TW202422455A - Cardless transaction system and method - Google Patents

Abstract

A cardless transaction system includes a bank server, a communication device, a processing control device, a biometric verification device and an automatic teller machine. The bank server obtains the identity information and transaction information from the mobile device, and provides the cardless transaction serial number. The signal of the communication device is connected to the bank server, and the cardless transaction serial number is received from the mobile device, and the cardless transaction serial number is received from the bank server. The processing and control device is connected to the communication device, receives two card-free transaction serial numbers from the communication device, and determines whether the two are consistent, so as to generate a first verification message. The biometric verification device is connected to the processing control device, receives the first verification message and performs biometric verification on a user to generate the second verification message. The automatic teller machine is connected to the processing control device, and executes a cardless designated transaction according to the cardless transaction serial number.

Description

Card-not-present transaction system and method

The present invention relates to a transaction system and method, and more particularly to a card-not-present transaction system and method.

Currently, only a few banks have ATMs that provide cardless deposit transaction functions. For risk control reasons, most banks currently provide general cardless deposit transactions limited to depositing the amount into one's own account and do not provide deposit services into other bank accounts. One of the risks of inter-bank deposits is the potential risk of money laundering due to the difficulty in identifying depositors.

In some cases, the current banking transaction system may not be able to meet customer needs. For example, a merchant on an online shopping platform only allows payment transactions with accounts of a specific bank. If the customer does not frequently use the account of the specific bank or does not even have an account, the transaction may not be completed through the ATM and needs to be handled at the bank, causing inconvenience in use.

In view of the above, the present invention provides a card-not-present transaction system and method.

A cardless transaction system according to an embodiment of the present invention includes a bank server, a communication device, a processing control device, a biometric verification device, and an ATM. The bank server is used to obtain identity data and transaction data from a first mobile device, and after performing identity verification on the identity data, provides a first cardless transaction serial number to the first mobile device and outputs a second cardless transaction serial number according to the transaction data, wherein the first cardless transaction serial number matches the second cardless transaction serial number. The communication device is signal-connected to the bank server, and is used to receive a transaction serial number to be verified from a second mobile device, and receive a second cardless transaction serial number from the bank server. The processing control device is connected to the communication device, and is used to receive the transaction serial number to be verified and the second card-not-present transaction serial number from the communication device, and determine whether the transaction serial number to be verified matches the second card-not-present transaction serial number to generate a first verification message. The biometric verification device is connected to the processing control device, and is used to receive the first verification message and perform biometric verification on a user to generate a second verification message. The ATM is connected to the processing control device, and is used to perform a card-not-present designated transaction according to the first card-not-present transaction serial number.

A card-not-present transaction method according to an embodiment of the present invention includes receiving identity data and transaction data from a first mobile device by a bank server; performing identity verification on the identity data by the bank server; when the identity verification instruction is passed, the bank server provides a first card-not-present transaction serial number to the first mobile device according to the transaction data and outputs a second card-not-present transaction serial number, wherein the first card-not-present transaction serial number matches the second card-not-present transaction serial number; receiving the transaction serial number to be verified from the second mobile device by a communication device, and receiving the second card-not-present transaction serial number from the bank server; processing the control device Determine whether the transaction serial number to be verified matches the second card-not-present transaction serial number; when the transaction serial number to be verified matches the second card-not-present transaction serial number, the processing control device generates a first verification message and transmits the first verification message to the biometric verification device; performs biometric verification on a user using the biometric verification device; when the biometric verification indication is passed, the biometric verification device generates a second verification message and returns it to the processing control device; transmits the second card-not-present transaction serial number to the ATM using the processing control device; and performs the card-not-present designated transaction according to the second card-not-present transaction serial number using the ATM.

Through the above structure, the cardless transaction system and method disclosed in this case can perform the first verification of the user's identity information through the bank server, perform the second verification by comparing the two cardless transaction serial numbers, and then perform the third verification through biometrics. In this way, it can be ensured that the user's personal information, the mobile device used, and the user himself must comply with the verification process, thereby completing cross-bank or cross-platform secure transactions without using a bank card.

The above description of the disclosed content and the following description of the implementation methods are used to demonstrate and explain the spirit and principle of the present invention, and provide a further explanation of the scope of the patent application of the present invention.

The detailed features and advantages of the present invention are described in detail in the following embodiments, and the contents are sufficient to enable any person skilled in the relevant art to understand the technical contents of the present invention and implement them accordingly. Moreover, according to the contents disclosed in this specification, the scope of the patent application and the drawings, any person skilled in the relevant art can easily understand the relevant purposes and advantages of the present invention. The following embodiments are to further illustrate the viewpoints of the present invention, but are not to limit the scope of the present invention by any viewpoint.

Please refer to FIG. 1, which is a block diagram of a cardless transaction system according to an embodiment of the present invention. As shown in FIG. 1, the cardless transaction system 1 includes a bank server 10, a communication device 20, a processing control device 30, a biometric verification device 40, and an ATM 50. The bank server 10 is used to obtain identity data and transaction data from a first mobile device, and after performing identity verification on the identity data, provides a first cardless transaction serial number to the first mobile device and outputs a second cardless transaction serial number according to the transaction data, wherein the first cardless transaction serial number matches the second cardless transaction serial number. The communication device 20 is signal-connected to the bank server 10, and is used to receive a transaction serial number to be verified from a second mobile device, and to receive a second cardless transaction serial number from the bank server 10. The processing control device 30 is connected to the communication device 20, and is used to receive the transaction serial number to be verified and the second card-not-present transaction serial number from the communication device 20, and determine whether the transaction serial number to be verified matches the second card-not-present transaction serial number to generate a first verification message. The biometric verification device 40 is connected to the processing control device 30, and is used to receive the first verification message and perform biometric verification on a user to generate a second verification message. The ATM 50 is connected to the processing control device, and is used to perform a card-not-present designated transaction according to the second card-not-present transaction serial number.

In this example, the bank server 10 can be a remote bank network host, which can be connected to the user's mobile device and ATM 50 through network signals. The bank server 10 can pre-store personal information of multiple users, such as online banking accounts, account information, personal basic information, etc., and the bank server 10 can be connected in series with multiple other bank servers, that is, the cardless transaction system 1 can perform various inter-bank transactions such as deposits, withdrawals, transfers or online payments. The communication device 20 can be, for example, Bluetooth, wireless network (WIFI) or other wireless signal transceivers connected to the bank server 10 through wireless communication. The processing control device 30 is connected to the communication device 20, the biometric verification device 40 and the ATM 50. Specifically, it can be a central processing unit, a microcontroller or various processors with computing and temporary storage capabilities, which are not limited here. The biometric verification device 40 can be a face recognition device, a finger vein recognition device or a voiceprint recognition device, etc., which can verify the biological characteristics of the human body. In addition to the above-mentioned connection relationship, the communication device 20, the processing control device 30 and the biometric verification device 40 can be set on or in the ATM 50.

The user can use the mobile device to complete the designated transaction through the above system without using a bank card. The cardless transaction method of the present case includes: using the bank server 10 to receive the identity data and transaction data from the first mobile device; using the bank server 10 to perform identity verification on the identity data; when the identity verification instruction is passed, the bank server 10 provides a first cardless transaction serial number to the first mobile device according to the transaction data and outputs a second cardless transaction serial number, wherein the first cardless transaction serial number matches the second cardless transaction serial number; using the communication device 20 to receive the transaction serial number to be verified from the second mobile device, and receiving the second cardless transaction serial number from the bank server 10; using the processing control device 30 to determine whether the transaction serial number to be verified is a cardless transaction. whether the transaction serial number matches the second card-not-present transaction serial number; when the transaction serial number to be verified matches the second card-not-present transaction serial number, the processing control device 30 generates a first verification message and transmits the first verification message to the biometric verification device 40; the biometric verification device 40 performs biometric verification on a user; when the biometric verification indication is passed, the biometric verification device 40 generates a second verification message and returns it to the processing control device 30; the processing control device 30 transmits the second card-not-present transaction serial number to the ATM 50; and the ATM 50 performs a card-not-present designated transaction according to the second card-not-present transaction serial number.

Please refer to FIG2 in conjunction with FIG1 , which is a flow chart of a card-not-present transaction method according to another embodiment of the present invention. As shown in FIG2 , the card-not-present transaction method includes steps S101 to S111 . Step S101: the bank server 10 can obtain the identity data and transaction data from the first mobile device; Step S102: the bank server 10 can perform identity verification on the identity data; Step S103: when the identity verification instruction is passed, step S104 can be executed, otherwise step S111 is executed; Step S104: the bank server 10 provides a card-not-present transaction sequence number to the first mobile device and generates a second card-not-present transaction sequence number; Step S105: the communication device 20 receives the transaction sequence number to be verified of the second mobile device and the second card-not-present transaction sequence number from the bank server 10; Step S106: the processing control device 30 determines whether the transaction with verification is a card-not-present transaction. Whether the serial number matches the second card-not-present transaction serial number, if so, execute step S107, otherwise execute step S111; step S107: the processing control device 30 generates and transmits a first verification message to the biometric verification device 40; step S108: the biometric verification device 40 performs biometric verification on a user, if passed, execute step S109, otherwise execute step S111; step S109: the biometric verification device 40 generates a second verification message and transmits it to the processing control device 30; step S110: the ATM 50 receives the second card-not-present transaction serial number from the processing control device 30 and executes a card-not-present designated transaction; and step S111: stop the transaction.

Specifically, in step S101, the bank server 10 can receive the login information (such as online banking account number and password) of the first mobile device on the online banking, and match it with a verification code (such as a graphic verification code), a text message verification code and/or a mobile ID (mobile ID, mid) to perform identity verification. In another embodiment, for non-bank users or users who have not registered for online banking, the bank server 10 can receive the user's personal basic information, personal assets, personal expense bills, etc. for Know Your Customer (KYC) information through the first mobile device, and receive the uploaded user's selfie for verification. In addition, the bank server 10 may receive a transaction form from the first mobile device, which may record the transaction operation that the user wishes to perform, such as a deposit operation, a transfer operation, a bill payment operation, or an online transaction operation. In step S102, the bank server 10 may perform the identity verification according to the pre-stored user data, wherein if the identity verification fails, the bank server 10 will immediately stop the transaction (i.e., step S111), so that the user cannot perform a card-not-present transaction through the ATM 50. In step S104 after the identity verification, the bank server 10 may generate a first card-not-present transaction sequence number and a second card-not-present transaction sequence number that are equal to each other according to the transaction data, and transmit the first card-not-present transaction sequence number to the first mobile device, and transmit the second card-not-present transaction sequence number to the communication device 20. The card-not-present transaction serial number may be a type of encrypted information pointing to the transaction data. The relationship between the transaction data and the card-not-present transaction serial number may be, for example, the relationship between the data stored in the blockchain and its hash value, which will not be described in detail here.

In step S105, the communication device 20 may receive a transaction number to be verified from the second mobile device via Bluetooth communication or other wireless communication methods, and transmit the transaction number to be verified and the second card-not-present transaction number to the processing control device 30. In step S106, the processing control device 30 may determine whether the transaction number to be verified is the same as the second card-not-present transaction number, that is, determine whether the transaction number to be verified is the same as the first card-not-present transaction number, or whether the first mobile device is the same as the second mobile device. For example, when an impostor obtains the identity information of a specific user through a method and passes the identity verification described in step S103, the bank server 10 will transmit the first card-not-present transaction serial number to the first mobile device (i.e., the mobile device of the specific user such as a mobile phone), so that the impostor can only enter an inconsistent transaction serial number to be verified without knowing the first card-not-present transaction serial number, and therefore cannot pass the comparison in step S106.

In step S107 after the comparison of the card-not-present transaction serial number, the processing control device 30 may transmit the first verification message to the biometric verification device 40 to trigger the biometric verification device 40 to perform further operations on the user. In step S108, for example, the facial recognition device may capture the facial image of the user in front of the ATM 50, and extract specific facial features from it to compare with the pre-stored facial features of the user to calculate a feature matching rate. When the feature matching rate is higher than a preset threshold, it is determined that the biometric verification is passed. Similarly, the biometric verification device 40 may also be a finger vein recognition device or a voiceprint recognition device based on other biometric features, and the present case is not limited thereto. When it is determined that the above-mentioned biometric verification has passed, the biometric verification device can transmit the second verification message to the processing control device 30 (step S109), and the processing control device 30 then transmits the second card-not-present transaction serial number to the ATM 50 accordingly, so that the ATM 50 can execute the card-not-present designated transaction according to the transaction data corresponding to the second card-not-present transaction serial number (step S110).

Please refer to FIG. 3, which is a block diagram of a cardless transaction system according to another embodiment of the present invention. As shown in FIG. 3, in this example, the cardless transaction system 1' includes not only the bank server 10, the communication device 20, the processing control device 30, the biometric verification device 40, and the ATM 50 that are the same as those in FIG. 1, but also a shielding device 60. The shielding device 60 has a storage space for accommodating the second mobile device and the communication device 20, and preventing the second mobile device from receiving an external signal. Specifically, the shielding device 60 can be a metal shell with the ability to shield electromagnetic waves, and has a specific communication port and a signal line to allow the communication device 20 to be connected to the bank server 10 by signal, wherein the bank server 10 in this example is arranged at the local end near the communication device 20 rather than the remote end. Regarding the operation process of the cardless transaction system 1' of this embodiment, please refer to Figures 4A to 4C, which are three schematic diagrams of the operation process of the cardless transaction system according to another embodiment of the present invention. As shown in Figure 4A, relative to step S101 shown in Figure 2, the bank server 10 can obtain identity information and transaction data from the first mobile device M1. It should be noted that at this time, the first mobile device M1 is located outside the shielding device (not shown), that is, the first mobile device M1 can be connected to the bank server 10 through a 4G/5G network for identity verification.

Then, as shown in FIG. 4B , relative to step S105 shown in FIG. 2 , the communication device 20 receives the second card-not-present transaction serial number from the bank server 10. It should be noted that the communication device 20 in this example is located within a shielding device (not shown), that is, the communication device 20 needs to be connected to the bank server 10 via signals such as a communication port and a signal line. Then, as shown in FIG. 4C , relative to step S105 shown in FIG. 2 , the communication device 20 receives the transaction serial number to be verified from the second mobile device M2. The second mobile device M2 in this example is located within the shielding device 60, so that when the second mobile device M2 signal is connected to the communication device 20, it is not interfered by external signals (such as fraudulent messages, etc.), thereby enhancing the transaction security of the card-not-present transaction process.

Please refer to FIG5, which is a block diagram of a cardless transaction system according to another embodiment of the present invention. As shown in FIG5, the cardless transaction system 1" of this example includes, in addition to the bank server 10, the first communication device 21 (i.e., the communication device 20 of FIG3), the processing control device 30, the biometric verification device 40, the ATM 50, and the shielding device 60 shown in FIG3, a second communication device 22 is disposed outside the shielding device 60 and connected to the first communication device 21 located inside the shielding device 60, and the signal is connected to the bank server 10. In this example, the second communication device 22 can be, for example, a Bluetooth, wireless network (WIFI) or other wireless signal transceiver that is connected to a signal transceiver end by wire at one end and is connected to another signal transceiver end by wireless communication. The second communication device 22 can be connected to the first communication device 21 located in the shielding device 60 through a communication port and a signal line. For the operation process of the cardless transaction system 1" of this embodiment, please refer to the flow chart shown in Figure 2. Relative to step S101, the bank server 10 of this example can receive identity data and transaction data from a first mobile device (not shown) located in the shielding device 60 through the first communication device 21 located in the shielding device 60 and the second communication device 22 signal-connected to the first communication device 21. With respect to step S105, when the identity verification instruction is passed, the bank server 10 transmits the second card-not-present transaction serial number to the first communication device 21 via the second communication device 22, and in the shielding device 60, the first communication device 21 receives the transaction serial number to be verified from the second mobile device.

Please refer to FIG6, which is a block diagram of a cardless transaction system according to an embodiment of the present invention. As shown in FIG6, the cardless transaction system 1 includes a bank server 10, a communication device 20, a processing control device 30, a biometric verification device 40, and an ATM 50 as shown in FIG1. In this example, the bank server 10 is further signal-connected to the Ministry of the Interior database I. For example, the Ministry of the Interior database I can be a remote Ministry of the Interior computer host. Relative to step S102 shown in FIG2, the bank server 10 can compare the user's identity data and the multiple user identity data provided by the Ministry of the Interior database I to perform the identity verification. In addition, the first mobile device and the second mobile device mentioned above are the same mobile device M in this example, that is, with respect to step S104 and step S105 as shown in FIG2 , the one that receives a card-not-present transaction serial number is the mobile device M, and the one that transmits the transaction serial number to be verified to the communication device 20 is also the mobile device M. In other words, the communication device 20 will receive the first card-not-present transaction serial number that matches the second card-not-present transaction serial number. It should be noted that the card-not-present transaction system 1 of this embodiment can also be replaced by a card-not-present transaction system as shown in FIG3 or FIG5 . Specifically, the bank server 10 can first be signal-connected to the mobile device M located outside the shielding device 60 to receive identity data and transaction data, and then the communication device 20 can be signal-connected to the mobile device M located inside the shielding device 60 to receive the first card-not-present transaction serial number. The relevant implementation methods can be referred to FIG. 4A to FIG. 4C , which will not be described in detail here.

Please refer to Figure 7, which is another block diagram of a cardless transaction system according to an embodiment of the present invention. As shown in Figure 7, the cardless transaction system 1 includes a bank server 10, a communication device 20, a processing control device 30, a biometric verification device 40 and an ATM 50 as shown in Figure 1. However, the cardless transaction system 1 can also be replaced by a cardless transaction system as shown in Figure 3 or Figure 5, and repeated and unnecessary descriptions will be omitted or skipped here. In this example, the bank server 10 is further signal-connected to the shopping platform P. For example, the shopping platform P can be a computer host of a remote e-commerce operator. Relative to step S101 shown in Figure 2, the mobile device M can transmit transaction information including the shopping platform P to the bank server 10. The bank server 10 may compare the transaction information with the multiple registered transaction data provided by the shopping platform P, and then compare the transaction data with the registered transaction data to find the corresponding ones. For example, the bank server 10 may use the payment account corresponding to the transaction data as the first card-not-present transaction sequence number and the second card-not-present transaction sequence number, and after generating the first card-not-present transaction sequence number and the second card-not-present transaction sequence number, the first card-not-present transaction sequence number is output to the mobile device M and the second card-not-present transaction sequence number is output to the communication device 20. In this embodiment, the first card-not-present transaction sequence number and the second card-not-present transaction sequence number may be a payment sequence number.

Through the above structure, the cardless transaction system and method disclosed in this case can perform the first verification of the user's identity information through the bank server, perform the second verification by comparing the two cardless transaction serial numbers, and then perform the third verification through biometrics. In this way, it can be ensured that the user's personal information, the mobile device used, and the user himself must comply with the verification process, so that cross-bank or cross-platform secure transactions can be completed without using a bank card. In addition, this case can prevent the communication between the mobile device and the communication device from being interfered with through a shielding device, and can also prevent users from performing cardless transactions on their accounts according to fraudulent instructions.

Although the present invention is disclosed as above with the aforementioned embodiments, it is not intended to limit the present invention. Any changes and modifications made within the spirit and scope of the present invention are within the scope of patent protection of the present invention. Please refer to the attached patent application for the scope of protection defined by the present invention.

1,1’,1”: Cardless transaction system 10: Bank server 20: Communication device 21: First communication device 22: Second communication device 30: Processing control device 40: Biometric verification device 50: ATM 60: Shielding device M: Mobile device M1: First mobile device M2: Second mobile device I: Ministry of Interior database P: Shopping platform S101~S111: Steps

Fig. 1 is a block diagram of a cardless transaction system according to an embodiment of the present invention. Fig. 2 is a flow chart of a cardless transaction method according to another embodiment of the present invention. Fig. 3 is a block diagram of a cardless transaction system according to another embodiment of the present invention. Fig. 4A is a schematic diagram of the operation process of a cardless transaction system according to another embodiment of the present invention. Fig. 4B is another schematic diagram of the operation process of a cardless transaction system according to another embodiment of the present invention. Fig. 4C is another schematic diagram of the operation process of a cardless transaction system according to another embodiment of the present invention. Fig. 5 is a block diagram of a cardless transaction system according to another embodiment of the present invention. Fig. 6 is a block diagram of a cardless transaction system according to an embodiment of the present invention. FIG. 7 is another block diagram of a card-not-present transaction system according to an embodiment of the present invention.

1: Card-free transaction system

10: Bank server

20: Communication device

30: Processing control device

40: Biometric verification device

50: ATM

Claims (10)

A card-not-present transaction system comprises: A bank server, used to obtain an identity data and a transaction data from a first mobile device, and after performing an identity verification on the identity data, provide a first card-not-present transaction sequence number to the first mobile device and output a second card-not-present transaction sequence number according to the transaction data, wherein the first card-not-present transaction sequence number matches the second card-not-present transaction sequence number; A communication device, signal-connected to the bank server, used to receive a transaction sequence number to be verified from a second mobile device, and receive the second card-not-present transaction sequence number from the bank server; A processing control device, connected to the communication device, used to receive the transaction sequence number to be verified and the second card-not-present transaction sequence number from the communication device, and determine whether the transaction sequence number to be verified matches the second card-not-present transaction sequence number to generate a first verification message; A biometric verification device, connected to the processing control device, for receiving the first verification message and performing a biometric verification on a user to generate a second verification message; and an ATM, connected to the processing control device, for performing a card-not-present designated transaction according to the second card-not-present transaction sequence number. The card-free transaction system as described in claim 1 further includes a shielding device having a accommodating space, and the communication device is disposed in the accommodating space. The card-not-present transaction system as described in claim 2 further includes a second communication device, which is disposed outside the shielding device and connected to the communication device located inside the shielding device, and the signal is connected to the bank server. A card-not-present transaction system as described in claim 1, wherein the bank server is further used to connect to a Ministry of the Interior database to obtain multiple user identity data, and compare the identity data with the user identity data to perform the identity verification. A card-not-present transaction system as described in claim 1, wherein the bank server is further used to connect to a shopping platform and compare the transaction information with multiple registered transaction data stored in the shopping platform. A card-not-present transaction method, comprising: Using a bank server to receive an identity data and a transaction data from a first mobile device; Using the bank server to perform an identity verification on the identity data; When the identity verification instruction is passed, the bank server provides a first card-not-present transaction serial number to the first mobile device according to the transaction data and outputs a second card-not-present transaction serial number to a communication device, wherein the first card-not-present transaction serial number matches the second card-not-present transaction serial number; Using the communication device to receive a transaction serial number to be verified from a second mobile device and transmit it to a processing control device; Using the processing control device to determine whether the transaction serial number to be verified matches the second card-not-present transaction serial number; When the transaction serial number to be verified matches the second card-not-present transaction serial number, the processing control device generates a first verification message and transmits the first verification message to a biometric verification device; The biometric verification device performs a biometric verification on a user; When the biometric verification instruction passes, the biometric verification device generates a second verification message and returns it to the processing control device; The processing control device transmits the second card-not-present transaction serial number to an ATM; and The ATM performs a card-not-present designated transaction according to the second card-not-present transaction serial number. The card-not-present transaction method as described in claim 6, wherein the first mobile device is disposed outside a shielding device, the communication device and the second mobile device are disposed inside the shielding device, and when the identity verification instruction is passed, the bank server provides the first card-not-present transaction serial number to the first mobile device according to the transaction data and outputs the second card-not-present transaction serial number to the communication device, comprising: When the identity verification instruction is passed, the bank server transmits the second card-not-present transaction serial number to the communication device via a signal line. The cardless transaction method as described in claim 6, wherein the communication device is a one-to-one communication device, the first mobile device, the communication device and the second mobile device are arranged in the shielding device, and the bank server receives the identity data and the transaction data from the first mobile device, including: The bank server receives the identity data and the transaction data from the first mobile device through the first communication device and a second communication device connected to the first communication device by signal; and When the identity verification instruction is passed, the bank server provides the first cardless transaction serial number to the first mobile device according to the transaction data and outputs the second cardless transaction serial number to the communication device, including: When the identity verification instruction is passed, the bank server transmits the second card-not-present transaction serial number to the first communication device via the second communication device. The cardless transaction method as described in claim 6 further comprises: Using the bank server to obtain multiple user identity data from a Ministry of the Interior database; wherein the identity verification comprises comparing the identity data with the user identity data using the bank server. The card-not-present transaction method as described in claim 6, wherein providing the first card-not-present transaction serial number to the first mobile device and outputting the second card-not-present transaction serial number to the communication device according to the transaction data comprises: Obtaining multiple registered transaction data from a shopping platform; Comparing the transaction data and the registered transaction data to generate the first card-not-present transaction serial number and the second card-not-present transaction serial number; Outputting the first card-not-present transaction serial number to the first mobile device; and Outputting the second card-not-present transaction serial number to the communication device.

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