Product sales data processing method

Abstract

To provide a commodity sales data processing device and a program that can immediately perform fraud check and perform efficient accounting processing.SOLUTION: A commodity sales data processing device according to an embodiment includes: a code symbol reading unit that reads a code symbol attached to a commodity having the code symbol and a wireless tag attached thereto; a first wireless tag reading unit that reads the wireless tag attached to the commodity before the code symbol reading unit reads the code symbol; a second wireless tag reading unit that reads the wireless tag attached to the commodity after the code symbol reading unit reads the code symbol; a comparison unit that compares information read by the first wireless tag reading unit and information read by the second wireless tag reading unit; and a notification control unit that based on a comparison result obtained by the comparison unit, exerts control of causing a notification unit to perform notification.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The embodiment of the present invention is a product sales data processing method Regarding. [Background technology]

[0002] 2. Description of the Related Art Conventionally, retail stores such as supermarkets use product sales data processing devices, also called self-checkout devices or self-POS devices, in which customers themselves perform operations related to product sales registration and accounting.

[0003] In such a product sales data processing device, weight checks are performed before and after product registration processing to prevent fraud during checkout. However, weight checks take time and can be an obstacle to efficient checkout processing. Summary of the Invention [Problem to be solved by the invention]

[0004] The problem to be solved by the present invention is to provide a product sales data processing system that can quickly perform fraud checks and efficiently perform accounting processes. How to The aim is to provide. [Means for solving the problem]

[0005] A merchandise sales data processing method according to an embodiment is a merchandise sales data processing method executed by a merchandise sales data device including a code symbol reading unit that reads a code symbol of a merchandise having a code symbol and a wireless tag attached thereto, a first wireless tag reading unit that reads from the wireless tag of the merchandise, and a second wireless tag reading unit that is arranged at a position different from the first wireless tag reading unit and reads from the wireless tag of the merchandise, wherein the first wireless tag reading unit performs a first reading from the wireless tag of the merchandise, and after the first reading, the code symbol reading unit reads the code symbol from the merchandise, and after reading the code symbol, the second wireless tag reading unit performs a second reading from the wireless tag of the merchandise, and compares information read the first time with information read the second time, and controls an alarm unit to issue an alarm based on a result of the comparison. and when the code symbol is read by the code symbol reading unit, the second radio tag reading unit is set to a readable state, and when the second radio tag reading unit reads new information that has not been read before from the radio tag, the second radio tag reading unit is set to an unreadable state. . [Brief description of the drawings]

[0006] [Figure 1] FIG. 1 is an external perspective view showing an example of the configuration of a self-checkout device according to the first embodiment. [Diagram 2] FIG. 2 is a diagram showing a schematic internal structure of the first product placement table. [Diagram 3] FIG. 3 is a block diagram showing an example of a hardware configuration of the self-checkout device according to the first embodiment. [Figure 4] FIG. 4 is a block diagram showing an example of a functional configuration of the self-checkout device according to the first embodiment. [Diagram 5] FIG. 5 is a flowchart showing an example of a process of the self-checkout device according to the first embodiment. [Figure 6] FIG. 6 is a block diagram showing an example of a hardware configuration of the self-checkout device according to the second embodiment. [Figure 7] FIG. 7 is a flowchart showing an example of a process of the self-checkout device according to the second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0007] Hereinafter, an embodiment of a product sales data processing device and a program will be described with reference to the drawings. In this embodiment, the product sales data processing device and the program are applied to a self-checkout device where the customer himself performs operations related to sales registration and accounting. Note that the present invention is not limited to the embodiment described below.

[0008] (First embodiment) Configuration of the Self-Checkout Device According to the First Embodiment 1 is an external perspective view showing an example of the configuration of a self-checkout device according to embodiment 1. The self-checkout device 1 is an example of a product sales data processing device, and is used in stores such as supermarkets.

[0009] The self-checkout device 1 includes a POS terminal 2, a first product placement table 20, and a second product placement table .

[0010] First, the POS terminal 2 will be described. The POS terminal 2 includes a touch panel 3, a monitor 4, a scanner 5, a hand scanner 6, a card insertion slot 7, a receipt issuing slot 8, a bill deposit / withdrawal slot 9, a coin insertion slot 10, and a coin removal slot 11. The touch panel 3 is disposed on the monitor 4. The monitor 4 displays various screens. For example, an organic electroluminescence display or a liquid crystal display may be used as the monitor 4.

[0011] Scanner 5 and hand scanner 6 read barcodes, two-dimensional codes, etc. attached to products. Scanner 5 and hand scanner 6 are examples of a "code symbol reading unit," and barcodes, two-dimensional codes, etc. are examples of a "code symbol." Scanner 5 and hand scanner 6 are also examples of an "imaging unit." Note that a separate camera for capturing product images may be provided as the "imaging unit."

[0012] The scanner 5 includes an optical imaging element such as a CCD (Charge Coupled Device) or a CMOS (Complementary Metal Oxide Semiconductor) and captures an image of an imaging area in front of a reading window. A customer holds a barcode, two-dimensional code, or the like attached to a product over the reading window of the scanner 5 to have the scanner 5 read the barcode, two-dimensional code, or the like.

[0013] Incidentally, for large products such as cardboard boxes or long products, it is difficult to hold the barcode or two-dimensional code on the product over the reading window of the scanner 5. In such cases, the customer holds the hand scanner 6 over the barcode or two-dimensional code on the product to have the barcode or two-dimensional code read.

[0014] The barcode, two-dimensional code, etc., has registered therein code information such as a Japanese Article Number (JAN) code or CODE128 that can uniquely identify the product. The scanner 5 and the hand scanner 6 may further include a function for identifying the product by general object recognition.

[0015] When making a payment (settlement), a customer inserts a membership card or credit card into the card insertion slot 7. The card insertion slot 7 is connected to a card reader 38, which will be described later. The receipt issuing slot 8 ejects receipts printed by a receipt printer 39, which will be described later. The receipt issuing slot 8 is connected to the receipt printer 39.

[0016] The banknote deposit / withdrawal slot 9 is used to deposit banknotes for settlement and to receive change. The coin insertion slot 10 is used to insert coins when settling a bill. The coin outlet 11 is used to receive change. The banknote deposit / withdrawal slot 9, the coin insertion slot 10, and the coin outlet 11 are connected to a change machine 37, which will be described later.

[0017] Next, the first product placement stand 20 will be described. The first product placement stand 20 is a stand on which a customer places unregistered products in his basket. The first product placement stand 20 is provided on the right side of the POS terminal 2, and includes a top plate 21. The top plate 21 is a substantially smooth plate. The top plate 21 is made of a material that transmits radio waves radiated from a first antenna 31, which will be described later. The material of the top plate 21 is, for example, wood or acrylic.

[0018] The first product placement table 20 also has a first placement area 22. The first placement area 22 is an area for placing a basket containing unregistered products.

[0019] Next, the second product placement stand 23 will be described. The second product placement stand 23 is a stand on which a customer places registered products. The second product placement stand 23 is provided on the left side of the POS terminal 2, and includes a top plate 24. The second product placement stand 23 has a second placement area 25. The second placement area 25 is an area on which a customer places registered products.

[0020] The top plate 24, like the top plate 21, is a substantially smooth plate and is made of a material that transmits radio waves radiated from a second antenna 33, which will be described later.

[0021] Here, the internal structure of the first product placement stand 20 will be described. Fig. 2 is a diagram showing a schematic internal structure of the first product placement stand. The first product placement stand 20 includes a partition board 26 below the top board 21. The partition board 26 is provided approximately parallel to the top board 21. A first antenna 31 is installed in the space formed between the top board 21 and the partition board 26 below the first placement area 22.

[0022] The first antenna 31 radiates radio waves upward (positive direction of the z-axis) to form a radiation range in which communication with an RFID tag is possible above the tabletop 21. Specifically, a radiation range 32 is formed above the first placement area 22 by the radio waves radiated by the first antenna 31.

[0023] Here, when a customer places a basket containing products in the first placement area 22, the products stored in the basket are included in the radiation range 32. The RFID tag attached to each product is activated by the radio waves emitted by the first antenna 31, and transmits the information stored in the tag to the first antenna 31. This allows the first placement area 22 to collectively read the information written on the tag from each of the products placed in the first placement area 22.

[0024] The installation positions and number of first antennas 31 and the radio wave radiation directions are merely examples and are not limited to these. For example, a tunnel large enough for a shopping card to pass through may be provided in place of first product placement stand 20, and multiple antennas may be installed in the tunnel to radiate radio waves in multiple directions.

[0025] Next, a description will be given of the internal structure of the second product placement stand 23. The second product placement stand 23 includes a partition plate 27 disposed substantially parallel to the top plate 24, and a second antenna 33 is installed in the space formed between the top plate 24 and the partition plate 27. The second antenna 33 forms an emission range 34 above the second placement area 25 by emitting radio waves.

[0026] The internal structure of the second product mounting table 23 is substantially similar to the internal structure of the first product mounting table 20, and therefore a detailed description thereof will be omitted. Note that, in order that the above-mentioned Fig. 2 can also be viewed as a diagram showing the internal structure of the second product mounting table 23, reference numerals for the case in which Fig. 2 is viewed as the second product mounting table 23 are written in parentheses in Fig. 2.

[0027] <Hardware Configuration of the Self-Checkout Device According to the First Embodiment> Next, a description will be given of the hardware configuration of the self-checkout terminal 1 according to the first embodiment. Fig. 3 is a block diagram showing an example of the hardware configuration of the self-checkout terminal according to the first embodiment.

[0028] The self-checkout terminal 1 includes a control unit 40 , a storage unit 41 , and an input / output controller 43 .

[0029] First, a description will be given of the control unit 40. The control unit 40 includes a central processing unit (CPU) 401, a read only memory (ROM) 402, and a random access memory (RAM) 403. The CPU 401 is connected to the ROM 402 and the RAM 403 via a bus line 42.

[0030] The CPU 401 loads various programs stored in the ROM 402 and the storage unit 41 into the RAM 403. The CPU 401 operates in accordance with the various programs loaded into the RAM 403 to control the self-checkout equipment 1. In other words, the control unit 40 has the configuration of a general computer.

[0031] In addition, the control unit 40 is connected to a storage unit 41 and an input / output controller 43 via a bus line 42 .

[0032] The storage unit 41 is a non-volatile memory such as a flash memory, in which stored information is retained even when the power is turned off, or a hard disk drive (HDD), etc. The storage unit 41 stores programs including a control program, etc. The control program is a program for implementing the functions of the self-checkout device 1.

[0033] The input / output controller 43 is connected to the touch panel 3, the monitor 4, the scanner 5, the hand scanner 6, the change machine 37, the card reader 38, and the receipt printer 39. The input / output controller 43 is also connected to the first RFID reader 35, the first antenna 31, the second RFID reader 36, and the second antenna 33.

[0034] The input / output controller 43 controls various connected hardware based on instructions from the control unit 40. The control unit 40, the memory unit 41, the input / output controller 43, the touch panel 3, the monitor 4, the scanner 5, the hand scanner 6, the change machine 37, the card reader 38, and the receipt printer 39 are all provided in the POS terminal 2.

[0035] Furthermore, the first RFID reader 35 and the first antenna 31 are built into the first product placement stand 20, and the second RFID reader 36 and the second antenna 33 are built into the second product placement stand 23. The first RFID reader 35 is an example of a "first wireless tag reading unit," and the second RFID reader 36 is an example of a "second wireless tag reading unit."

[0036] The touch panel 3 detects an operation by an operator on various buttons displayed on the monitor 4, and transmits information corresponding to the operation to the control unit 40. Instead of the touch panel 3, the POS terminal 2 may be provided with a mechanical switch.

[0037] The monitor 4 displays various buttons for operating the self-checkout terminal 1, product information read by the self-checkout terminal 1, and the like.

[0038] Scanner 5 and hand scanner 6 have been described above, and therefore their explanation will be omitted.

[0039] When a customer pays for a product in cash, the change machine 37 receives the bills and coins paid by the customer and dispenses change as necessary.

[0040] Card reader 38 reads a member ID for identifying a customer from a member card distributed to the customer in advance. In addition, when a customer makes a payment by credit card or a card with registered electronic money, card reader 38 reads the contents of these cards.

[0041] The receipt printer 39 prints the customer's transaction record on a receipt and issues it.

[0042] The first RFID reader 35 operates the first antenna 31 to emit radio waves from the first antenna 31. The first RFID reader 35 also acquires tag information from the RFID tag received by the first antenna 31, and outputs the tag information to the POS terminal 2. In other words, the first RFID reader 35 reads information written in the RFID tag.

[0043] In this embodiment, the first RFID reader 35 reads the RFID tag attached to the product before the scanner 5 or the hand scanner 6 reads the barcode, two-dimensional code, etc. Specifically, the first RFID reader 35 reads the serial number written in advance in the RFID tag attached to the product in the first placement area 22 before the scanner 5 or the hand scanner 6 reads the barcode, two-dimensional code, etc.

[0044] The serial number of an RFID tag is a unique value for each tag, and is information that is written in advance into the RFID tag.

[0045] Moreover, the second RFID reader 36 operates the second antenna 33 to emit radio waves from the second antenna 33. The second RFID reader 36 also acquires tag information from the RFID tag received by the second antenna 33, and outputs the tag information to the POS terminal 2. In other words, the second RFID reader 36 reads information written in the RFID tag.

[0046] In this embodiment, the second RFID reader 36 reads the RFID tag attached to the product after the scanner 5 or the hand scanner 6 has read the barcode, two-dimensional code, etc. Specifically, the second RFID reader 36 reads the serial number written in advance in the RFID tag attached to the product in the second placement area 25 after the scanner 5 or the hand scanner 6 has read the barcode, two-dimensional code, etc.

[0047] In addition, in this embodiment, the POS terminal 2 is capable of identifying whether the information read from the RFID tag is information read by the first RFID reader 35 or information read by the second RFID reader 36. For example, the first RFID reader 35 or the second RFID reader 36 can identify the information by attaching an identifier indicating the receiving antenna to the tag information and outputting the information to the POS terminal 2.

[0048] In this embodiment, the second RFID reader 36 becomes readable when a barcode, two-dimensional code, or the like is read by the scanner 5 or the hand scanner 6, and becomes unreadable when a new serial number that has not been read by the second RFID reader 36 before is read. This makes it possible to prevent fraudulent acts such as moving products that have not been paid for to the second placement area 25.

[0049] <Functions of the self-checkout device according to the first embodiment> Next, a description will be given of the functional configuration of the self-checkout device 1 according to the first embodiment. Fig. 4 is a block diagram showing an example of the functional configuration of the self-checkout device according to the first embodiment.

[0050] The self-checkout device 1 includes an image acquisition unit 111, a decoding unit 112, an image management unit 113, a comparison unit 114, a notification control unit 115, and an accounting processing unit .

[0051] Some or all of these functional units may be implemented as software by the cooperation of the processor (CPU 401) and various programs (e.g., control programs) stored in the memory (ROM 402, storage unit 41). Also, some or all of these functional units may be implemented as hardware by a dedicated circuit or the like.

[0052] The image acquisition unit 111 acquires an image captured by the scanner 5 or the hand scanner 6. Specifically, when an instruction to start a transaction is issued by an operation on the touch panel 3 or a signal sent from the POS terminal 2, the image acquisition unit 111 starts importing image data captured by the scanner 5 or the hand scanner 6 via the input / output controller 43.

[0053] Furthermore, when an instruction to end the transaction is given by operating the touch panel 3 or a signal sent from the POS terminal 2, the image acquisition unit 111 stops taking in the image data.

[0054] The decoding unit 112 extracts the encoded information by decoding the information. Specifically, the decoding unit 112 detects an area representing a barcode, a two-dimensional code, or the like from the image data acquired by the image acquisition unit 111, and executes a process for decoding the encoded data held by the barcode, the two-dimensional code, or the like.

[0055] Furthermore, the decoding unit 112 decodes encoded data stored in a barcode, a two-dimensional code, or the like, and outputs the extracted data to the POS terminal 2 or the like.

[0056] The image management unit 113 generates product image data 411 by associating the image captured by the imaging unit with the information of the wireless tag.

[0057] In this embodiment, the image management unit 113 generates product image data 411 by associating the serial number written in advance in the RFID tag attached to the product with the image of the product acquired by the image acquisition unit 111, and stores the product image data 411 in the storage unit 41. The product image data 411 is an example of "image information." The product image data 411 will be described later.

[0058] Specifically, when the second RFID reader 36 reads a new serial number, the image management unit 113 associates the serial number with the image of the product acquired by the image acquisition unit 111 immediately before the second RFID reader 36 reads the serial number, generates product image data 411, and stores it in the memory unit 41.

[0059] In addition, if the first RFID reader 35 does not read the serial number read by the second RFID reader 36, when associating the serial number with the product image, the image management unit 113 adds information to the effect that the first RFID reader 35 did not read the serial number, generates product image data 411, and stores it in the memory unit 41.

[0060] In this case, since a reading failure of the first RFID reader 35 is suspected, a product image with information indicating that the serial number was not read by the first RFID reader 35 is presented to the customer, and the customer is asked to confirm whether it is really the product they intended to purchase.

[0061] Here, if there is a product image with information indicating that the serial number has not been read by the first RFID reader 35, in order to present that product image to the customer and allow them to confirm whether it is really the product they intend to purchase, the serial number read by the second RFID reader 36 needs to be associated with the image of the product to which the RFID tag with that serial number is attached.

[0062] Therefore, in this embodiment, after the scanner 5 or hand scanner 6 has successfully read a barcode, two-dimensional code, etc., the image acquisition unit 111 stops acquiring images captured by the scanner 5 or hand scanner 6 until the second RFID reader 36 reads a new serial number.

[0063] This prevents an image of another product from being acquired after the scanner 5 or hand scanner 6 has read a barcode, two-dimensional code, etc., and before the second RFID reader 36 reads the serial number, so that the new serial number read by the second RFID reader 36 is reliably associated with the image of the product to which the RFID tag with that serial number is attached.

[0064] The comparison unit 114 compares the information read by the first RFID tag reading unit with the information read by the second RFID tag reading unit. In this embodiment, the comparison unit 114 compares the number of RFID tags read by the first RFID reader 35 with the number of RFID tags read by the second RFID reader 36.

[0065] In addition, the comparison unit 114 compares the serial number of the RFID tag attached to the product before the product registration process read by the first RFID reader 35 with the serial number of the RFID tag attached to the product after the product registration process read by the second RFID reader 36.

[0066] In this embodiment, one RFID tag is attached to each product, and one serial number that identifies the RFID tag is written in advance to the RFID tag. Therefore, the number of RFID tags read by the first RFID reader 35 can be known from the number of serial numbers of the RFID tags read by the first RFID reader 35. Similarly, the number read by the second RFID reader 36 can also be known.

[0067] Therefore, the comparison unit 114 can compare the number of products placed in the first placement area 22 before the product registration process with the number of products placed in the second placement area 25 after the product registration process.

[0068] This makes it possible to check for fraud by confirming that the number of products before and after the product registration process matches. This is because, for example, if a customer tries to take out a product before the product registration process without paying for it, the number of products before the product registration process will be greater than the number of products after the product registration process.

[0069] The notification control unit 115 controls the notification unit to issue a notification based on the comparison result of the comparison unit 114. In this embodiment, the notification control unit 115 controls the notification unit to issue a notification based on the comparison result by the comparison unit 114 between the number of RFID tags attached to the product before the product registration process read by the first RFID reader 35 and the number of RFID tags attached to the product after the product registration process read by the second RFID reader 36.

[0070] Furthermore, in this embodiment, if the comparison by the comparison unit 114 shows that the number of RFID tags attached to the product before the product registration process read by the first RFID reader 35 does not match the number of RFID tags attached to the product after the product registration process read by the second RFID reader 36, the notification control unit 115 controls the monitor 4 to display a message prompting the customer to confirm.

[0071] The display is an example of a "notification", the monitor 4 is an example of a "notification unit", and the customer is an example of an "operator".

[0072] Specifically, when the number of RFID tags attached to a product before the product registration process read by the first RFID reader 35 is greater than the number of RFID tags attached to a product after the product registration process read by the second RFID reader 36, the notification control unit 115 first controls the display of a message on the monitor 4 urging the customer to check whether there are any unregistered products remaining.

[0073] Then, when there are no unregistered products remaining, the notification control unit 115 performs control to display a message on the monitor 4 to the effect that a store clerk is being called. Note that the display of a message urging the customer to check whether there are any unregistered products remaining is an example of a "notification urging the operator to check."

[0074] Furthermore, when the notification control unit 115 controls the monitor 4 to display a message indicating that a store clerk is being called, the notification control unit 115 controls the notification unit to issue a warning indicating that fraudulent activity is suspected, without the knowledge of a customer using the self-checkout terminal 1. For example, the notification control unit 115 controls the notification unit to display a message indicating that fraudulent activity is suspected, on a management monitor installed in a position that cannot be seen by customers. Note that the "notification unit" in this case is the management monitor.

[0075] More specifically, when the number of RFID tags attached to a product before the product registration process read by the first RFID reader 35 is greater than the number of RFID tags attached to a product after the product registration process read by the second RFID reader 36, the notification control unit 115 first controls the monitor 4 to display a message such as "Are there any unregistered products remaining in your basket?", urging the customer to check whether there are any products remaining in the first placement area 22.

[0076] Then, when there are no unregistered products remaining, the notification control unit 115 performs control to display on the monitor 4 a message such as "A store clerk is being called to confirm."

[0077] Furthermore, the notification control unit 115 controls the display of a warning message such as "Fraudulent activity is suspected" and information identifying the self-checkout device 1 suspected of having committed fraud on a management monitor connected to the self-checkout device 1 via the server.

[0078] In addition to the above processing, the notification control unit 115 may also perform control to cause a speaker to emit a notification sound.

[0079] In addition, even if the number of RFID tags attached to a product before the product registration process read by the first RFID reader 35 matches the number of RFID tags attached to a product after the product registration process read by the second RFID reader 36, if the serial numbers of the RFID tags attached to the product before the product registration process read by the first RFID reader 35 do not match the serial numbers attached to the product after the product registration process read by the second RFID reader 36, the notification control unit 115 performs control to notify the user that a store clerk is being called, as described above.

[0080] This is because, after the registration process for all products has been completed, if any of the serial numbers on the RFID tags attached to the products after the product registration process and read by the second RFID reader 36 does not match the serial number on the RFID tag attached to the product before the product registration process and read by the first RFID reader 35, it is assumed that a product different from the product placed in the first loading area 22 has been placed in the second loading area 25, and fraud such as product switching is suspected.

[0081] Furthermore, in this embodiment, if the number of RFID tags attached to a product after the product registration process read by the second RFID reader 36 is greater than the number of RFID tags attached to a product before the product registration process read by the first RFID reader 35, the notification control unit 115 controls the monitor 4 to display a message urging the customer to check, based on the product image data 411.

[0082] Specifically, when the comparison by the comparison unit 114 indicates that the number of RFID tags attached to the product after the product registration process read by the second RFID reader 36 is greater than the number of RFID tags attached to the product before the product registration process read by the first RFID reader 35, the notification control unit 115 refers to the product image data 411 stored in the memory unit 41.

[0083] Then, the notification control unit 115 controls the monitor 4 to display a product image with information added to indicate that the serial number has not been read by the first RFID reader 35, and also controls the monitor 4 to display a message such as "Is this product really the product you are planning to purchase?", urging the customer to confirm whether or not it is really the product they plan to purchase.

[0084] Here, if the number of RFID tags read by the second RFID reader 36 is greater than the number of RFID tags read by the first RFID reader 35, there is a very high possibility that a reading problem has occurred in the first RFID reader 35. However, it cannot be said with certainty that there is no possibility that the number of RFID tags read by the second RFID reader 36 will be greater than the number of RFID tags read by the first RFID reader 35 due to other causes.

[0085] Therefore, the self-checkout device 1 according to this embodiment can prevent products that are not intended for purchase from being mistakenly registered by prompting the customer to confirm whether the product is actually intended for purchase in such a case.

[0086] If the number of RFID tags read after product registration increases due to reasons other than a reading malfunction of the first RFID reader 35, it is considered necessary for a store clerk to check the situation, so the notification control unit 115 controls the monitor 4 to display a message requesting that a store clerk be called.

[0087] In addition, if the comparison by the comparison unit 114 shows that the number of RFID tags and serial numbers attached to the product before the product registration process read by the first RFID reader 35 match the number of RFID tags and serial numbers attached to the product after the product registration process read by the second RFID reader 36, the notification control unit 115 controls the monitor 4 to display a message indicating that the checkout process will begin.

[0088] The accounting processor 116 performs accounting for products purchased by a customer. In this embodiment, if the comparison by the comparator 114 shows that the number of RFID tags and serial numbers attached to a product before product registration processing read by the first RFID reader 35 match the number of RFID tags and serial numbers attached to a product after product registration processing read by the second RFID reader 36, the accounting processor 116 performs accounting based on the price included in the information about each product read by the scanner 5 or hand scanner 6.

[0089] Next, the information stored in the memory unit 41 of the self-checkout equipment 1 will be described. The memory unit 41 stores product image data 411 generated by the image management unit 113. The product image data 411 is data that associates a serial number written in advance in an RFID tag with a product image. The storage destination of the product image data 411 is not limited to the memory unit 41. For example, the product image data 411 may be stored in a memory unit of an external device such as a server.

[0090] Furthermore, the data generated as the product image data 411 may include information indicating that the serial number has not been read by the first RFID reader 35.

[0091] As described above, in this embodiment, the product image data 411 is used in a process to prompt the customer to confirm whether the product in the image is really the product they intend to purchase when there is a discrepancy between the number of RFID tags attached to a product before the product registration process read by the first RFID reader 35 and the number of RFID tags attached to a product after the product registration process read by the second RFID reader 36, and a reading problem with the first RFID reader 35 is suspected.

[0092] <Processing of the Self-Checkout Device According to the First Embodiment> Next, a description will be given of the processing of the self-checkout terminal 1 according to the first embodiment. Fig. 5 is a flowchart showing an example of the processing of the self-checkout terminal 1 according to the first embodiment.

[0093] First, a customer places a basket containing products with barcodes, two-dimensional codes, etc. and RFID tags in the first placement area 22. The first RFID reader 35 reads the serial numbers written in advance on the RFID tags attached to the products before product registration processing (step S101). Next, the scanner 5 or hand scanner 6 reads the barcodes, two-dimensional codes, etc. attached to the products and performs product registration processing (step S102).

[0094] After the product registration process is completed, the customer moves the product to the second placement area 25. The second RFID reader 36 reads the serial number written in advance in the RFID tag attached to the product after the product registration process (step S103).

[0095] Then, the control unit 40 of the self-checkout equipment 1 checks whether or not the customer has given an instruction to end the product registration process (step S104). If the customer has not given an instruction to end the product registration process (step S104: No), the control unit 40 repeats the processes of steps S102 and S103 until the customer gives an instruction to end the product registration process.

[0096] If an instruction to end the product registration process is received (step S104: Yes), the comparison unit 114 compares whether the number of RFID tags attached to the product before the product registration process read by the first RFID reader 35 matches the number of RFID tags attached to the product after the product registration process read by the second RFID reader 36, and whether the serial number of the RFID tag attached to the product before the product registration process read by the first RFID reader 35 matches the serial number of the RFID tag attached to the product after the product registration process read by the second RFID reader 36 (step S105).

[0097] If the number of cards and the serial numbers match (step S105: Yes), the notification control unit 115 controls the monitor 4 to display a message informing the user that the transaction process is about to begin, and ends this process (step S109).

[0098] On the other hand, if the numbers or serial numbers do not match in step S105 (step S105: No), the comparison unit 114 checks whether the number of RFID tags attached to the product after the product registration process read by the second RFID reader 36 is greater than the number of RFID tags attached to the product before the product registration process read by the first RFID reader 35 (step S106).

[0099] If the number of RFID tags attached to the product after the product registration process read by the second RFID reader 36 is large (step S106: Yes), the notification control unit 115 refers to the product image data 411 stored in the memory unit 41, and controls the monitor 4 to display a product image data with information indicating that the serial number was not read by the first RFID reader 35, a message asking whether the product is really the product to be purchased, and a ``Yes'' button and a ``No'' button (step S107).

[0100] If the customer answers "Yes" (step S107: Yes), the notification control unit 115 controls the monitor 4 to display a message informing the customer that the transaction process will begin, and ends this process (step S109). If the customer answers "No" (step S107: No), the notification control unit 115 controls the monitor 4 to display a message informing the customer that a store clerk will be called, and ends this process (step S110).

[0101] On the other hand, in step S106, if the number of RFID tags attached to the products after the product registration process read by the second RFID reader 36 is less or the same (step S106: No), the notification control unit 115 controls the monitor 4 to display a message asking whether there are any unregistered products remaining, along with a ``Yes'' button and a ``No'' button (step S108).

[0102] Then, if an input of "No" is received from the customer (step S108: No), the notification control unit 115 controls the monitor 4 to display a message requesting that a store clerk be called. Furthermore, the notification control unit 115 controls the management monitor to display a warning message indicating that fraudulent activity is suspected and information identifying the self-checkout device 1 where fraudulent activity is suspected, and ends this process (step S109).

[0103] If the input of "Yes" is received from the customer (step S108: Yes), the process returns to step S102 and continues.

[0104] Effects of the self-checkout device according to the first embodiment Next, a description will be given of the effects of the self-checkout equipment 1 according to this embodiment. The self-checkout equipment 1 according to this embodiment compares the number and serial numbers of RFID tags attached to products before product registration processing read by the first RFID reader 35 with the number and serial numbers of RFID tags attached to products after product registration processing read by the second RFID reader 36, and controls the notification unit to issue a notification based on the comparison result.

[0105] Specifically, if the comparison by the comparison unit 114 shows that the number of RFID tags and serial numbers match, the notification control unit 115 controls the monitor 4 to display a message instructing the customer to proceed to the checkout process, and if there are a large number of RFID tags before the product registration process or if the serial numbers before and after the product registration process do not match, the notification control unit 115 controls the monitor 4 to display a message urging the customer to check whether there are any remaining unregistered products.

[0106] If there are no unregistered products remaining, the notification control unit 115 controls the notification unit to notify the store that a fraudulent act is suspected, without the customer knowing.

[0107] Therefore, the self-checkout equipment 1 according to this embodiment can avoid the weight check that is performed before and after the product registration process for the purpose of checking for fraud. And because the reading of the RFID tag is completed instantly, the self-checkout equipment 1 according to this embodiment can quickly check for fraud without reducing productivity, and can perform accounting efficiently.

[0108] In addition, when checking for fraud by weight check as in the conventional technology, if the weight of the product is approximately the same before and after the product registration process, it is determined that the number of products is the same before and after the product registration process, and if the number of products is the same before and after the product registration process, it is determined that there is no fraud.

[0109] In other words, when weight checks are used to check for fraud, the number of products is not counted directly before and after the product registration process to determine whether or not there is fraud. Therefore, for example, even if an item unrelated to the transaction is detected by a sensor that checks the weight of the product after the product registration process, if the weights detected by the sensor before and after the product registration process are approximately the same, it may be determined that the number of products matches and that there is no fraud.

[0110] In contrast, the self-checkout device 1 of this embodiment determines that the number of products matches and that there is no fraud when the number of RFID tags attached to products before the product registration process read by the first RFID reader 35 matches the number of RFID tags attached to products after the product registration process read by the second RFID reader 36.

[0111] In this embodiment, since one RFID tag is attached to each product, the number of tags read by the first RFID reader 35 can be regarded as the number of products before the product registration process. Similarly, the number of tags read by the second RFID reader 36 can be regarded as the number of products after the product registration process.

[0112] Therefore, unlike a case where a weight check is performed, the self-checkout terminal 1 according to the present embodiment can directly count and compare the number of products before and after the product registration process. In other words, it can be said that the self-checkout terminal 1 according to the present embodiment can confirm whether the number of products before and after the product registration process matches with higher accuracy than a case where a weight check is used.

[0113] In addition, the self-checkout equipment 1 according to this embodiment is equipped with an image management unit 113 that generates product image data 411 by associating a serial number written in advance on an RFID tag attached to an item with an image of the item captured by the scanner 5 or the hand scanner 6, and stores the data in the memory unit 41.

[0114] In addition, if the first RFID reader 35 does not read the serial number read by the second RFID reader 36, the image management unit 113 performs a process of adding information that the serial number was not read by the first RFID reader 35 when associating the serial number with the product image.

[0115] If the number of RFID tags attached to the product after the product registration process read by the second RFID reader 36 is greater than the number of RFID tags attached to the product before the product registration process read by the first RFID reader 35, the notification control unit 115 controls to display product image data with information added to indicate that the serial number has not been read by the first RFID reader 35, and to issue a notification to prompt the customer to confirm whether the product in the image is really the product they intend to purchase.

[0116] If the number of RFID tags attached to a product after the product registration process read by the second RFID reader 36 is greater than the number of RFID tags attached to a product before the product registration process read by the first RFID reader 35, there is a very high possibility that a reading problem has occurred in the first RFID reader 35.

[0117] However, it cannot be completely denied that there may be some other reason why the number of RFID tags attached to products after the product registration process and read by the second RFID reader 36 is greater than the number of RFID tags attached to products before the product registration process and read by the first RFID reader 35.

[0118] Therefore, the self-checkout device 1 according to this embodiment performs a process to prompt the customer to confirm whether the product in the image is truly the product they intend to purchase, thereby preventing products that the customer does not intend to purchase from being mistakenly registered.

[0119] Second embodiment Next, a self-checkout device 1 according to a second embodiment will be described. In the description of the second embodiment, the parts showing the same operations as those in the above-mentioned first embodiment are given the same reference numerals in the drawings, etc., and detailed descriptions thereof will be omitted.

[0120] <Hardware Configuration of Self-Checkout Device According to Second Embodiment> A description will be given of a hardware configuration of the self-checkout terminal 1 according to the second embodiment. Fig. 6 is a block diagram showing an example of a hardware configuration of the self-checkout terminal 1 according to the second embodiment.

[0121] The self-checkout device 1 according to the first embodiment differs from the self-checkout device 1 according to the second embodiment in that the self-checkout device 1 according to the first embodiment is equipped with a first RFID reader 35 and a second RFID reader 36, whereas the self-checkout device 1 according to the second embodiment is equipped with a first RFID reader / writer 51 and a second RFID reader / writer 52.

[0122] In this embodiment, the first RFID reader / writer 51 reads the RFID tag attached to the product before the scanner 5 or the hand scanner 6 reads the barcode, two-dimensional code, etc. The second RFID reader / writer 52 reads the RFID tag attached to the product after the scanner 5 or the hand scanner 6 reads the barcode, two-dimensional code, etc.

[0123] In this embodiment, the first RFID reader / writer 51 writes information to an RFID tag attached to a product before the scanner 5 or hand scanner 6 reads a barcode, two-dimensional code, etc. The second RFID reader / writer 52 writes information to an RFID tag attached to a product after the scanner 5 or hand scanner 6 reads a barcode, two-dimensional code, etc.

[0124] The first RFID reader / writer 51 is an example of a “first wireless tag reading unit” and also an example of a “first wireless tag writing unit.” The second RFID reader / writer 52 is an example of a “second wireless tag reading unit” and also an example of a “second wireless tag writing unit.”

[0125] Next, a specific process performed by the first RFID reader / writer 51 will be described. First, the first RFID reader / writer 51 writes "item number" and "pre-registration" information to an RFID tag attached to an item stored in a basket placed in the first placement area 22. The pre-registration information is an example of "first information."

[0126] The "product number" is a number for identifying a product, and plays a role similar to that of the "serial number" in the first embodiment. Note that the first RFID reader / writer 51 may write any number as the "product number" into the RFID tag, as long as there is no duplication of the number.

[0127] "Before registration" is information indicating that the product has not yet been registered. The first RFID reader / writer 51 writes the "before registration" information to the RFID tag attached to the product before the barcode, two-dimensional code, etc. is read by the scanner 5 or the hand scanner 6.

[0128] In this embodiment, the information that the first RFID reader / writer 51 writes to the RFID tag is "product number" and "before registration", but other information such as "date", a "machine number" that identifies the checkout device, and a "customer number" that identifies the customer may also be written. After writing "product number" and "before registration" to the RFID tag, the first RFID reader / writer 51 reads the information written in the RFID tag attached to the product.

[0129] Next, a description will be given of specific processing performed by second RFID reader / writer 52. Second RFID reader / writer 52 reads information written in an RFID tag attached to a product after scanner 5 or hand scanner 6 has read a barcode, a two-dimensional code, or the like.

[0130] After that, the second RFID reader / writer 52 rewrites the "before registration" written in the RFID tag to "after registration", which indicates that the product has been registered. The information after registration is an example of the "second information".

[0131] Here, if the second RFID reader / writer 52 cannot read the "product number" and "before registration" information from the RFID tag attached to the product after the product registration process, the second RFID reader / writer 52 writes a new "product number" that does not overlap with the "product number" written by the first RFID reader / writer 51 into the RFID tag attached to the product before the product registration process. At the same time, the second RFID reader / writer 52 writes the "after registration" information into the RFID tag attached to the product after the product registration process.

[0132] Functional Configuration of the Self-Checkout Device According to the Second Embodiment Next, a functional configuration of the self-checkout terminal 1 according to the second embodiment will be described. Since the functional configuration itself of the self-checkout terminal 1 according to the second embodiment is similar to that of the first embodiment, only differences in processing will be described.

[0133] First, a description will be given of the processing of the image management unit 113. In this embodiment, the image management unit 113 generates product image data 411 by associating the “product number” written by the first RFID reader / writer 51 in the RFID tag attached to the product with the product image acquired by the image acquisition unit 111, and stores the product image data 411 in the storage unit 41.

[0134] Specifically, when the second RFID reader / writer 52 reads a new “product number” that has not been read by the second RFID reader / writer 52, the image management unit 113 associates the “product number” with the image of the product acquired by the image acquisition unit 111 immediately before the second RFID reader / writer 52 reads the “product number” to generate product image data 411 and stores it in the memory unit 41.

[0135] In addition, if the second RFID reader / writer 52 is unable to read the "product number" from the RFID tag attached to the product after the product registration process, the image management unit 113 performs a process of associating the "product number" that the second RFID reader / writer 52 has written into the RFID tag attached to the product after the product registration process with the image data of the product acquired by the image acquisition unit 111 immediately before the second RFID reader / writer 52 wrote the "product number".

[0136] Then, the image management unit 113 adds information to the associated data indicating that the “product number” has not been written by the first RFID reader / writer 51, generates product image data 411, and stores it in the storage unit 41.

[0137] Next, a description will be given of the processing of the comparison unit 114. In this embodiment, the comparison unit 114 compares the number of RFID tags attached to products before the product registration process read by the first RFID reader / writer 51 and the "product numbers" written in the RFID tags attached to the products before the product registration process with the number of RFID tags attached to products after the product registration process read by the second RFID reader / writer 52 and the "product numbers" written in the RFID tags attached to the products after the product registration process.

[0138] Next, a description will be given of the processing of the notification control unit 115. In this embodiment, the notification control unit 115 refers to the product image data 411 stored in the storage unit 41 when the comparison result by the comparison unit 114 indicates that the number of RFID tags attached to the product after the product registration process read by the second RFID reader 36 is greater than the number of RFID tags attached to the product before the product registration process read by the first RFID reader 35.

[0139] Then, the notification control unit 115 controls the monitor 4 to display a product image with information added to the effect that the "product number" has not been written by the first RFID reader / writer 51, and also controls the monitor 4 to display a message such as "Is this the product you are really planning to purchase?", urging the customer to confirm whether or not it is really the product they plan to purchase.

[0140] <Processing of the Self-Checkout Device According to the Second Embodiment> Next, a description will be given of the processing of the self-checkout terminal 1 according to the first embodiment. Fig. 5 is a flowchart showing an example of the processing of the self-checkout terminal 1 according to the first embodiment.

[0141] First, a customer places a basket containing products with barcodes, two-dimensional codes, etc. and RFID tags on the first placement area 22. The first RFID reader / writer 51 writes the information "product number" and "before registration" to the RFID tag attached to the product before product registration processing (step S201).

[0142] Next, the first RFID reader / writer 51 reads the "product number" written on the RFID tag attached to the product before the product registration process (step S202). Next, the scanner 5 or the hand scanner 6 reads the barcode, two-dimensional code, etc. attached to the product and performs the product registration process (step S203).

[0143] After the product registration process is completed, the customer moves the product to the second placement area 25. The second RFID reader / writer 52 reads the "product number" and "before registration" information written on the RFID tag by the first RFID reader / writer 51 (step S204).

[0144] Then, the second RFID reader / writer 52 rewrites "before registration" to "after registration" (step S205).

[0145] In addition, if the “product number” and “before registration” information are not written in the RFID tag attached to the product after product registration is completed, the second RFID reader / writer 52 writes a new “product number” and “after registration” information that do not overlap with the “product number” that the first RFID reader / writer 51 wrote in the RFID tag attached to the product before product registration, into the RFID tag attached to the product after product registration is completed.

[0146] Then, the self-checkout device 1 checks whether or not the customer has issued an instruction to end the product registration process (step S206). If the customer has not issued an instruction to end the product registration process (step S206: No), the self-checkout device 1 repeats the processes in steps S203 to S205 until the customer issues an instruction to end the product registration process.

[0147] If an instruction to end the product registration process is received (step S206: Yes), the comparison unit 114 compares whether the number of RFID tags attached to the product before the product registration process read by the first RFID reader / writer 51 matches the number of RFID tags attached to the product after the product registration process read by the second RFID reader / writer 52, and whether the "product number" of the RFID tag attached to the product before the product registration process read by the first RFID reader / writer 51 matches the "product number" of the RFID tag attached to the product after the product registration process read by the second RFID reader / writer 52 (step S207).

[0148] If the quantity and "item number" match (step S207: Yes), the notification control unit 115 controls the monitor 4 to display a message informing the user that the transaction process is about to begin, and ends this process (step S211).

[0149] On the other hand, if the numbers or "product numbers" do not match (step S207: No), the comparison unit 114 checks whether the number of RFID tags attached to the product after the product registration process read by the second RFID reader / writer 52 is greater than the number of RFID tags attached to the product before the product registration process read by the first RFID reader / writer 51 (step S208).

[0150] If the number of RFID tags read by the second RFID reader / writer 52 is large (step S208: Yes), the notification control unit 115 refers to the product image data 411 stored in the memory unit 41, and controls the monitor 4 to display a product image of the data with information added that the "product number" was not read by the first RFID reader 35, a message asking whether the product is really the product to be purchased, and a "Yes" button and a "No" button (step S209).

[0151] If the customer answers "Yes" (step S209: Yes), the notification control unit 115 displays a message on the monitor 4 informing the customer that the transaction will begin, and ends the process (step S211). If the customer answers "No" (step S209: No), the notification control unit 115 displays a message informing the customer that a store clerk will be called, and ends the process (step S212).

[0152] On the other hand, in step S208, if the number of RFID tags attached to the products after the product registration process read by the second RFID reader / writer 52 is less or the same (step S208: No), the notification control unit 115 controls the monitor 4 to display a message asking whether there are any unregistered products remaining, along with a ``Yes'' button and a ``No'' button (step S210).

[0153] Then, if the input of "No" is received from the customer (step S210: No), the notification control unit 115 performs processing to display a message to call a store staff member on the monitor 4. Furthermore, the notification control unit 115 performs control to display, on the management monitor, a warning message to the effect that fraudulent activity is suspected and information identifying the self-checkout device 1 where fraudulent activity is suspected, and ends this processing (step S213).

[0154] If the input of "Yes" is received from the customer (step S210: Yes), the process returns to step S203 and continues.

[0155] Effects of the self-checkout device according to the second embodiment The self-checkout terminal 1 according to the second embodiment provides new effects by including the first RFID reader / writer 51 and the second RFID reader / writer 52 in addition to the effects similar to those of the first embodiment.

[0156] In this embodiment, the first RFID reader / writer 51 writes an "item number" to an RFID tag attached to an item before the item registration process. As a result, even when an RFID tag without a serial number is used, the self-checkout equipment 1 according to this embodiment can quickly and easily check for fraud by simply attaching an RFID tag to each item, thereby enabling efficient accounting.

[0157] In this embodiment, the first RFID reader / writer 51 writes information "before registration" to the RFID tag attached to the product before the product registration process. The second RFID reader / writer 52 then rewrites "before registration" written in the RFID tag attached to the product after the product registration process to "after registration." This makes it possible to distinguish whether a certain product is a pre-payment product or a post-payment product.

[0158] Therefore, for example, by installing a gate with a built-in RFID reader at the entrance or exit of a store and creating a system that issues a warning if it receives "pre-registration" information from an RFID tag, it will be possible to prevent items that have not been paid for from being taken out of the store.

[0159] Although the embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and spirit of the invention, and are included in the invention and its equivalents described in the claims.

[0160] For example, the program executed by the self-checkout equipment 1 in the above embodiment is provided by being pre-installed in a storage medium (ROM 402 or storage unit 41) equipped in the self-checkout equipment 1, but the present invention is not limited to this and may be configured to be provided by being recorded in an installable or executable format on a computer-readable storage medium such as a CD-ROM, a flexible disk (FD), a CD-R, or a digital versatile disk (DVD).

[0161] In addition, the storage medium is not limited to a medium independent of a computer or an embedded system, but also includes a storage medium that stores or temporarily stores a program downloaded via a LAN, the Internet, etc.

[0162] The program executed by the self-checkout equipment 1 of the above embodiment may be stored on a computer connected to a network such as the Internet and provided by being downloaded via the network. The program executed by the self-checkout equipment 1 of the above embodiment may be provided or distributed via a network such as the Internet. [Explanation of symbols]

[0163] 1 Self-checkout device 2. POS terminal 3. Touch Panel 4 Monitors 5. Scanner 6. Hand Scanner 7 Card slot 8 Receipt issuing port 9 Bill deposit / withdrawal slot 10 Coin slot 11 Coin outlet 20 First Product Stand 21, 24 Top plate 22 First placement area 23 Second Product Stand 25 Second Placement Area 26, 27 Partition board 31 First Antenna 32, 34 Radiation range 33 Second Antenna 35 The first RFID reader 36 Second RFID Reader 37 Change machine 38 Card Reader 39 Receipt Printer 40 Control section 401 CPU 402 ROM 403 RAM 41 Storage section 42 Bus Line 43 Input / Output Controller 111 Image acquisition unit 112 Decoding section 113 Image Management Department 114 Comparison Section 115 Notification control unit 116 Accounting Department [Prior art documents] [Patent documents]

[0164] [Patent Document 1] JP 2007-73031 A

Claims

1. A merchandise sales data processing method executed by a merchandise sales data device including a code symbol reading unit that reads a code symbol of a merchandise having a code symbol and a radio tag attached thereto, a first radio tag reading unit that reads from the radio tag of the merchandise, and a second radio tag reading unit that is disposed at a position different from that of the first radio tag reading unit and reads from the radio tag of the merchandise, The first wireless tag reader reads the wireless tag of the product for the first time; After the first reading, the code symbol is read from the product by the code symbol reading unit; After reading the code symbol, the second wireless tag reader performs a second reading from the wireless tag of the product; comparing the first read information with the second read information; Based on the comparison result, control is performed to cause the notification unit to issue a notification. when the code symbol is read by the code symbol reading unit, the second radio tag reading unit is set to a readable state, and when the second radio tag reading unit reads new information that has not been read before from the radio tag, the second radio tag reading unit is set to an unreadable state. How product sales data is processed.

2. A merchandise sales data processing method executed by a merchandise sales data device including a first wireless tag writing unit that writes information to a wireless tag of a merchandise having a code symbol and a wireless tag attached thereto, a code symbol reading unit that reads the code symbol of the merchandise, a first wireless tag reading unit that reads from the wireless tag of the merchandise, and a second wireless tag reading unit that is disposed at a position different from the first wireless tag reading unit and reads from the wireless tag of the merchandise, The first wireless tag writing unit writes information into the wireless tag of the product; After writing information to the wireless tag, the first wireless tag reader performs a first read from the wireless tag; After the first reading, the code symbol is read from the product by the code symbol reading unit; After reading the code symbol, the second wireless tag reader performs a second reading from the wireless tag of the product; comparing the information written in the wireless tag read for the first time with the information written in the wireless tag read for the second time; Based on the comparison result, control is performed to cause the notification unit to issue a notification. when the code symbol is read by the code symbol reading unit, the second radio tag reading unit is set to a readable state, and when the second radio tag reading unit reads new information that has not been read before from the radio tag, the second radio tag reading unit is set to an unreadable state. How product sales data is processed.

3. the product sales data device further includes a second wireless tag writing unit that writes information into the wireless tag of the product that is disposed at a position different from that of the first wireless tag writing unit; Before the first reading, the first wireless tag writing unit writes first information, which is information indicating that the wireless tag of the product is not yet registered, to the wireless tag of the product; After reading the code symbol, the second wireless tag writer rewrites the first information written in the wireless tag of the product to second information indicating post-registration. The merchandise sales data processing method according to claim 2.

4. comparing the number of the wireless tags read in the first read operation with the number of the wireless tags read in the second read operation; When the number of the wireless tags read the first time does not match the number of the wireless tags read the second time, the control unit controls the notification unit to issue a notification to prompt an operator to confirm. The merchandise sales data processing method according to any one of claims 1 to 3.

5. The product sales data device includes an imaging unit, generating image information that associates the image captured by the imaging unit with information on the wireless tag; The merchandise sales data processing method according to claim 4 , further comprising controlling a notification unit to issue a notification prompting an operator to confirm the image based on the generated image information.

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