Payment system and payment program

Abstract

To prevent intrusion of privacy of a customer without limiting a write area of information concerning privacy.SOLUTION: A payment system S includes a wireless tag T, a switching unit 25, and a wireless tag detection unit 30. The wireless tag T can switch whether reading of the wireless tag is allowed in response to a switching signal that switches whether reading of the wireless tag is allowed, and is attached to a commodity with previously stored commodity information. The wireless tag detection unit 30 transmits a detection signal when detecting the wireless tag T by reading the wireless tag T. The payment system S disables reading of the wireless tag T of a commodity for which payment has been made, thereby restricting detection of the wireless tag T of the commodity for which payment has been made, by the wireless tag detection unit 30.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to an accounting system and an accounting program. [Background technology]

[0002] Conventionally, there are accounting systems that use wireless tags, as disclosed in Patent Document 1 and Patent Document 2. Wireless tags include standardized RFID (radio frequency identification) tags such as EPC GEN2 (EPCglobal Class1 Generation2).

[0003] This wireless tag has four memory areas, such as a user area "USER", a tag ID area "TID", an EPC area "EPC", and a reserved area "RESERVED". EPC is an abbreviation of Electronic Product Code, which is an internationally standardized GS1 identification code written to an RFID tag. In the case of the wireless tag of Patent Document 1, any user data is stored in the user area, tag identification information that does not overlap with other RFID tags is stored in the tag ID area at the manufacturing stage of the wireless tag, and code information indicating that it is a discount tag together with a product code is stored in the EPC area. In addition, an arbitrary access password is stored in the reserved area. Of the memory areas, the user area and the reserved area can be read and written using the access password stored in the reserved area, and the EPC area can be written using the access password. In addition, the tag ID area is write-restricted when the RFID inlet is manufactured.

[0004] The system disclosed in Patent Document 2 includes a POS (Point Of Sales) terminal, a wireless tag reader / writer that communicates with the POS terminal, a wireless tag reader installed at the entrance and exit, and an alarm device. In this system, a wireless tag is attached to a product, and stores the product information (product ID) in the user area and the tag identification information in the tag ID area. The wireless tag does not store a password before a transaction, and the password is written by the wireless tag reader / writer after a transaction is made using the POS terminal. Once the password is written to the wireless tag, the tag ID area remains readable, but the user area is set so that it cannot be read unless the password is entered. In this way, the system of Patent Document 2 prevents others from reading the product information of the products purchased by the customer by restricting the reading of the product information in the wireless tag of the products that have already been purchased, thereby preventing the invasion of the customer's privacy.

[0005] In addition, in the system of Patent Document 2, a wireless tag reader installed at the entrance is configured to detect a wireless tag passing through the entrance by reading the tag information, and to read the product information of the wireless tag. Then, when the wireless tag reader is able to read the product information of the wireless tag, that is, when it detects the wireless tag of a product before checkout, it transmits the information to an alarm device. When the alarm device receives information that the wireless tag of a product before checkout has been detected, it issues an alarm. Thus, in a conventional crime prevention solution using a checkout system, a wireless tag reader installed at the entrance first detects a wireless tag, then determines whether or not the wireless tag is attached to a product that has already been checked out, and the alarm device issues an alarm based on the result of the determination.

[0006] However, in conventional security solutions, the wireless tag reader at the entrance must determine whether the wireless tag is attached to a product that has already been purchased based on the operation of the accounting system. Therefore, the wireless tag reader at the entrance is dedicated to a specific accounting system and cannot be used for general purposes.

[0007] Furthermore, in the accounting system of Patent Document 2, in order to prevent violation of privacy, information relating to privacy is written only in a user area where reading can be restricted, which is undesirable as it limits the area in which information relating to privacy can be written. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] JP 2012-108603 A [Patent Document 2] JP 2009-187491 A Summary of the Invention [Problem to be solved by the invention]

[0009] Therefore, an object of the present invention is to provide a transaction system that can prevent violation of a customer's privacy without limiting the area in a wireless tag where information relating to privacy can be written. [Means for solving the problem]

[0010] In order to solve the above problems, the accounting system according to the present invention comprises: a wireless tag capable of switching whether or not the wireless tag can be read by a switching signal for switching whether or not the wireless tag can be read, the wireless tag storing product information in advance and attached to a product; A switching unit that transmits a switching signal; The wireless tag detection unit is configured to detect the wireless tag by reading the wireless tag, and transmits a detection signal when the wireless tag is detected. The switching unit renders the wireless tags of the purchased products unreadable, thereby restricting the wireless tag detection unit from detecting the wireless tags of the purchased products.

[0011] The accounting system preferably includes: a password generating unit that generates a payment-completed password for each wireless tag of each product based on predetermined information and predetermined rules; The wireless tag has a password storage area for storing a password, and is configured to switch whether or not the wireless tag can be read by a switching signal including the stored password, and also stores an unaccounted-for password before a transaction is made; The switching unit transmits a switching signal including an unaccounted password to the wireless tag of the product to restrict reading of the wireless tag, and also transmits the generated accounted password to the wireless tag, changing the unaccounted password stored in the wireless tag to the accounted password.

[0012] The accounting system preferably includes: An input unit for receiving input of predetermined information is further provided, The predetermined information includes customer information and / or product information.

[0013] The accounting system preferably includes: When a product is returned after a transaction, a switching unit transmits a switching signal including a transaction-completed password corresponding to the wireless tag of the product to the wireless tag to release the read restriction of the wireless tag, and also transmits an untransactioned password to the wireless tag to change the transaction-completed password stored in the wireless tag to the untransactioned password.

[0014] The accounting system preferably includes: Further comprising an alarm device that emits sound and / or light, The wireless tag detector transmits a detection signal to the alarm device, and upon receiving the detection signal, the alarm device emits sound and / or light.

[0015] In order to solve the above problems, the accounting program according to the present invention comprises: An accounting program for use in an accounting system that uses wireless tags attached to products, The wireless tag stores product information in advance and is capable of switching whether or not the wireless tag can be read by a switching signal that switches whether or not the wireless tag can be read, The accounting system is a computer having a storage device and a processor; A communication device that communicates with the wireless tag, The wireless tag has a password storage area for storing a password, and is configured to switch whether or not the wireless tag can be read by a switching signal including the stored password, and also stores an unaccounted-for password before a transaction is made; The storage device prestores predetermined rules for generating a completed-account password, a non-account password, and an accounting program. The accounting program is generating an accounted password based on predetermined rules; The communication device is made to transmit a switching signal including an unaccounted password to restrict reading of the wireless tag, and is also made to transmit the generated accounted password to the wireless tag to change the unaccounted password stored in the wireless tag to the accounted password. Effect of the Invention

[0016] The checkout system of the present invention prevents violation of customer privacy by making the wireless tags of checked-out items unreadable, and therefore can prevent violation of customer privacy without limiting the area in which information relating to privacy can be written. [Brief description of the drawings]

[0017] [Figure 1] 1 is a diagram showing an overview of an accounting system according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a diagram showing a memory area of ​​a wireless tag. [Diagram 3] FIG. 2 is a diagram showing the hardware configuration of an accounting device and a gate. [Figure 4] FIG. 2 is a functional block diagram of the accounting system. [Diagram 5]FIG. 13 is a flow diagram showing accounting processing. [Figure 6] FIG. 11 is a flow diagram showing a notification process. [Figure 7] FIG. 13 is a flow diagram showing a return processing. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] Hereinafter, an embodiment of the accounting system and accounting program of the present invention will be described with reference to the accompanying drawings.

[0019] FIG. 1 is a diagram showing an overview of a transaction system S according to this embodiment. As shown in FIG. 1, the transaction system S includes a wireless tag T, a data server 1, a transaction device 2, and a gate 3. In the transaction system S, a wireless tag T is attached to each product M, and the product M is transacted by the transaction device 2. The gate 3 is configured to detect and report the wireless tag T attached to an untransacted product M. Each component of the transaction system S will be described below.

[0020] <Radio tag> The wireless tag T is an RFID tag, and as shown in Fig. 2, has four memory areas: a TID area Ta, an EPC area Tb, a USER area Tc, and a RESERVED area Td. The TID area Ta stores a tag ID, and the EPC area Tb stores an SGTIN (Serialized GTIN), i.e., a GTIN used in the GS1 code with a unique number added. The GTIN corresponds to the "product information" of the present invention. The USER area Tc stores arbitrary user data. The RESERVED area Td has a password A pre-stored therein. The RESERVED area Td corresponds to the "password storage area" of the present invention, and the password A corresponds to the "non-account password" of the present invention.

[0021] The RFID tag T is configured to be able to switch whether or not the RFID tag can be read by a switching signal that switches whether or not the RFID tag can be read. Hereinafter, the state in which the RFID tag T is restricted from being read is referred to as a "protected mode." The switching signal includes a password, and this password corresponds to the password stored in the RESERVED area Td.

[0022] <Data Server> The data server 1 is a so-called server computer, and is configured to be able to communicate with the accounting device 2 via wired or wireless communication. The data server 1 stores the product name corresponding to the GTIN of each product M, the type of product M, and the price of product M. The data server 1 also stores information related to accounting and return processing.

[0023] <Accounting device> As shown in FIG. 3, the accounting device 2 has a communication device 2a, a computer 2b, a display device 2c, and an input device 2d.

[0024] The communication device 2a is capable of reading and writing to the wireless tag T, and is configured by a known wireless tag reader / writer.

[0025] The computer 2b has a storage device and an arithmetic unit. The storage device stores an accounting program according to the present invention, and the arithmetic unit operates based on the accounting program.

[0026] The display device 2c is composed of a display and displays information processed by the accounting device 2. The display device 2c may be composed of two displays to display information to the store clerk side and the customer side, or may be composed of only one display like a self-checkout.

[0027] The input device 2d includes a touch display and a barcode reader, but these are merely examples, and may include a keyboard instead of a touch display, or may not include a barcode reader. The configuration of the input device 2d is not particularly limited. The barcode reader is configured to be capable of reading two-dimensional and / or three-dimensional barcodes.

[0028] Fig. 4 is a functional block diagram of the accounting system S. As shown in Fig. 4, the accounting device 2 has a memory unit 20, a reading unit 21, an accounting processing unit 22, a display unit 23, a password generation unit 24, a switching unit 25, and an input unit 26.

[0029] The storage unit 20 stores a password A and a password generation rule (hereinafter simply referred to as the "generation rule") for generating a password Bn. The password A is a password used when switching the RFID tag T to a protected mode, and is stored in advance in all the RFID tags T. The generation rule is a rule that is predetermined for generating a password Bn, which will be described later.

[0030] The reading unit 21 reads product information (SGTIN) stored in the RFID tag T. The read product information is sent to the accounting processing unit 22 and the password generation unit 24. The reading unit 21 may read multiple RFID tags T at once. The product information of the RFID tag T includes a serial number unique to each RFID tag T, and the reading unit 21 recognizes each serial number, thereby preventing the same RFID tag T from being read multiple times.

[0031] The accounting processing unit 22 transmits the received GTIN to the data server 1, and receives product information corresponding to the transmitted GTIN from the data server 1. The accounting processing unit 22 then performs accounting based on the received product information, and transmits the product information and the processed information to the data server 1 and the display unit 23.

[0032] The display unit 23 displays the received information on the display device 2c.

[0033] The password generation unit 24 generates a password Bn for each RFID tag T based on the generation rules and the received GTIN. The password Bn corresponds to the "accounted password" of the present invention. The generation rules are configured to capture product information stored in the RFID tag T and generate a password Bn corresponding to each product M. Therefore, the password generation unit 24 generates the same password Bn for the RFID tag T attached to the same product M. The generated password Bn is transmitted to the switching unit 25. Note that this generation rule is merely an example, and the password generation unit 24 may, for example, capture a portion of the GTIN to generate the password Bn. The "product information" of the "predetermined information" of the present invention also includes a portion of the product information, such as a portion of the GTIN.

[0034] The switching unit 25 transmits a switching signal including the password A and the generated password Bn to the RF tag T corresponding to the password Bn, thereby switching the RF tag T to the protected mode and rewriting the password stored in the RF tag T from the password A to the password Bn.

[0035] In this way, the accounting system S makes the RFID tags T of checked-out products M unreadable, thereby preventing violation of customer privacy caused by others reading the RFID tags T of checked-out products M. As a result, the accounting system S can prevent violation of customer privacy without limiting the area in which information related to privacy can be written.

[0036] When returning a product, the input unit 26 accepts information entered via the input device 2d. The input unit 26 sends the entered information to the accounting processing unit 22 and password generation unit 24.

[0037] Figure 5 is a flow diagram showing the above-mentioned transaction process. As shown in Figure 5, (1) when a product M is moved to the transaction device 2 (S (step) 51 in Figure 5), the transaction system S reads the GTIN stored in the RFID tag T attached to the product M by the reader 21 (S52 in Figure 5).

[0038] (2) Next, the accounting system S receives the product information related to this RFID tag T from the data server 1 via the accounting processing unit 22 (S53 in FIG. 5) and performs accounting processing (S54 in FIG. 5). The accounting system S then displays the processed accounting information on the display device 2c (S55 in FIG. 5).

[0039] (3) In parallel, the accounting system S generates a password Bn using the password generation unit 24 (S56 in FIG. 5), sends a switching signal to the wireless tag T using the switching unit 25 to set the wireless tag T to the protected mode (S57 in FIG. 5), and switches the password stored in the wireless tag T from password A to password Bn (S58 in FIG. 5).

[0040] As a result, the accounting system S can perform accounting processing for all products M in a centralized manner, and can prevent violation of customer privacy related to the RFID tags T attached to all products M in a centralized manner.

[0041] <Gate> As shown in Fig. 1 and Fig. 3, the gate 3 has two upright plate-like members 3a, and a wireless tag detection unit 30 and an alarm device 31 provided on the plate-like members 3a. However, this is merely an example, and the gate 3 does not have to have the plate-like members 3a, and the alarm device 31 does not have to be provided on the plate-like members 3a. The wireless tag detection unit 30 may be provided, for example, at the top of the entrance / exit. The gate 3 may be provided, for example, at the entrance / exit of a store or at the exit of an area where transaction processing is performed. Below, the operation of each component of the gate 3 will be described with reference to Fig. 6.

[0042] The wireless tag detection unit 30 is configured with a known wireless tag reader, and the notification device 31 is configured with a speaker and a light. The speaker and the light do not need to be provided at the same position, and for example, only the speaker or the light may be provided on the plate-like member 3a.

[0043] The wireless tag detection unit 30 is configured to detect the wireless tag T by reading memory information of the wireless tag T passing between the two plate-like members 3a. When the wireless tag detection unit 30 detects the wireless tag T passing between the plate-like members 3a (S61 in FIG. 6) (Yes in S62 in FIG. 6), it transmits a detection signal to the alarm device 31 (S63 in FIG. 6). The memory information of the wireless tag T read by the wireless tag T is not particularly limited. In other words, the wireless tag detection unit 30 according to the present invention can utilize a wireless tag detection device (wireless tag reader) used in a conventional security system without particularly changing its configuration.

[0044] When the notification device 31 receives the detection signal, it emits a sound from the speaker and emits a light from the light (S64 in FIG. 6), thereby notifying the customer, store clerks, and security guards that the unpaid product M has passed through the gate 3.

[0045] Because the wireless tag T attached to the purchased product M has been switched to the protection mode, the wireless tag detection unit 30 cannot detect the wireless tag T attached to the purchased product M (No in S62 of FIG. 6). Therefore, the alarm device 31 does not emit light or sound to the wireless tag T attached to the purchased product M.

[0046] <Return Processing> Next, with reference to FIG. 7, a description will be given of the process performed by the transaction device 2 when a completed transaction for product M is returned for some reason.

[0047] In the accounting system S, (1) when a product M is returned (S71 in FIG. 7), the product information (GTIN) for the returned product M and the accounting information for the product M are input via the input device 2d (S72 in FIG. 7).

[0048] (2) The accounting system S sends the GTIN and accounting information entered by the input unit 26 to the accounting processing unit 22 and the password generation unit 24 (S73 in FIG. 7). The GTIN for the returned product M may be obtained from the barcode affixed to the product M, and the accounting information for the returned product M may be obtained from information written on a receipt, for example.

[0049] (3) Next, the accounting system S receives the product information related to the input GTIN from the data server 1 via the accounting processing unit 22, and processes the return based on the received product information (S74 in FIG. 7).

[0050] (4) Next, the accounting system S generates a password Bn using the password generation unit 24 based on the generation rules and the received GTIN (S75 in FIG. 7), and sends the generated password Bn to the switching unit 25.

[0051] (5) Next, the accounting system S sends a switching signal including the received password Bn and password A to the wireless tag T corresponding to the returned product M via the switching unit 25 to cancel the protection mode (S76 in FIG. 7), and also rewrites the password stored in the wireless tag T from password Bn to password A (S77 in FIG. 7).

[0052] (6) Next, the accounting system S causes the display unit 23 to display the processed information on the display device 2c (S78 in FIG. 7).

[0053] This allows this RFID tag T to be reused in the same way as other RFID tags T. Furthermore, by rewriting the password A to password Bn when setting the protection mode, the accounting system S can prevent the protection mode of the RFID tag T of a product M that is not to be returned from being turned off when the product is returned.

[0054] With the above configuration, the accounting system S cannot read any information on the RFID tag T attached to a product M after a transaction has been completed, and can therefore prevent violation of a customer's privacy without limiting the area in which privacy-related information can be written on the RFID tag T. Furthermore, by making the RFID tag T attached to a product M after a transaction cannot be read, the accounting system S can also prevent malfunctions of security gates at other stores by making it impossible to detect the RFID tag T by security gates at other stores.

[0055] Furthermore, by setting the RF tag T to protection mode in advance when carrying the product M with an RF tag T attached through the gate 3 into the store, the accounting system S can carry the product M into the store without activating the alarm function of the gate 3. Then, after carrying the product M into the store, the accounting system S may release the protection mode of multiple RF tags T all at once by using a switching signal including the password A.

[0056] Although one embodiment of the accounting system and accounting program of the present invention has been described above, the accounting system and accounting program of the present invention are not limited to the above embodiment. For example, the accounting system and accounting program of the present invention may be implemented in the following modified examples or a combination of the modified examples.

[0057] <Modification> The accounting system S according to the present invention does not use the memory of the user area of ​​the RFID tag T, so the RFID tag T related to the accounting system S does not need to have a user area.

[0058] In accounting processing, the accounting system S may obtain the price of the product M by obtaining information from a barcode read by a barcode reader, or by obtaining information from the price tag attached to the product M that is entered via a keyboard.

[0059] The accounting system S may, for example, not generate a password Bn, and may simply be operated using the password A. In this case, the accounting system S does not have a password generation unit 24, does not rewrite the password of the RF tag T when setting the protected mode, and also cancels the protected mode with a switching signal that includes the password A. In this case, the accounting system S may not have an input unit 26.

[0060] The order of accounting processing in the accounting system S and setting the protection mode of the RFID tags T is not particularly limited. For example, when accounting processing multiple products M, the accounting system S may set the protection mode of the RFID tags T one by one while processing each product one by one. Alternatively, the accounting system S may set the RFID tags T to protection mode after the accounting processing is completed. In this case, the accounting system S may be configured separately as a so-called cash register and a RFID tag reader / writer.

[0061] The password generation rules are not limited to those in the above embodiment. For example, the password generation unit 24 may generate password Bn by capturing all or any of the date and time of transaction, the customer's membership number, the customer's date of birth, and the tag ID. In this case, the accounting system S may further include a reader for reading this information. Also, the accounting system S may be configured to capture information that is not printed on receipts to generate password Bn, and by having the customer provide this information verbally or by showing a membership card when returning goods, it is possible to prevent the return of counterfeit goods M.

[0062] For example, if the password generation rule is such that password Bn is generated using customer information rather than product information, return processing by accounting system S may be performed, for example, as follows: (1) when product M is returned, accounting system S (2) receives customer information and generates password Bn. Next, accounting system S (3) cancels protection mode using password Bn and reads product information (SGTIN) stored in RFID tag T. Next, accounting system S (4) processes the return based on the read product information, and (5) next rewrites the password of RFID tag T related to the return from password A to password Bn.

[0063] The wireless tag T in the accounting system S may have a conventional function of restricting reading and writing to only a part of the memory area, for example. The wireless tag T may also have a so-called kill mode in which no response is received from the wireless tag reader / writer. In these cases, the access password and kill password used for these functions of the wireless tag T may be the same as the password A.

[0064] The accounting system S may have a function to temporarily read the RFID tag T when the RFID tag T is in a protected mode. In other words, the accounting system S may have a function to send a special command including the password Bn to the RFID tag T to release the protected mode, read the information in the RFID tag T, and then send another special command including the password Bn to reset the protected mode using the password Bn. [Explanation of symbols]

[0065] S Accounting System T Radio tag M product 1 Data Server 2. Accounting equipment 2a Communication equipment 2b Computer 2c display device 2d input device 20 Memory section 21 Reading unit 22 Accounting Department 23 Display section 24 Password Generation Section 25 Switching section 26 Input section 3. Gate 3a Plate-shaped member 30 Wireless tag detection unit 31 Notification device

Claims

1. A wireless tag capable of switching whether or not a wireless tag can be read by a switching signal for switching whether or not a wireless tag can be read, the wireless tag storing product information in advance and attached to a product; A switching unit that transmits a switching signal; a wireless tag detection unit configured to detect the wireless tag by reading the wireless tag and transmit a detection signal when the wireless tag is detected; The accounting system restricts detection of the wireless tags of the paid-for products by the wireless tag detection unit by making the wireless tags of the paid-for products unreadable using the switching unit.

2. a password generating unit that generates a payment-completed password for each of the wireless tags of each product based on predetermined information and predetermined rules; the wireless tag has a password storage area for storing a password, and is configured to switch whether or not the wireless tag can be read by the switching signal including the stored password, and a non-accounting password is stored in advance before a transaction is made; The accounting system described in claim 1, wherein the switching unit transmits the switching signal including the unaccounted password to the wireless tag of the product to restrict reading of the wireless tag, and transmits the generated paid password to the wireless tag and changes the unaccounted password stored in the wireless tag to the paid password.

3. An input unit that receives input of the predetermined information, The accounting system according to claim 2 , wherein the predetermined information includes customer information and / or product information.

4. The accounting system described in claim 3, wherein, when a product is returned after payment, the switching unit sends the switching signal including the paid-for password corresponding to the wireless tag of the product to the wireless tag to lift the read restriction of the wireless tag, and also sends the non-paid-for password to the wireless tag and changes the paid-for password stored in the wireless tag to the non-paid-for password.

5. Further comprising an alarm device that emits sound and / or light, The wireless tag detection unit transmits the detection signal to the notification device, The accounting system according to any one of claims 1 to 4, wherein the alarm device emits sound and / or light upon receiving the detection signal.

6. An accounting program for use in an accounting system that uses wireless tags attached to products, The wireless tag stores product information in advance, and a switching signal for switching whether or not the wireless tag can be read is used to switch whether or not the wireless tag can be read. The accounting system includes: a computer having a storage device and a processor; a communication device that communicates with the wireless tag, the wireless tag has a password storage area for storing a password, and is configured to switch whether or not the wireless tag can be read by the switching signal including the stored password, and a non-accounting password is stored in advance before a transaction is made; The storage device prestores predetermined rules for generating a completed-account password, the unaccounted-for password, and the accounting program, The accounting program is installed on the computer. generating the accounted password based on the predetermined rules; An accounting program that causes the communication device to transmit the switching signal including the unaccounted password to restrict the reading of the wireless tag, and also causes the communication device to transmit the generated accounted password to the wireless tag, thereby changing the unaccounted password stored in the wireless tag to the accounted password.

7. A wireless tag capable of switching whether or not a wireless tag can be read by a switching signal for switching whether or not a wireless tag can be read, the wireless tag storing article information in advance and attached to an article, A switching unit that transmits a switching signal; a wireless tag detection unit configured to detect the wireless tag by reading the wireless tag and transmit a detection signal when the wireless tag is detected; A system that restricts detection of the wireless tag of an item that has been subjected to a specified process by the wireless tag detection unit by making the wireless tag of the item that has been subjected to the specified process unreadable by the switching unit.

8. A password generating unit that generates a first password for each of the wireless tags of each of the items based on information on a person who takes the item, the item, or both, and a predetermined rule; the wireless tag has a password storage area for storing a password, and is configured to switch whether or not the wireless tag can be read by the switching signal including the stored password, and a second password is stored in advance before a predetermined process; The system described in claim 7, wherein the switching unit transmits the switching signal including the second password to the wireless tag of the item to restrict reading of the wireless tag, and transmits the generated first password to the wireless tag and changes the second password stored in the wireless tag to the first password.

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