 40 However, when it is determined that the product 20 has been stolen, the music data may be played by the alarm means 30 and the product name may be displayed on the display means.
[0035]
【The invention's effect】
From the above, the anti-theft system of the present invention has the following effects.
That is, since the wireless tag is used as the anti-theft tag, there is almost no malfunction and the product information can be stored in the wireless tag, so that what has been shoplifted becomes clear.
In addition, since the wireless tag can be made very thin and small, it can be directly attached to a product, and it is not necessary to know where the wireless tag is attached. As a result, the wireless tag cannot be removed, and theft can be reliably prevented.
Further, even if the product is taken out of the store without any liquidation in any way, since the image taken by the camera is stored together with the wireless tag information, the culprit and the stolen product can be grasped. Therefore, it is very effective in security measures afterwards.
[0036]
Further, at the time when the product is taken out from the display position and when the product is taken out of the store, the photographing data by the camera can be stored together with the product information, so that the criminal image can be more accurately grasped.
[0037]
In addition, since the wireless tag of the product is provided with an identifier for identifying it from other products, an alarm is activated when a popular product or a product that is easily shoplifted is taken out of the display place, so that shoplifting is possible. The shop clerk can be alerted at an earlier stage, so that shoplifting itself can be suppressed.
Furthermore, by broadcasting signature music in the store as an alarm, it is possible to call attention only to the store clerk without causing discomfort to other customers in the store, so that the atmosphere in the store is not broken.
[0038]
Further, since the alarm means has a display means and can display product data such as the name of the product taken out, even when shoplifting occurs, the shoplifting product can be specified at the entrance of the store. This has a significant effect, such as making it easier to obtain evidence of shoplifting.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram illustrating a schematic configuration of a theft prevention system according to a first embodiment.
FIG. 2 is an explanatory diagram illustrating a schematic configuration of an anti-theft system according to a second embodiment.
FIG. 3 is an explanatory plan view showing an antenna shape of the display shelf antenna.
FIG. 4 is an operation flow of the anti-theft system according to the second embodiment;
[Explanation of symbols]
10. Anti-theft system
20 products
22 wireless tag
24 doorway antenna
26 Doorway communication means
28 Doorway camera
30 Alarm means
32 storage means
40 control means
50 display shelves
52 Display shelf antenna
54 Display shelf communication means
56 Display Shelf Camera
80 POS system

Claims (7)

A wireless tag attached to the product,
An entrance / exit antenna communicable with the wireless tag and disposed at an entrance / exit of a store;
An entrance / exit communication unit connected to the entrance / exit antenna, supplying power to the entrance / exit antenna, and communicating a communication result between the wireless tag and the entrance / exit antenna,
Alarm means for generating an alarm;
The doorway communication means, comprising a control means for controlling the operation of the alarm means,
When power is supplied to the entrance / exit antenna by the entrance / exit communication means and the wireless tag communicates with the entrance / exit antenna, the control means activates the alarm means and generates an alarm. Prevention system. The anti-theft system, an entrance camera for photographing the vicinity of the entrance,
Doorway camera control means for controlling the operation of the doorway camera,
Storage means for storing the captured image data of the entrance camera,
When the wireless tag communicates with the entrance / exit antenna, the entrance / exit camera control means causes the entrance / exit camera to photograph the vicinity of the entrance / exit, and wirelessly communicates captured image data taken by the entrance / exit camera with the entrance / exit antenna. 2. The anti-theft system according to claim 1, wherein control is performed to store the tag together with the tag wireless tag information in the storage unit. A wireless tag attached to the product,
One or more display shelf antennas that are provided on a display shelf that displays the product to which the wireless tag is attached and that can communicate with the wireless tag,
A display shelf communication unit that is connected to the display shelf antenna, supplies power to the entrance / exit antenna, and performs communication of a communication result between the wireless tag and the display shelf antenna;
Storage means for storing a communication result between the wireless tag and the display shelf antenna as comparison target information,
By comparing the communication result between the wireless tag and the display shelf antenna with the comparison target information stored in the storage unit, a determination unit that determines whether the product enters or exits the display shelf,
A display shelf camera for photographing the vicinity of the display shelf,
An entrance / exit antenna communicable with the wireless tag and disposed at an entrance / exit of a store;
An entrance / exit communication unit connected to the entrance / exit antenna, supplying power to the entrance / exit antenna, and communicating a communication result between the wireless tag and the entrance / exit antenna,
The display shelf communication means, the storage means, the determination means, the display shelf camera, and control means for controlling the operation of the entrance communication means,
The determining means, when determining that the product has been taken out of the display shelf, causes the display shelf camera to shoot an image of the vicinity of the display shelf, and applies the captured image data to the product determined to have been taken out of the display shelf. The storage means is stored in association with the wireless tag information of the attached wireless tag, and when the wireless tag communicates with the entrance / exit antenna, the entrance / exit camera photographs the vicinity of the entrance / exit and capture image data. And controlling the information to be stored in the storage unit in association with the wireless tag information of the wireless tag communicating with the entrance / exit antenna. The anti-theft system includes an alarm unit,
The power supply to the entrance / exit antenna by the entrance / exit communication means, and when the wireless tag communicates with the entrance / exit antenna, the control means activates the alarm means. Anti-theft system. Some of the wireless tags attached to the products are provided with identifiers for identifying the products from other products, and the determining unit determines that the products to which the wireless tags with the identifiers are attached are displayed from the display shelf. If you determine that it has been removed,
5. The anti-theft system according to claim 2, wherein said control means controls to activate said alarm means. The anti-theft system according to any one of claims 1, 2, 4, and 5, wherein the alarm means broadcasts signature music as an alarm in the store. The alarm means has a display means,
The product data such as the name of the product to which the wireless tag is attached is displayed based on the result of communication with the wireless tag by the display shelf communication means or the entrance / exit communication means. 7. The anti-theft system according to any one of 6.

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