A secure intelligent POS system and its control method

Abstract

The present invention relates to the technical field of POS machines, and discloses a secure intelligent POS system and its control method, which includes: The POS machine system is interconnected with the information card system through a communication transmission system. The POS machine system includes a main control module, an interaction module, an image acquisition module, and a display module. The display module is mainly a touch screen, which is equipped with a display software interface and an operation software interface to perform the payment process of the information card, operate the software interface to achieve the interconnection and resource sharing of multiple POS machines of the same model, and transmit the matching information on the information card to the POS machines of the same model so that the information card can be read and used on the POS machines of this model. The information card cannot be used on other types of POS machines, avoiding the leakage of information card data and the leakage of user information, ensuring the security of information card use. The POS machine adopts the control of a self-destructive chip, which will create a self-destruction channel for the chip payment of the lost information card to prevent payment and fund transfer, etc.

Description

Technical Field

[0001] The present invention relates to the technical field of POS machines, and particularly relates to a secure intelligent POS system and its control method. Background Art

[0002] With the rapid development of technology and society, more and more technological products have entered people's lives. In recent years, mobile payment has gradually penetrated into people's financial payments. With the continuous popularization of mobile payment in the financial payment field, card swiping payment or NFC payment has spread throughout major shopping malls or every corner of the city. Card swiping payment requires a POS machine (Point of sales) with a card slot, and NFC payment requires a POS machine with NFC. Currently, there has emerged a POS machine that combines card swiping and NFC functions, which is an updated product of the POS machine and greatly facilitates people's financial payments.

[0003] However, this existing POS machine has great defects in terms of security protection, such as single password recognition, insecure account protection, etc.; traditional POS machines only have digital password login. For people who haven't used their payment cards for a long time, it is easy to forget the password. If the password is entered multiple times, the payment card will be locked, and various methods are needed to unlock it; for traditional payment cards, some may not have password protection. If they are lost, the payment card may be misused; traditional POS machines need to be connected to the network at all times to perform payment operations. Without a network or with a very weak network signal, there will be a failure in deducting money; traditional POS machines operate singly or share the operation by connecting to the network at all times, which will result in some information asymmetry or the information cannot be transmitted in time, etc.

[0004] Therefore, in view of the above problems, the existing POS machines need to be further improved. Summary of the Invention

[0005] The purpose of the present invention is to overcome the deficiencies between the existing POS machines and information cards, such as single password recognition of POS machines, insecure accounts, easy forgetting of passwords, the need for constant network support, and single operation, etc. A secure intelligent POS system and its control method are proposed.

[0006] A secure intelligent POS system, the POS system includes: a POS machine system, a communication transmission system, and an information card system. The POS machine system is interconnected with the information card system and / or another POS machine system through the communication transmission system;

[0007] The POS machine system includes a main control module, an interaction module, an image acquisition module, and a display module. The main control module is electrically connected to the image acquisition module, the interaction module, and the display module respectively. The interaction module cooperates with the communication transmission system and is used for information sharing and interaction between the POS machine system and the information card system and / or another POS machine system;

[0008] Among them, the image acquisition module transmits the acquired image information to the main control module through a connection line. External information exchanges information with the main control module through the interaction module. The main control module transmits a display signal to the display module, and the display module includes an operation touch screen, display software icons, display software pages, and display bill information, etc.;

[0009] Among them, the image acquisition module includes a fingerprint processing module and a scanning module. The image output end of the scanning module is electrically connected to the image end of the main control module, and the fingerprint image output end of the fingerprint processing module is electrically connected to the image end of the main control module. The fingerprint processing module selects an integrated semiconductor sensor and a fingerprint algorithm chip as an integrated fingerprint processing module;

[0010] The information card system includes a card main control module, a magnetic stripe module, and an NFC card module. The reading end of the magnetic stripe module is electrically connected to the reading end of the card main control module, and the wireless end of the NFC card module is electrically connected to the wireless end of the card main control module. The magnetic stripe module and the NFC card module perform information sharing and interaction with the interaction module on the POS machine system through the communication transmission system.

[0011] Further, the interaction module adopts a multi-channel interaction module, which is used for partial or all information sharing and interaction between multiple groups of POS machine systems and / or information card systems of the same type.

[0012] Further, the scanning module adopts an embedded image reader and uses a CMOS sensor with anti-shake, high aiming, and high definition.

[0013] Further, the communication transmission system is a transmission medium for carrying signal communication, such as a card-swipe contact transmission method and medium, an induction chip transmission method and medium, and a near-field NFC induction transmission method and medium, etc.; or Bluetooth, wireless WIFI, 4G, 5G, etc.

[0014] Further, the main control module includes a central processing module, an identification and comparison module, a storage module, an encryption module, and a decryption module. The identification end of the central processing module is electrically connected to the identification end of the identification and comparison module. The identification and comparison module is used to record the first input information and compare the information input for the second time and above with the first input information. The storage end of the storage module is electrically connected to the storage end of the central processing module. The storage module is used to store information and / or data. For example, the storage module is used to store the external information of the POS machine, set the information of the POS machine, and download the information of the POS machine, etc. The encryption end of the encryption module is electrically connected to the encryption end of the central processing module. The encryption module is used to encrypt the system of the POS machine and encrypt the information card. The decryption end of the decryption module is electrically connected to the decryption end of the central processing module. The decryption module is used to decrypt the system of the POS machine and decrypt the information card. The central processing module is also electrically connected to the image acquisition module, the interaction module, and the display module respectively.

[0015] Further, the identification and comparison module is also used to identify the information card information, identify the payment password, and identify the POS machine, etc.

[0016] Further, the central processing module includes a CPU module and an MCU module. The CPU module is electrically connected to the identification and comparison module, the storage module, the encryption module, the decryption module, the image acquisition module, the interaction module, the display module, and the MCU module respectively.

[0017] Further, the main control module on the POS machine system also includes a self-destruction module. The self-destruction control end of the central processing module is electrically connected to the self-destruction end of the self-destruction module. The self-destruction module cooperates with the interaction module and the communication transmission system and is used to send self-destruction instruction information to the information card system. For example, the self-destruction module is used to input the self-destruction program into the information card for a faulty information card or a problematic information card, etc.

[0018] Further, the interaction module includes a signal transceiver module, a card insertion module, an NFC module, and an interface module. The signal transceiver module, the card insertion module, the NFC module, and the interface module are electrically connected to the main control module respectively. The NFC module is used for information sharing between the information card and the POS machine. The NFC module emits or receives NFC signals. The card insertion module is used to read and / or write the information of the information card, which includes the holder identity information of the information card, the password information of the information card, the account information of the information card, the financial information of the information card, and the payment / deposit information of the information card. The signal transceiver module is used for the transceiver of wired or wireless communication of the POS machine. The interface module is used for information exchange between the outside and the POS machine, etc.

[0019] Further, the interface module includes a power interface, a data USB interface, and a wired communication interface. The power interface, the data USB interface, and the wired communication interface are respectively electrically connected to the main control module. The power interface is used to connect to an external power cord, an internal power supply terminal, and a power supply terminal of a storage battery, etc. The data USB interface is used to connect external data and internal data, etc. The wired communication port is used to connect to an external wired network.

[0020] Further, the POS system further includes a printing module and a warning module. The printing module and the warning module are respectively electrically connected to the main control module. The printing module is used to print payment bills and / or print information on information cards, etc. The warning module is used to give an alarm prompt for a misoperated POS machine and / or a mismatched information card, and is also used to warn of error information recognized by the POS machine.

[0021] Further, the card main control module on the information card system includes a core processing module, a core storage module, a download module, and a core identification and comparison module. The storage end of the core processing module is electrically connected to the storage end of the core storage module. The reading end of the core processing module is electrically connected to the reading end of the magnetic stripe module. The identification end of the core identification and comparison module is electrically connected to the identification end of the core processing module. The wireless end of the core processing module is electrically connected to the NFC card module. The download end of the download module is electrically connected to the download end of the core processing module.

[0022] Further, the card main control module on the information card system includes a self-destruction chip module. The self-destruction chip module is used to receive self-destruction instruction information sent by the self-destruction module in the main control module on the POS system, and execute the instruction information action to self-destruct the information card.

[0023] Further, the download module is used to download required software, files, and / or data, etc.

[0024] Further, the core storage module is used to store information data of the information card, etc.

[0025] Further, the magnetic stripe module is used to interact information data between the information card and the card insertion module of the POS machine.

[0026] Further, the core identification and comparison module is used to process, identify, and compare information data between the POS machine and the information card, etc.

[0027] Further, the NFC card module is used to receive / send NFC signals of the information card.

[0028] Further, the fingerprint processing module preferably uses a ZN-105 chip.

[0029] With such a setting, the ZN-105 chip is used. It is an integrated fingerprint processing module that combines a semiconductor sensor and a fingerprint algorithm chip, featuring small size, low power consumption, and simple interfaces. The module has high reliability, good adaptability to wet and dry fingers, and fast fingerprint search speed. The ZN-105 chip can also upload and download fingerprint feature information, facilitating fingerprint recognition for multiple people and multiple devices.

[0030] Among them, through the semiconductor imaging principle, the skin on the inner surface of the finger has uneven lines, which will form various fingerprint images. The lines of the skin are different in patterns, breakpoints, and intersections, and they are called "feature points" in information processing. The features of each finger are different, that is to say, they are unique. Relying on this uniqueness, a person can be associated with their fingerprint. By comparing their fingerprint with the pre-stored fingerprint, their true identity can be verified.

[0031] With such a setting, the fingerprint processing module of the POS machine is used. It collects, analyzes, and compares fingerprints through special semiconductor conversion devices and image processing technologies, and can automatically, quickly, and accurately identify personal identities. The fingerprint processing module mainly includes processes such as fingerprint image collection, fingerprint image processing, feature extraction, and comparison and matching of feature values.

[0032] Furthermore, the scanning module includes a scanning control board and a scanning camera. The scanning camera is electrically connected to the scanning control board. The scanning camera is preferably an LV4300 embedded barcode reader or an LV4500R embedded two-dimensional scanner.

[0033] Furthermore, the self-destruction chip module is used to self-destruct and cut off the output signal line of the core processing module of the information card system, and block the external transmission of information.

[0034] Furthermore, the self-destruction chip module includes a self-destruction circuit. A fusing resistance wire is provided on the self-destruction circuit. The fusing resistance wire is made of a nanoscale metal material. When a high voltage is applied to it, the fusing resistance wire melts, preventing the data on the information card from leaking, and blocking the reading and payment connection between the information card and the POS machine.

[0035] Further, a section of semiconductor silicon coating can also be deposited on the output signal connection line of the self-destruction circuit. A small section of area on the semiconductor silicon coating is selected for depositing a layer of copper azide material. Under the control of the core processing module and the self-destruction chip module, a large current is input to the connection line here. When this metal connection line receives the large current, it will be transmitted to the semiconductor silicon material. Due to the heat generated by the semiconductor silicon material, it will undergo the change of silicon solid - silicon liquid - silicon plasma, and high-temperature silicon plasma will be released, and then the heat will be transferred to the copper azide coating. The copper azide will have an explosion phenomenon, and then break this connection line.

[0036] Further, the connection line is selected as a copper material connection line.

[0037] Further, the self-destruction chip module further includes a radio frequency circuit. The radio frequency circuit is turned on through the signal fed back by the self-destruction circuit, and the information data on the core storage module of the information card is wirelessly transmitted to the POS machine system, and the POS machine system stores the information data of the information card.

[0038] With such a setting, using the self-destruction chip module can ensure that the lost information card cannot complete the payment function, and at the same time, the information data of the lost information card can also be transmitted back to the POS machine, which is convenient for subsequent data collation and information card information retention, etc.

[0039] Further, the card insertion module is also electrically connected to the MCU module, and the NFC module is also electrically connected to the MCU module.

[0040] Further, the card insertion module includes a magnetic head unit and a magnetic card unit. The plug unit is electrically connected to the magnetic card unit, and the magnetic card unit is electrically connected to the MCU module.

[0041] Further, the self-destruction module and the self-destruction chip module cooperate with each other and are connected to each other through the magnetic stripe module and / or the NFC module.

[0042] With such a setting, when the self-destruction module receives the error information of the information card, it will send a self-destruction instruction to the information card and read the stored information data on the information card. The self-destruction chip module receives the instruction, cuts off the payment channel, and sends a wireless instruction to transmit the information data back to the POS machine.

[0043] Further, a control method for a secure intelligent POS system, the control method includes:

[0044] S1: System startup:

[0045] The POS machine system is connected to an external power supply, an internal power supply terminal, and a power supply terminal of an internal battery through a power interface to supply power to the POS machine system and charge the battery, turn on the entire POS machine system, and display the POS machine interface on the touch screen;

[0046] S2: Software program installation:

[0047] Connect the POS machine system to a wireless WIFI network or a wired network. After the network connection is smooth, install the required software programs in the POS machine. The required software programs will be downloaded and installed through the program download function and stored in the storage module. The central processing module will constantly read and write data to the storage module;

[0048] S3: Run the software program:

[0049] Click on the installed software program icon to enter the corresponding software interface, and operate the software and / or the online connection of the POS machine system and / or the information interaction and sharing between the POS machine system and the information card system by operating the touch screen;

[0050] S4: Information card encryption:

[0051] A. Encrypt the information card system through the POS machine system. The NFC card module on the information card system communicates with the NFC module on the POS machine system through near-field wireless communication. The central processing module on the POS machine system sends a password instruction to the NFC module and then to the NFC card module on the information card system. The password instruction received by the NFC card module is transmitted to the core processing module and then stored in the core storage module to achieve the encryption of the information card system;

[0052] Or B. Encrypt the information card system through the POS machine system. The magnetic stripe module on the information card system communicates with the card insertion module on the POS machine system through contact communication. The central processing module on the POS machine system sends a password instruction to the card insertion module and then to the magnetic stripe module on the information card system. The password instruction received by the magnetic stripe module is transmitted to the core processing module and then stored in the core storage module to achieve the encryption of the information card system;

[0053] S5: Information card decryption:

[0054] C. Decrypt the information card system through the POS machine system. The POS machine system reads the information on the information card system through the near-field communication of NFC, decrypts the information card system through the decryption module of the POS machine system, then identifies and matches the information card system through the identification and comparison module, and then transmits it to the central processing module. If it is correct, the reading is performed, and the information is processed and executed through the central processing module. If it is incorrect, the decryption of the information card system is not performed, and at the same time, a warning is given through the warning module;

[0055] Or D. Decrypt the information card system through the POS machine system. The POS machine system reads the information on the information card system through the contact communication of the card insertion module, decrypts the information card system through the decryption module of the POS machine system, then identifies and matches the information card system through the identification and comparison module, and then transmits it to the central processing module. If it is correct, the reading is performed, and the information is processed and executed through the central processing module. If it is incorrect, the decryption of the information card system is not performed, and at the same time, a warning is given through the warning module;

[0056] S6: Payment settings:

[0057] Perform communication transmission on the information card system through the POS machine system. The information card system performs information interconnection and sharing with the corresponding card insertion module or NFC module of the POS machine system through the magnetic stripe module or NFC card module, and perform payment password settings and / or fingerprint payment settings and / or image payment settings on the information card system and the POS machine system. Among them, the fingerprint payment setting is to collect fingerprint information through the fingerprint processing module, process the collected fingerprint information through the central processing module and store it in the storage module, and further send the collected fingerprint information to the information card system for storage. The image payment setting is to collect image information through the scanning module, process the collected image information through the central processing module and store it in the storage module, and further send the collected image information to the information card system for storage;

[0058] S7: Reading of the information card:

[0059] The POS machine system performs information interconnection and sharing with the corresponding magnetic stripe module or NFC card module of the information card system through the card insertion module or NFC module, reads the information data of the information card system by the POS machine system, and displays it on the touch screen;

[0060] S8: Information card payment:

[0061] The information card system is interconnected and shares information with the card insertion module or NFC module of the corresponding POS machine system through the magnetic stripe module or NFC card module. Then, an input interface for payment password and / or fingerprint payment and / or image payment appears on the display module. After entering the correct payment password or fingerprint or image, the payment is made;

[0062] S9: Interconnection of POS machines of the same model:

[0063] The POS machine system interconnects and shares information of multiple POS machines of the same model through the interaction module and the communication transmission system, enabling offline connection. When there is a network, resource information is shared;

[0064] S10: Self-destruction of the information card:

[0065] For canceling the information card system, an operation is performed on the POS machine system interface. Through the central processing module and the self-destruction module, a self-destruction instruction is generated. Through the cooperation of the interaction module and the communication transmission system, it is shared with other POS machine systems. When the information card system and the POS machine system perform card insertion reading or NFC reading, the self-destruction instruction will be read, and the self-destruction chip module of the information card system will self-destruct, and the information card system becomes an invalid information card;

[0066] Or, when the information card is lost, during the interaction between the information card system and the POS machine system, in terms of identity recognition, a mismatch occurs. The central processing module and the self-destruction module of the POS machine system send a self-destruction instruction to the information card system, and the self-destruction chip module in the information card system cuts off the reading or payment channel;

[0067] S11: Offline payment and online deduction:

[0068] The POS machine system has a temporary storage function and can perform payments both offline and online. It can smoothly interconnect with the information card system and store the payment information in the storage module. When there is a network, the payment information is sent to the bank end in a timely manner for deduction.

[0069] Furthermore, when the self-destruction chip module of the information card system self-destructs or cuts off the reading or payment channel in S10, it will wirelessly share its information data to the POS machine background through the radio frequency module.

[0070] Furthermore, after fingerprint information is entered on one POS machine system, the fingerprint feature information database is uploaded to its background through WiFi or mobile network, and then downloaded by the background to other POS machine systems of the same model, thus realizing fingerprint recognition on multiple POS machines.

[0071] Further, after fingerprint information is input into a POS machine system, the fingerprint feature information database is copied to other POS machine systems of the same model through an information card, so as to realize fingerprint recognition on multiple POS machines.

[0072] Further, a personal dedicated NFC card storing fingerprint feature information can be issued on the POS machine. In addition to common stored contents such as card number, user information, and amount, the fingerprint feature information of the cardholder is also stored to ensure that the card can only be used by the cardholder himself / herself. The user holding this card can use it on any POS machine of the same model. By swiping the card first, common stored contents such as the card number and fingerprint feature information will be read for application. Among them, the fingerprint feature information is transmitted to the fingerprint processing module, and then the user can press the fingerprint for identification. The reading and writing of the personal information card by the POS machine will be restricted by password verification, and the stored fingerprint feature data will also be encrypted.

[0073] Beneficial effects

[0074] The present invention can realize the interconnection and resource sharing of multiple POS machines, solve the troubles brought by easy forgetting of passwords or loss of information cards, as well as incorrect payments, etc. The POS machine system is interconnected with the information card system through a communication transmission system. The POS machine system includes a main control module, an interaction module, an image acquisition module, and a display module. The display module is mainly a touch screen, equipped with a display software interface and an operation software interface to perform the payment process of the information card, operate the software interface, realize the interconnection and resource sharing of multiple POS machines of the same model, and transmit the matching information on the information card to the POS machines of the same model so that the information card can be read and used on the POS machines of this model. This information card cannot be used on other types of POS machines, avoiding the leakage of information card data and the leakage of user information, ensuring the security of information card use. The POS machine adopts the control of a self-destructive chip, and will perform a self-destruction channel for the chip payment of the lost information card due to incorrect password information to prevent payment and fund transfer. At the same time, the resources of the information card will be transmitted to the POS machine through wireless signals, and the information of the information card can be retained; the POS system also has a self-destruction function, which can self-destruct in time to cut off the information reading and ensure the security of personal information. Description of the drawings

[0075] Figure 1 It is a schematic diagram of a safe and intelligent POS system of the present invention.

[0076] Figure 2 It is a schematic diagram of the POS machine system of a safe and intelligent POS system of the present invention.

[0077] Figure 3 It is a schematic diagram of the information card system of a safe and intelligent POS system of the present invention.

[0078] Figure 4 Schematic diagram of the circuit of the NFC module of a secure intelligent POS system according to the present invention.

[0079] Figure 5 Schematic diagram of the circuit of the first MCU chip unit of a secure intelligent POS system according to the present invention.

[0080] Figure 6 Schematic diagram of the circuit of the card insertion module of a secure intelligent POS system according to the present invention.

[0081] Figure 7 Schematic diagram of the circuit of the second MCU chip unit of a secure intelligent POS system according to the present invention.

[0082] Figure 8 Schematic diagram of the internal structure of the information card of a secure intelligent POS system according to the present invention.

[0083] Figure 9 Schematic diagram of a part of the circuit board of the card circuit board area of a secure intelligent POS system according to the present invention.

[0084] Figure 10 Schematic diagram of the information card of a secure intelligent POS system according to the present invention.

[0085] Figure 11 SEM image of the layer structure of the cutting unit of a secure intelligent POS system according to the present invention.

[0086] Figure 12 SEM image of the surface of copper azide of the cutting unit of a secure intelligent POS system according to the present invention.

[0087] Description of the drawings: 01, POS machine system; 02, communication transmission system; 03, information card system; 10, central processing module; 11, warning module; 12, printing module; 13, downloading module; 14, card insertion module; 15, NFC module; 16, self-destruction module; 17, interface module; 18, signal transceiver module; 19, interaction module; 110, display module; 111, scanning module; 112, identification and comparison module; 113, encryption module; 114, decryption module; 115, storage module; 116, battery module; 117, image acquisition module; 118, fingerprint processing module; 20, core processing module; 21, core identification and comparison module; 22, core storage module; 23, magnetic stripe module; 24, card downloading module; 25, self-destruction chip module; 26, NFC card module; 31, external reading chip area; 32, card circuit board area; 41, cutting unit; 42, core processing unit; 43, external reading chip. Detailed implementation manners

[0088] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0089] A safe and intelligent POS system provided by the present invention, the POS system includes: a POS machine system 01, a communication transmission system 02, and an information card system 03. The POS machine system 01 is interconnected with the information card system 03 and / or another POS machine system 01 through the communication transmission system 02;

[0090] Among them, the POS machine system 01 includes a central processing module 10, an identification and comparison module 112, a storage module 115, an encryption module 113, a decryption module 114, a battery module 116, a self-destruction module 16, a download module 13, a printing module 12, a warning module 11, an interaction module 19, an image acquisition module 117, and a display module 110. The identification and comparison module 112, the storage module 115, the encryption module 113, the decryption module 114, the battery module 116, the self-destruction module 16, the download module 13, the printing module 12, the warning module 11, the interaction module 19, the image acquisition module 117, and the display module 110 are respectively electrically connected to the central processing module 10. The download module 13 is used to download required software, files, and / or data, etc.;

[0091] The interaction module 19 includes a signal transceiver module 18, a card insertion module 14, an NFC module 15, and an interface module 17. The signal transceiver module 18, the card insertion module 14, the NFC module 15, and the interface module 17 are respectively electrically connected to the central processing module 10; the interface module 17 includes a power interface, a data USB interface, and a wired communication interface. The power interface, the data USB interface, and the wired communication interface are respectively electrically connected to the central processing module 10;

[0092] The image acquisition module 117 includes a fingerprint processing module 118 and a scanning module 111. The scanning module 111 and the fingerprint processing module 118 are respectively electrically connected to the central processing module 10. The fingerprint processing module 118 selects an integrated semiconductor sensor and a fingerprint algorithm chip as an integrated fingerprint processing module; the scanning module 111 uses an embedded image reader and uses an anti-shake, high-aiming, and high-definition CMOS sensor;

[0093] Among them, the fingerprint processing module 118 preferably uses a chip of model ZN-105. The scanning module 111 includes a scanning control board and a scanning camera, and the scanning camera is electrically connected to the scanning control board. The scanning camera preferably uses an LV4300 embedded bar code reader or an LV4500R embedded two-dimensional scanner.

[0094] The display module 110 includes an operation touch screen, display software icons, display software pages, display bill information, etc.

[0095] Among them, the central processing module 10 includes a CPU module and an MCU module, and the CPU module is electrically connected to the MCU module;

[0096] Specifically, in the POS machine system 01, the CPU chip in the CPU module is electrically connected to the first MCU chip unit and the second MCU chip unit in the MCU module, which constitutes the central processing function of the POS machine system 01. The radio frequency end of the first MCU chip unit is connected to the radio frequency end of the NFC module 15, and the reading end of the second MCU chip unit is connected to the reading end of the card insertion module 14;

[0097] Among them, the circuit diagram of the NFC module 15 is in accordance with Figure 4As shown in the figure, it includes: NFC port, resistor R12, resistor R13, resistor R14, capacitor C25, chip U1, quartz crystal oscillator X1, capacitor C21, capacitor C20, capacitor C17, capacitor C16, capacitor C22, capacitor C24, inductor L3, capacitor C23, resistor R4, resistor R9, capacitor C15, capacitor C7, inductor L1, inductor L2, resistor R3, capacitor C6, capacitor C13, capacitor C14, capacitor C12, capacitor C5, resistor R8, NFC antenna J3, capacitor C11, capacitor C10, capacitor C3, capacitor C4, capacitor C2, capacitor C9, capacitor C1, capacitor C8, resistor R1, resistor R2, resistor R6 and resistor R7. The NFC antenna has 6 terminals. The "1" terminal of the NFC antenna is connected in parallel to the "TX1" terminal of chip U1 and inductor L1. The "2" terminal of the NFC antenna and the "TVSS" terminal of chip U1 are grounded together. The "3" terminal of the NFC antenna is connected in parallel to the "TX2" terminal of chip U1 and inductor L2. The "4" terminal of the NFC antenna is connected in parallel to the "VMID" terminal of chip U1 and capacitor C15. The "5" terminal of the NFC antenna is connected in parallel to the "RXN" terminal of chip U1 and resistor R4. The "6" terminal of the NFC antenna is connected in parallel to the "RXP" terminal of chip U1, resistor R9 and capacitor C14. The other end of resistor R9 is connected in parallel to the "VMID" terminal of chip U1 and the other end of resistor R4. Capacitor C15 is grounded. The other end of capacitor C14 is connected to resistor R8. The other end of resistor R8 is connected in parallel to the other end of inductor L2, capacitor C10 and the parallel capacitors C13 / C12 / C11. The other end of capacitor C11 is connected in parallel to the capacitors C9 / C8, resistors R6 / R7 and the other end of capacitor C10. The other ends of resistor R6 and resistor R7 are connected together. The other ends of the parallel capacitors C13 / C12 and the other ends of the parallel capacitors C9 / C8 and the parallel capacitors C2 / C1 are grounded together. The parallel capacitors C6 / C5 and the parallel capacitors C2 / C1 are grounded together. The other ends of the parallel capacitors C6 / C5 are connected in parallel to resistor R3, the other end of inductor L1, capacitor C3 and capacitor C4. The other end of resistor R3 is connected to capacitor C7. The other end of capacitor C7 is connected to the "RXN" terminal of chip U1. The other ends of the parallel capacitors C3 / C4 are connected in parallel to the other ends of the capacitors C2 / C1 and resistor R1 and resistor R2. The other end of resistor R1 is connected to the other end of resistor R2. The "AVDD" terminal of chip U1 is connected to capacitor C23. The other end of capacitor C23 is grounded. The "VDD" terminal of chip U1 is connected in parallel to 3.3V and capacitor C24. The "DVDD" terminal of chip U1 is connected to capacitor C22. The other end of capacitor C22 and the other end of capacitor C24 are grounded together. The "TVDD" terminal of chip U1 is connected in parallel to capacitor C17, capacitor C16 and inductor L3. The other end of inductor L3 is connected to 3.3V, the other ends of capacitor C17 and capacitor C16 are grounded together; the "XDAL1" terminal of chip U1 is connected in parallel with quartz crystal oscillator X1 and capacitor C20, the "XDAL2" terminal of chip U1 is connected in parallel with the other end of quartz crystal oscillator X1 and capacitor C21, and capacitor C20 and capacitor C21 are grounded together; the "IF0, IF1, IF2, IF3, IRQ" terminals of chip U1 are connected to the MCU module, the "PDOWN" terminal of chip U1 is also connected to the MCU module, the "PVDD" terminal of chip U1 is connected in parallel with resistor R12, resistor R13, resistor R14 and capacitor C25, the other end of capacitor C25 is grounded together with the "OUT4" of chip U1, the other end of resistor R14 is connected to the "OUT5" of chip U1, the other end of resistor R13 is connected to the "IRQ" of chip U1, and the "VSS" of chip U1 is grounded; among them, the model of chip U1 is MFRC631 chip.

[0098] The circuit diagram of the first MCU chip unit connected to the NFC module 15, as shown in Figure 5 shown, it includes: NFC port, capacitor C27, capacitor C28, capacitor C33, capacitor C34, capacitor C30, resistor R15, LED1, resistor R16, chip U4, quartz crystal oscillator X2, capacitor C31, capacitor C32, capacitor C29. The "PA0, PB1, PB2, PB3, PB4, PB5" terminals of chip U4 are connected to the NFC port, and the NFC port is connected to the "IF0, IF1, IF2, IF3, IRQ" terminals and the "PDOWN" terminal of chip U1 of the NFC radio frequency processing circuit. The "VSSA, VSS" terminals of chip U4 and one end of capacitor C29 are grounded together, the other end of capacitor C29 is connected to 3.3V. The "CLDO" terminal of chip U4 is connected to capacitor C31 and C32 together, and the other ends of capacitor C31 and C32 are grounded together. The "VDD" terminal of chip U4 is connected to 3.3V together with capacitor C27 and capacitor C28, the "VSS" terminal of chip U4 and the other ends of capacitor C27 and capacitor C28 are grounded together. The "nRST" terminal of chip U4 is connected to resistor R15 and capacitor C30 together, the other end of capacitor C30 is grounded, the other end of resistor R15 and the positive pole of LED1 are connected to 3.3V together, the negative pole of LED1 is connected to resistor R16, and the other end of resistor R16 is connected to the "PA9" terminal of chip U4. The "PB13" terminal of chip U4 is connected to quartz crystal oscillator X2 and capacitor C33 together, the "PB14" terminal of chip U4 is connected to quartz crystal oscillator X2 and capacitor C34, and the other ends of capacitor C33 and capacitor C34 are grounded together.

[0099] The circuit diagram of the card insertion module 14, as shown in Figure 6As shown in the figure, it includes: a magnetic head J1, a chip U2, a capacitor C12, a resistor R2, and a resistor R3. The "1st terminal, 3rd terminal, and 5th terminal" of the magnetic head J1 are commonly connected to the "VCOM" terminal of the chip U2. The "2nd terminal" of the magnetic head J1 is connected to the "A" terminal of the chip U2. The "4th terminal" of the magnetic head J1 is connected to the "B" terminal of the chip U2. The "6th terminal" of the magnetic head J1 is connected to the "C" terminal of the chip U2. The "7th terminal, 8th terminal, and 9th terminal" of the magnetic head J1 are commonly grounded. The model of the chip U2 is the HET1601 chip. The "VDD" terminal of the chip U2 is commonly connected to 3.3V with the capacitor C12, the resistor R2, and the resistor R3. The other end of the resistor R3 is connected to the "STROBE" terminal of the chip U2. The other end of the resistor R2 is connected to the "DATA" terminal of the chip U2. The capacitor C12 and the "VSS" terminal of the chip U2 are commonly grounded. The "STROBE" terminal and the "DATA" terminal of the chip U2 are respectively connected to the MCU chip U3 of the card insertion module.

[0100] The circuit diagram of the second MCU chip unit connected to the card insertion module 14, in accordance with Figure 7As shown in the figure, it includes: chip U3, capacitor C4, capacitor C1, capacitor C2, capacitor C3, capacitor C6, capacitor C7, resistor R1, capacitor C5, capacitor C8, capacitor C9, capacitor C10, capacitor C11, chip U5 and quartz capacitor X3. The "AVSS" terminal of chip U3 is grounded, the "AVDD" terminal of chip U3 is connected to 3.3V, the "VO" terminal of chip U3 and capacitor C8 are commonly connected to 3.3V, the other end of capacitor C8 is grounded, the "CVSS" terminal of chip U3 is grounded, the "CVCC" terminal of chip U3 is commonly connected to the parallel capacitors C10 / C11 / C9, and the parallel capacitors C10 / C11 / C9 are commonly grounded. The "PA1" terminal, "PA3" terminal, "PB6" terminal and "PB5" terminal of chip U3 are commonly connected to the decoding processing chip U2 of the plug-in card module. The "V33O" terminal of chip U3 is connected to capacitor C5, and the other end of capacitor C5 is grounded. The "PE1" terminal and "HVDD" terminal of chip U3 are commonly connected to 3.3V with the parallel capacitors C1 / C2 / C3, and the other ends of the parallel capacitors C1 / C2 / C3 are grounded. The "PE7" terminal of chip U3 is connected in parallel with resistor R1 and capacitor C4. The other end of resistor R1 is connected to 3.3V, and the other end of capacitor C4 is grounded. The "PE3" terminal of chip U3 is connected in parallel with one end of quartz capacitor X3 and one end of capacitor C6. The other end of capacitor C6 and one end of capacitor C7 are grounded. The other end of quartz capacitor X3 and the other end of capacitor C7 are commonly connected to the "PE2" terminal of chip U3. The "PC5" terminal, "PC6" terminal and "PC7" terminal of chip U3 are commonly connected to the CPU chip. The "CDET" terminal of chip U3 is connected to the "C9-K1" terminal of chip U5. The "CIO" terminal of chip U3 is connected to the "C7-DAT" terminal of chip U5. The "CCLK" terminal of chip U3 is connected to the "C3-CLK" terminal of chip U5. The "CRST" terminal of chip U3 is connected to the "C2-RST" terminal of chip U5. The "CVCC" terminal of chip U3 is connected to the "C1-VCC" terminal of chip U5. The "C10-K2" terminal of chip U5 and the "C5-GND" terminal of chip U5 are commonly grounded. Among them, the model of chip U3 is HT66F4360 chip, and the model of chip U5 is MUP-C816 chip.

[0101] Among them, the communication transmission system 02 selects Bluetooth, wireless WIFI, 4G communication, 5G communication, etc.

[0102] Among them, refer to Figure 10 As shown in the figure, there will be an external reading chip 43 on the appearance diagram of the information card. Refer to Figure 8As shown, inside the information card, there are an externally-readable chip area 31, a loop wire, and a card circuit board 32, which are electrically connected to each other; the information card system 03 includes a card main control module, a magnetic stripe module 23, a self-destruction chip module 25, and an NFC card module 26. The card main control module includes a core processing module 20, a core storage module 22, a card download module 24, and a core identification and comparison module 21. The magnetic stripe module 23, the self-destruction chip module 25, the NFC card module 26, the core storage module 22, the card download module 24, and the core identification and comparison module 21 are respectively electrically connected to the core processing module 20; the card download module 24 is used to download information data transmitted by the POS system, etc., the core storage module 22 is used to store information materials of the information card, the magnetic stripe module 23 is used to interact the information materials of the information card with the card insertion module 14 of the POS machine, the core identification and comparison module 21 is used to process, identify, and compare the information data between the POS machine and the information card, etc., and the NFC card module 26 is used to receive / send the NFC signal of the information card.

[0103] Among them, the self-destruction chip module 25 is used to self-destruct and cut off the output signal line of the core processing module 20 of the information card system 03, and block the external transmission of information materials; the self-destruction chip module 25 includes a self-destruction circuit, and a fuse resistance wire is provided on the self-destruction circuit. The fuse resistance wire is made of a micro-nano metal material. When a high voltage is applied to it, the fuse resistance wire is melted to prevent the information on the information card from leaking out, and block the reading and payment connection between the information card and the POS machine, such as the efuse technology in the integrated circuit process;

[0104] In addition, as shown in Figure 9 shown, the self-destruction circuit can also select to cut off unit 41 at the output signal connection line of the core processing unit 42 in the core processing module 20. At the cut-off unit 41 is where the copper wire is disconnected. A 100μm-thick metal aluminum thin film coating is deposited at the disconnection. The metal aluminum thin film coating is well-connected to the copper wire at this place on the circuit board. Preferably, the width of the metal aluminum thin film coating is the same as the width of the copper wire. A semiconductor silicon coating is deposited on the upper surface of the metal aluminum thin film coating by chemical vapor deposition technology. The semiconductor silicon coating is a single crystal silicon coating of 100μm×100μm×60μm, and the doping concentration in the single crystal silicon coating is 4×10 19 cm -3 of phosphorus element. In the middle area of the semiconductor silicon coating, chemical vapor deposition technology is used to react nano-copper and hydrazoic acid gas and deposit a copper azide coating on the semiconductor silicon coating. The copper azide coating is a thin film coating of 50μm×50μm×20μm. As shown in Figure 11 and 12As shown, in Figure 11 the lower middle layer is a metal aluminum thin film coating, the middle layer is a semiconductor silicon coating, and the upper layer is a copper azide coating. In Figure 12 the prepared copper azide coating will present a reticular fluffy structure, which will enhance its combination with the semiconductor silicon plasma and enhance its cutting effect, etc. It is prepared that a large current can be input to the cutting unit 41 at the disconnection point under the control of the core processing module 20 and the self-destruction chip module 25. When this cutting unit 41 receives a large current, it will be transmitted to the semiconductor silicon material. Due to the heat generated by the semiconductor silicon material, it will experience the change from silicon solid to silicon liquid to silicon plasma, and high-temperature silicon plasma will be released, and then the heat will be transmitted to the copper azide coating. The copper azide will produce an explosion phenomenon, and then break the connection wire to block the information outflow of the information card.

[0105] Among them, the self-destruction chip module 25 further includes a radio frequency feedback circuit. When the core processing module 20 and the self-destruction chip module 25 send out the control signal of the self-destruction chip, the signal will be fed back to the radio frequency feedback circuit at the same time to turn on the radio frequency feedback circuit. Then, the information data on the core storage module 22 on the information card will be wirelessly transmitted to the POS machine system 01, and the POS machine system 01 stores the information data of the information card.

[0106] A control method for a secure intelligent POS system, the control method includes:

[0107] S1: System startup:

[0108] The POS machine system 01 is connected to an external power supply, an internal power supply terminal, and a power supply terminal of an internal battery through a power interface to supply power to the POS machine system 01 and the battery, turn on the entire POS machine system 01, and the display touch screen displays the POS machine interface;

[0109] S2: Software program installation:

[0110] The POS machine system 01 is connected to a wireless WIFI network or a wired network. After the network connection is smooth, the required software programs in the POS machine are installed. The required software programs will be downloaded and installed through the program download function and stored in the storage module 115. The central processing module 10 will constantly read and write data to the storage module 115;

[0111] S3: Run software programs:

[0112] Click on the installed software program icon to enter the corresponding software interface, and operate the software and / or the online connection of the POS machine system 01 and / or the information interaction and sharing between the POS machine system 01 and the information card system 03 by operating the display touch screen;

[0113] S4: Information Card Encryption:

[0114] A. Encrypt the information card system 03 through the POS system 01. The NFC card module 26 on the information card system 03 communicates with the NFC module 15 on the POS system 01 via near-field wireless communication. The central processing module 10 on the POS system 01 sends a password instruction to the NFC module 15, which then sends it to the NFC card module 26 on the information card system 03. The password instruction received by the NFC card module 26 is transmitted to the core processing module 20 and then stored in the core storage module to achieve the encryption of the information card system 03;

[0115] Or B. Encrypt the information card system 03 through the POS system 01. The magnetic stripe module 23 on the information card system 03 communicates with the card insertion module 14 on the POS system 01 through contact communication. The central processing module 10 on the POS system 01 sends a password instruction to the card insertion module 14, which then sends it to the magnetic stripe module 23 on the information card system 03. The password instruction received by the magnetic stripe module 23 is transmitted to the core processing module 20 and then stored in the core storage module (card storage module) to achieve the encryption of the information card system 03;

[0116] S5: Information Card Decryption:

[0117] C. Decrypt the information card system 03 through the POS system 01. The POS system 01 reads the information on the information card system 03 through NFC near-field communication, decrypts the information card system 03 through the decryption module 114 of the POS system 01, then performs identification and matching of the information card system 03 through the identification and comparison module 112, and then transmits it to the central processing module 10. If it is correct, the information is read, and the information is processed and executed through the central processing module 10. If it is incorrect, the information card system 03 is not decrypted, and at the same time, a warning is given through the warning module 11;

[0118] Or D. Decrypt the information card system 03 through the POS system 01. The POS system 01 reads the information on the information card system 03 through the contact communication of the card insertion module 14, decrypts the information card system 03 through the decryption module 114 of the POS system 01, then performs identification and matching of the information card system 03 through the identification and comparison module 112, and then transmits it to the central processing module 10. If it is correct, the information is read, and the information is processed and executed through the central processing module 10. If it is incorrect, the information card system 03 is not decrypted, and at the same time, a warning is given through the warning module 11;

[0119] S6: Payment Setting:

[0120] The information card system 03 is communicatively transmitted through the POS machine system 01. The information card system 03 is interconnected and shares information with the card insertion module 14 or NFC module 15 of the corresponding POS machine system 01 through the magnetic stripe module 23 or NFC card module 26. Payment password settings and / or fingerprint payment settings and / or image payment settings are performed on the information card system 03 and the POS machine system 01. Among them, the fingerprint payment setting is to collect fingerprint information through the fingerprint processing module 118, process the collected fingerprint information through the central processing module 10 and store it in the storage module 115, and further send the collected fingerprint information to the information card system 03 for storage. The image payment setting is to collect image information through the scanning module 111, process the collected image information through the central processing module 10 and store it in the storage module 115, and further send the collected image information to the information card system 03 for storage;

[0121] S7: Reading of the information card:

[0122] The POS machine system 01 is interconnected and shares information with the magnetic stripe module 23 or NFC card module 26 of the corresponding information card system 03 through the card insertion module 14 or NFC module 15. The POS machine system 01 reads the information data of the information card system 03 and displays it on the touch screen;

[0123] S8: Information card payment:

[0124] The information card system 03 is interconnected and shares information with the card insertion module 14 or NFC module 15 of the corresponding POS machine system 01 through the magnetic stripe module 23 or NFC card module 26. Then, an input interface for payment password and / or fingerprint payment and / or image payment appears on the display module 110. After entering the correct payment password or fingerprint or image, payment is made;

[0125] S9: Interconnection of POS machines of the same model:

[0126] The POS machine system 01 interconnects and shares information of multiple POS machines of the same model through the interaction module 19 and the communication transmission system 02, enabling offline connection without a network. When there is a network, resource information is shared;

[0127] S10: Self-destruction of the information card:

[0128] For the cancellation of the information card system 03, operations are performed on the POS machine system 01 interface. A self-destruction instruction is generated through the central processing module 10 and the NFC module 15, and shared with other POS machine systems 01 through the cooperation of the interaction module 19 and the communication transmission system 02. When the information card system 03 and the POS machine system 01 perform card insertion reading or NFC reading, the self-destruction instruction will be read, and the self-destruction chip module 25 of the information card system 03 will self-destruct, making the information card system 03 an invalid information card;

[0129] Or, when the information card is lost and the information card system 03 and the POS machine system 01 interact, in terms of identity recognition, if there is a recognition mismatch, the central processing module 10 and the NFC module 15 of the POS machine system 01 send a self-destruction instruction to the information card system 03, and the self-destruction chip module 25 in the information card system 03 cuts off the reading or payment channel;

[0130] S11: Offline payment and online debit:

[0131] The POS machine system 01 has a temporary storage function and can perform payments both offline and online. It can smoothly communicate with the information card system 03, store payment information in the storage module 115, and send the payment information to the bank end in a timely manner for debit when there is a network.

[0132] Among them, in the information card payment link of S8, it can be assumed that when the central processing module 10 recognizes that the number of times of entering the password exceeds the limit (tentatively six times) or the number of times of fingerprint recognition exceeds the limit (tentatively four times) or the number of times of face recognition exceeds the limit (tentatively four times), either one or more of them, the central processing module 10 sends a pre-self-destruction instruction to the NFC module 15, and then sends it to the information card system 03 through the interaction module 19 to self-destruct the information card; that is, self-destruct the incorrect information card or the problematic information card or the information card that does not belong to the user or is not permitted by the user;

[0133] Among them, in the payment setting of S6, the payment password setting can select PIN code encryption. Specifically, a hexadecimal encoded string is created through the SHA 256 protocol, and the encoded string is processed by the central processing module 10 and stored in the storage module 115. The face image payment setting is to collect face image information through the scanning module 111, and the collected face image information is processed by the central processing module 10 and stored in the storage module 115;

[0134] Among them, in the information card payment links of S6 and S8, this payment method selects the password + fingerprint combination mode or the password + image combination mode. For these two combination modes, a three-layer design structure is selected. The three-layer design structures are interconnected. The first layer is the verification module: the registration, feature extraction, and fingerprint / image matching stages. The second layer is the storage repository of the database: used to store all pre-registered passwords and fingerprints / images. The third layer is the software platform system: used to connect to the trading platform.

[0135] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A secure intelligent POS system, characterized in that The POS system includes: a POS machine system, a communication transmission system, and an information card system. The POS machine system is interconnected with the information card system and another POS machine system of the same model through the communication transmission system; The POS machine system includes a main control module, an interaction module, an image acquisition module, and a display module. The main control module is electrically connected to the image acquisition module, the interaction module, and the display module respectively. The interaction module cooperates with the communication transmission system and is used for information sharing and interaction between the POS machine system, the information card system, and another POS machine system of the same model; Among them, the image acquisition module includes a fingerprint processing module and a scanning module. The image output end of the scanning module is electrically connected to the image end of the main control module, and the fingerprint image output end of the fingerprint processing module is electrically connected to the image end of the main control module. The fingerprint processing module selects an integrated semiconductor sensor and a fingerprint algorithm chip as an integrated fingerprint processing module; The information card system includes a card main control module, a magnetic stripe module, and an NFC card module. The reading end of the magnetic stripe module is electrically connected to the reading end of the card main control module, and the wireless end of the NFC card module is electrically connected to the wireless end of the card main control module. The magnetic stripe module and the NFC card module perform information sharing and interaction with the interaction module on the POS machine system through the communication transmission system; Among them, the main control module includes a central processing module, an identification and comparison module, a storage module, an encryption module, and a decryption module. The identification end of the central processing module is electrically connected to the identification end of the identification and comparison module. The identification and comparison module is used to record the first input information and compare the information input for the second time and above with the first input information. The storage end of the storage module is electrically connected to the storage end of the central processing module. The storage module is used to store information and / or data. The encryption end of the encryption module is electrically connected to the encryption end of the central processing module. The encryption module is used to encrypt the POS machine system and the information card. The decryption end of the decryption module is electrically connected to the decryption end of the central processing module. The decryption module is used to decrypt the POS machine system and the information card. The central processing module is also electrically connected to the image acquisition module, the interaction module, and the display module respectively; Among them, the main control module on the POS machine system further includes a self-destruction module. The self-destruction control end of the central processing module is electrically connected to the self-destruction end of the self-destruction module. The self-destruction module cooperates with the interaction module and the communication transmission system and is used to send self-destruction instruction information to the information card system.

2. The secure and intelligent POS system according to claim 1, wherein, The central processing module includes a CPU module and an MCU module. The CPU module is electrically connected to the identification and comparison module, the storage module, the encryption module, the decryption module, the image acquisition module, the interaction module, the display module, and the MCU module respectively.

3. A secure intelligent POS system according to claim 1, characterized in that, The interaction module includes a signal transceiver module, a card insertion module, an NFC module, and an interface module. The signal transceiver module, the card insertion module, the NFC module, and the interface module are electrically connected to the main control module respectively.

4. A secure intelligent POS system according to claim 3, characterized in that The interface module includes a power interface, a data USB interface, and a wired communication interface, and the power interface, the data USB interface, and the wired communication interface are electrically connected to the main control module respectively.

5. A secure and intelligent POS system according to claim 1, characterized in that, The POS machine system further includes a printing module and a warning module, and the printing module and the warning module are electrically connected to the main control module respectively.

6. A secure and intelligent POS system according to claim 1, characterized in that, The card main control module on the information card system includes a core processing module, a core storage module, a download module, and a core recognition and comparison module. The storage end of the core processing module is electrically connected to the storage end of the core storage module. The reading end of the core processing module is electrically connected to the reading end of the magnetic stripe module. The recognition end of the core recognition and comparison module is electrically connected to the recognition end of the core processing module. The wireless end of the core processing module is electrically connected to the NFC card module. The download end of the download module is electrically connected to the download end of the core processing module.

7. A secure intelligent POS system according to claim 1, characterized in that, The card main control module on the information card system includes a self-destruction chip module, and the self-destruction chip module is used to receive the self-destruction instruction information sent by the self-destruction module in the main control module on the POS machine system, and execute the instruction information action to perform self-destruction of the information card.

8. A control method for a secure intelligent POS system, characterized in that, The control method includes: S1: System startup: The POS machine system is connected to an external power source, an internal power source terminal, and the power source terminal of an internal battery through the power interface to supply power to the POS machine system and charge the battery, turn on the entire POS machine system, and display a touch screen to display the POS machine interface. S2: Software program installation: The POS machine system is connected to a wireless WIFI network or a wired network. After the network connection is smooth, the required software programs in the POS machine are installed. The required software programs will be downloaded and installed through the program download function and stored in the storage module. The central processing module will constantly read and write data to the storage module. S3: Run software programs: Click on the installed software program icon to enter the corresponding software interface, and operate the software and / or connect online with the same model POS machine system and / or perform information interaction and sharing between the POS machine system and the information card system by operating the display touch screen. S4: Information card encryption: A. Encrypt the information card system through the POS machine system. The NFC card module on the information card system performs near-field wireless communication with the NFC module on the POS machine system. The central processing module on the POS machine system sends a password instruction to the NFC module, and then sends it to the NFC card module on the information card system. The NFC card module receives the password instruction and transmits it to the core processing module, and then stores it in the core storage module to achieve encryption of the information card system. Or B. Encrypt the information card system through the POS machine system. The magnetic stripe module on the information card system performs contact communication with the card insertion module on the POS machine system. The central processing module on the POS machine system sends a password instruction to the card insertion module, and then sends it to the magnetic stripe module on the information card system. The magnetic stripe module receives the password instruction and transmits it to the core processing module, and then stores it in the core storage module to achieve encryption of the information card system. S5: Information card decryption: C. Decrypt the information card system through the POS machine system. The POS machine system reads the information on the information card system through the near-field communication of NFC, decrypts the information card system through the decryption module of the POS machine system, then performs identification and matching of the information card system through the identification and comparison module, and then transmits it to the central processing module. If it is correct, the information is read, and the information is processed and executed through the central processing module. If it is incorrect, the decryption of the information card system is not performed, and at the same time, a warning is given through the warning module; Or D. Decrypt the information card system through the POS machine system. The POS machine system reads the information on the information card system through the contact communication of the card insertion module, decrypts the information card system through the decryption module of the POS machine system, then performs identification and matching of the information card system through the identification and comparison module, and then transmits it to the central processing module. If it is correct, the information is read, and the information is processed and executed through the central processing module. If it is incorrect, the decryption of the information card system is not performed, and at the same time, a warning is given through the warning module; S6: Payment settings: Conduct communication and transmission between the POS machine system and the information card system. The information card system conducts information interconnection and sharing with the corresponding card insertion module or NFC module of the POS machine system through the magnetic stripe module or NFC card module, and sets the payment password and / or fingerprint payment and / or image payment for the information card system and the POS machine system. Among them, the fingerprint payment setting is to collect fingerprint information through the fingerprint processing module, process the collected fingerprint information through the central processing module and store it in the storage module, and further send the collected fingerprint information to the information card system for storage. The image payment setting is to collect image information through the scanning module, process the collected image information through the central processing module and store it in the storage module, and further send the collected image information to the information card system for storage; S7: Reading of the information card: The POS machine system conducts information interconnection and sharing with the corresponding magnetic stripe module or NFC card module of the information card system through the card insertion module or NFC module, reads the information data of the information card system by the POS machine system, and displays it on the touch screen; S8: Information card payment: The information card system conducts information interconnection and sharing with the corresponding card insertion module or NFC module of the POS machine system through the magnetic stripe module or NFC card module, and then an input interface for the payment password and / or fingerprint payment and / or image payment appears on the display module. After entering the correct payment password or fingerprint or image, the payment is made; S9: Interconnection of POS machines of the same model: The POS machine system conducts information interconnection and sharing of multiple POS machines of the same model through the interaction module and the communication and transmission system, and can achieve offline connection without a network. When there is a network, resource information is shared; S10: Self-destruction of the information card: For the cancellation of the information card system, operations are performed on the POS machine system interface. A self-destruction instruction is generated through the central processing module and the self-destruction module, and is shared with other POS machine systems through the cooperation of the interaction module and the communication transmission system. When the information card system and the POS machine system perform card insertion reading or NFC reading, the self-destruction instruction will be read, and the self-destruction chip module of the information card system will self-destruct, making the information card system an invalid information card; Or, if the information card is lost, when the information card system and the POS machine system interact, in terms of identity recognition, if there is a mismatch in recognition, the central processing module and the self-destruction module of the POS machine system will send a self-destruction instruction to the information card system, and the self-destruction chip module in the information card system will cut off the reading or payment channel; S11: Offline payment and online deduction: The POS machine system has a temporary storage function and can perform payments both offline and online. It can smoothly communicate with the information card system and store the payment information in the storage module. When there is a network, the payment information will be sent to the bank end in a timely manner for deduction.

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