CN111027657A - Anti-counterfeiting tracing anti-theft label based on high-frequency NFC mechanism - Google Patents
Anti-counterfeiting tracing anti-theft label based on high-frequency NFC mechanism Download PDFInfo
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- CN111027657A CN111027657A CN201811171160.7A CN201811171160A CN111027657A CN 111027657 A CN111027657 A CN 111027657A CN 201811171160 A CN201811171160 A CN 201811171160A CN 111027657 A CN111027657 A CN 111027657A
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- 230000007246 mechanism Effects 0.000 title claims abstract description 38
- 239000000758 substrate Substances 0.000 claims abstract description 23
- 238000004891 communication Methods 0.000 claims abstract description 9
- 238000010586 diagram Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 8
- 230000005347 demagnetization Effects 0.000 description 4
- 230000005672 electromagnetic field Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/0772—Physical layout of the record carrier
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
- G06K17/0022—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisions for transferring data to distant stations, e.g. from a sensing device
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Abstract
The invention provides an anti-counterfeiting tracing anti-theft label based on a high-frequency NFC mechanism, which comprises: the substrate, form first coil and second coil on the surface of substrate, and the NFC chip, the storage of NFC chip has digital signature, product information and default are the status code of 0, first coil is as the antenna and the NFC chip electric connection of NFC chip, the NFC chip can be through first coil and NFC read write line communication, the NFC read write line can read/write the operation through the status code of first coil to the NFC chip, the NFC chip has IO interface and ground connection interface, the second coil is as the EAS coil, the IO interface forms closed loop through second coil electric connection ground connection interface.
Description
Technical Field
The invention relates to the field of Radio Frequency Identification (RFID) tags, in particular to an anti-counterfeiting tracing anti-theft tag based on a high-frequency NFC mechanism and a system using the volume label.
Background
At present, in a market using an open shelf, in order to monitor and prevent a theft of goods, an Electronic Article Surveillance system (eassys) is generally installed, the EAS system mainly includes a Detector, a disabler and an EAS tag, wherein the Detector is generally disposed at an entrance and an exit of the market, the existing Detector is also generally called a security gate, the Detector is used for detecting whether an Article whose settlement and demagnetization are not completed is illegally taken out of the market, and the Article to which the EAS tag is attached should be demagnetized by the disabler after the settlement is completed to pass through the Detector legally.
The EAS system transmits a specific frequency signal to warn through the detector, the working frequency band of the conventional EAS system is 8.2MHz, when an demagnetized EAS label passes through the detection range of the detector, the EAS label can excite a corresponding electromagnetic field to vibrate, and the electromagnetic field is detected by the detector to trigger alarm. The conventional EAS label does not need a chip, and the corresponding electromagnetic field is oscillated by completely depending on a metal coil, so that the purpose of demagnetization can be achieved only by a physical destruction or manual removal method. Most stores using EAS systems today are therefore equipped with degaussing plates or corresponding devices at the checkout counter.
NFC (near Field communication) tags are currently used for anti-counterfeiting tracing of commodities, are generally provided by manufacturers and attached to surfaces of commodities when shipped out of factories, and are evolved from rfid (radio Frequency identification) technology, which is a near Field communication technology and allows non-contact data exchange between electronic devices. The basic architecture of the commodity anti-counterfeiting traceable system based on the NFC technology comprises the following steps: NFC system, communication network, anti-fake verification traceability system. The NFC system comprises an NFC volume label and an NFC reader-writer (supporting a mobile phone with an NFC function). The NFC volume label is provided with a unique code of the commodity and a digital signature of a manufacturer, a consumer can scan the NFC label adhered to the commodity through a mobile phone, and the authenticity, the production place or the source of the commodity can be identified through the online anti-counterfeiting verification traceable system of the communication network. Some existing NFC tags do not have a tear-proof function, so many NFC tags are recycled, copied, pasted to counterfeit goods and distributed to the market, which seriously damages the rights and interests of manufacturers, markets and consumers.
Disclosure of Invention
The invention aims to provide an anti-counterfeiting tracing anti-theft label based on a high-frequency NFC mechanism and an anti-counterfeiting tracing anti-theft system comprising the anti-counterfeiting tracing anti-theft label.
Based on solving the technical problems, the invention provides an anti-counterfeiting tracing anti-theft label based on a high-frequency NFC mechanism, which comprises: the NFC chip comprises a substrate, a first coil and a second coil which are formed on the surface of the substrate, and an NFC chip fixed on the surface of the substrate; wherein, the NFC chip stores the digital signature, the product information and the state code with the default value of 0, the first coil is electrically connected with the NFC chip, the first coil is used as the antenna of the NFC chip, the NFC chip can communicate with an NFC reader through the first coil, the NFC reader-writer can read/write the state code of the NFC chip through the first coil, the NFC chip is provided with an IO interface and a Ground (GND) interface, the IO interface is electrically connected with the ground interface through the second coil to form a closed loop (closed circuit), the state code is kept to be 0 when the second coil is not damaged and the closed loop is kept, when the second coil is damaged or becomes an open loop, the NFC chip rewrites the state code to 1, the NFC reader-writer can rewrite the state code to 1 through communication with the NFC chip, and the state code cannot be changed any more after being rewritten to 1.
In another aspect of the present invention, an anti-counterfeiting tracing anti-theft system based on a high frequency NFC mechanism is provided, which includes: an anti-counterfeiting tracing anti-theft label, an NFC reader-writer and a Detector (Detector);
wherein anti-fake traceing back theftproof label includes: the NFC chip comprises a substrate, a first coil and a second coil which are formed on the surface of the substrate, and an NFC chip fixed on the surface of the substrate; the NFC chip is internally stored with a digital signature, product information and a state code, the first coil is electrically connected with the NFC chip, the first coil is used as an antenna of the NFC chip, the NFC chip can communicate with the NFC reader through the first coil, the NFC chip is provided with an IO interface and a Ground (GND) interface, the IO interface is electrically connected with the ground interface through the second coil to form a closed loop (closed circuit), the default value of the state code is 0, the state code is kept to be 0 when the second coil is not damaged and kept in the closed loop, the NFC chip rewrites the state code to be 1 when the second coil is damaged or becomes an open loop, the NFC reader can rewrite the state code to be 1 through communicating with the NFC chip, and the state code cannot be changed after being rewritten to be 1;
the NFC reader-writer can communicate with the NFC chip through the first coil and carry out read/write operation on the state code;
the detector is used for detecting the second coil and generating an alarm when detecting that the second coil is a closed loop.
Wherein the second coil is an EAS coil.
Wherein the first coil and the second coil are formed in a side-by-side relationship on the same side surface of the substrate.
And the NFC reader-writer is communicated with the NFC chip to rewrite the state code to be 1, and simultaneously sends an instruction to the NFC chip to disconnect the EAS coil to form an open loop.
When the second coil is not damaged and a closed loop is maintained, the IO interface is grounded to default low level, the NFC reader-writer is communicated with the NFC chip to rewrite the state code to be 1, the NFC reader-writer sends an instruction to the NFC chip to switch the output switch of the IO interface to be high level, and the IO interface is disconnected with the grounded interface.
The anti-counterfeiting tracing anti-theft label based on the high-frequency NFC mechanism and the system using the volume label have the advantages that:
(1) the anti-counterfeiting tracing anti-theft label based on the high-frequency NFC mechanism is stuck to a commodity for use, and the tracing and anti-theft functions of the commodity can be realized at the same time;
(2) through the design of integrating NFC volume label and EAS coil/label as an organic whole, both can make things convenient for consumer or firm to trace to the source, can save the process that the EAS label was pasted to the dealer again, labour saving and time saving.
(3) When the second coil as the EAS coil is damaged or the commodity is checked out, the NFC chip rewrites the state code to 1 and is irreversible, so that the recovery copying can be prevented, if the label is copied, the state code still remains to 1, and the consumer is prompted that the commodity has problems.
(4) The commodity passes through the NFC chip disconnection second antenna when accomplishing the account settling, possesses the function of removing the theftproof mechanism simultaneously at the account settling, does not need to do the operation of demagnetization or removing the theftproof mechanism again, has improved cashier's work efficiency.
Other features and embodiments of the present invention will be described in detail below with reference to the drawings.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of an anti-counterfeiting tracing anti-theft tag based on a high-frequency NFC mechanism according to the present invention;
fig. 2 is a schematic diagram of an equivalent circuit architecture of an embodiment of the anti-counterfeiting tracing anti-theft tag based on a high-frequency NFC mechanism, which illustrates the structures of an antenna interface, an IO interface and a ground interface of an NFC chip;
FIG. 3 is a schematic structural diagram of an embodiment of the anti-counterfeiting tracing anti-theft system based on a high-frequency NFC mechanism according to the present invention;
fig. 4 is a schematic usage state diagram of the anti-counterfeiting tracing anti-theft label based on the high-frequency NFC mechanism according to the present invention;
fig. 5 is a schematic diagram of another usage state of the anti-counterfeiting tracing anti-theft label based on the high-frequency NFC mechanism according to the present invention;
fig. 6 is a schematic diagram of another use state of the anti-counterfeiting tracing anti-theft tag based on the high-frequency NFC mechanism.
Description of the symbols
10 anti-fake 20 base materials of traceable anti-theft label
21 tear line 31 first coil
32 second coil 40NFC chip
41, 42 antenna interface 43IO interface
44 Ground (GND) interface 50NFC reader
Product with 60 detectors
Detailed Description
The positional relationship described in the following embodiments includes: the top, bottom, left and right, unless otherwise indicated, are based on the orientation of the elements in the drawings.
Fig. 1 is a schematic structural diagram of an embodiment of an anti-counterfeiting tracing anti-theft tag based on a high-frequency NFC mechanism according to the present invention. The anti-counterfeiting tracing anti-theft label 10 based on the high-frequency NFC mechanism comprises: a substrate 20, a first coil 31 and a second coil 32 formed on the surface of the substrate 20, and an NFC chip 40 fixed on the surface of the substrate 20; the material of the base material 20 can be any one of paper and plastic film; the storage of the NFC chip 40 stores a digital signature, product information, and a status code with a default value of 0, and a consumer or a manufacturer can read the digital signature and/or the product information through an NFC reading device or a mobile phone supporting an NFC function, thereby implementing the functions of tracing to the source and preventing counterfeiting of the commodity.
Wherein the first coil 31 is electrically connected to the NFC chip 40, as shown in fig. 2, in an embodiment, the first coil 31 is electrically connected to antenna interfaces 41 and 42 of the NFC chip, the first coil 31 serves as an antenna of the NFC chip 40, the NFC chip 40 can communicate with an NFC reader 50 through the first coil 31 (see fig. 3), the NFC reader 50 can read/write the aforementioned status code of the NFC chip 40 through the first coil 31, the NFC chip 40 has an IO interface 43 and a Ground (GND) interface 44, the IO interface 43 is electrically connected to the ground interface 44 through the second coil 32 to form a closed loop (closed loop), where an embodiment of the second coil 32 is an EAS coil, that is, when the second coil 32 passes through a security gate of a shopping mall in an un-demagnetized state, the EAS system is triggered to issue an alarm; the state code remains 0 when the second coil 32 is not broken and remains in a closed loop, and the NFC chip 40 rewrites the state code to 1 when the second coil 32 is broken or becomes an open loop.
As a preferred configuration of the anti-counterfeiting tracing anti-theft label based on the high frequency NFC mechanism, the first coil 31 and the second coil 32 are formed on the same side surface of the substrate 20 in a side-by-side relationship, and the second coil 32 can be broken, for example, when the substrate 20 is designed with a tear line 21 that can be torn or torn, and the tear line 21 and the second coil 32 intersect on a projection plane, or the tear line 21 transversely passes through the projection plane of the second coil 32, the second coil 32 can be broken while the substrate 20 is torn or torn along the tear line 21.
As an embodiment of the anti-counterfeiting tracing anti-theft tag based on the high-frequency NFC mechanism, the NFC reader 50 writes the state code into 1 by communicating with the NFC chip 40, and simultaneously sends a command to the NFC chip 40 to turn off the second coil 32 (i.e., the EAS coil) to form an open loop. In a specific embodiment, when the second coil 32 is not damaged and remains in a closed loop, the IO interface 43 is grounded to a default low level, the NFC reader 50 rewrites the state code to 1 through communication with the NFC chip 40, and at the same time, the NFC reader 50 sends an instruction to the NFC chip 40 to switch the output switch of the IO interface 43 to a high level, so that the IO interface 43 is disconnected from the ground interface 44. Therefore, the commodity P can be disconnected from the second antenna 32 through the NFC chip 40 while the checkout is finished, the function of checkout and the anti-theft mechanism removal are achieved, the demagnetization or the anti-theft mechanism removal operation is not needed again, and the working efficiency of a cashier is improved.
Fig. 3 is a functional block diagram of an embodiment of an anti-counterfeiting traceability anti-theft system based on a high-frequency NFC mechanism according to the present invention. An implementation mode of an anti-counterfeiting tracing anti-theft system based on a high-frequency NFC mechanism comprises the following steps: the anti-counterfeiting tracing anti-theft label comprises an anti-counterfeiting tracing anti-theft label 10, an NFC reader-writer 50 and a Detector 60 (Detector).
The NFC reader 50 may communicate with the NFC chip 40 through the first coil 31, and perform read/write operations on the aforementioned status code; as a preferred embodiment of the anti-counterfeiting tracing anti-theft system of the present invention, the NFC reader 50 is further connected to a Point of sale (POS) system, so as to perform operations of demagnetizing or deactivating the anti-counterfeiting tracing anti-theft tag 10 attached to the commodity P while the commodity P is being checked out. The detector 60 is used to detect the second coil 32, and generate an alarm when detecting that the second coil 32 is a closed loop, such as an alarm generated by sound and/or light, to achieve the purpose of anti-theft.
Please refer to fig. 4 to fig. 6, which are schematic diagrams illustrating several usage states of the anti-counterfeit tracing anti-theft tag based on the high-frequency NFC mechanism according to the present invention. Fig. 4 shows that when the anti-counterfeiting traceability anti-theft tag 10 based on the high-frequency NFC mechanism is attached to the article P for use, the article P is not checked out and the second coil 32 as the EAS coil is not destroyed or demagnetized, the status code is 0 (default value).
Fig. 5 shows that when the second coil 32 serving as the EAS coil is broken and becomes an open loop, and the IO interface 43 cannot be electrically connected to the ground interface 44 through the second coil 32, the NFC chip 40 detects that the IO interface 43 is floating, and the NFC chip 40 rewrites the state code to 1.
Fig. 6 shows that the NFC reader 50 sends a command to the NFC chip 40 to open the second coil 32 (i.e., the EAS coil) to become an open loop while the article P is checked out, and the NFC chip 40 rewrites the status code to 1. In other words, the NFC reader/writer 50 sends an instruction to the NFC chip 40 to rewrite the status code to 1, and then the status code cannot be changed any more, and the status code is still 1 even after being copied, so that the NFC chip 40 has a function of preventing recovery and copying. Therefore, if the anti-counterfeiting traceable anti-theft tag 10 based on the high-frequency NFC mechanism is copied or recycled, the manufacturer or the consumer can know whether the goods have problems by scanning and reading the status code, wherein the status code 1 indicates that the goods have been paid out or the second coil 32 is damaged.
The invention combines the NFC label and the EAS technology to realize the functions of anti-counterfeiting traceability, anti-tearing and anti-theft; meanwhile, when the anti-counterfeiting tracing anti-theft label 10 is pasted on a commodity after leaving a factory, the anti-counterfeiting tracing anti-theft label simultaneously has an EAS function, and a market or a merchant does not need to spend time to paste the EAS label, so that the cost is saved.
The above-described embodiments and/or implementations are only for illustrating the preferred embodiments and/or implementations of the present technology, and are not intended to limit the implementations of the present technology in any way, and those skilled in the art may make modifications or changes to other equivalent embodiments without departing from the scope of the technical means disclosed in the present disclosure, but should be construed as the technology or implementations substantially the same as the present technology.
Claims (10)
1. The utility model provides an anti-fake theftproof label of traceing back based on high frequency NFC mechanism which characterized in that includes:
a substrate;
a first coil formed on the surface of the substrate;
a second coil formed on the surface of the substrate; and
an NFC chip is fixed on the surface of the substrate, a digital signature, product information and a state code with a default value of 0 are stored in the NFC chip, the first coil is electrically connected with the NFC chip, the first coil is used as an antenna of the NFC chip, the NFC chip can communicate with an NFC reader-writer through the first coil, the NFC reader-writer can read/write the state code of the NFC chip through the first coil, the NFC chip is provided with an IO interface and a grounding interface, the IO interface is electrically connected with the grounding interface through the second coil to form a closed loop, the state code is kept to be 0 when the second coil is not damaged and kept to be in the closed loop, the state code of the NFC chip is 1 when the second coil is damaged or changed into an open loop, and the NFC reader-writer can rewrite the state code to be 1 through communication with the NFC chip, the status code is not changed any more after being rewritten to 1.
2. An anti-counterfeiting tracing anti-theft volume label based on a high-frequency NFC mechanism as claimed in claim 1, characterized in that: the second coil is an EAS coil.
3. An anti-counterfeiting tracing anti-theft label based on a high-frequency NFC mechanism as claimed in claim 1 or 2, characterized in that: the first coil and the second coil are formed on the same side surface of the substrate in a side-by-side relationship.
4. An anti-counterfeiting tracing anti-theft volume label based on a high-frequency NFC mechanism as claimed in claim 1, characterized in that: and the NFC reader-writer is communicated with the NFC chip to rewrite the state code into 1, and simultaneously sends an instruction to the NFC chip to disconnect the EAS coil to form an open loop.
5. An anti-counterfeiting tracing anti-theft volume label based on a high-frequency NFC mechanism as claimed in claim 1, characterized in that: when the second coil is not damaged and a closed loop is maintained, the IO interface is grounded to default low level, the NFC reader-writer is communicated with the NFC chip to rewrite the state code to be 1, the NFC reader-writer sends an instruction to the NFC chip to switch the output switch of the IO interface to be high level, and the IO interface is disconnected with the grounded interface.
6. The utility model provides an anti-fake traceability anti-theft system based on high frequency NFC mechanism which characterized in that includes: the anti-counterfeiting tracing anti-theft label comprises an anti-counterfeiting tracing anti-theft label, an NFC reader-writer and a detector;
this anti-fake theftproof label of traceing back includes: a substrate, a first coil and a second coil formed on the surface of the substrate; the NFC chip is internally stored with a digital signature, product information and a state code, the first coil is electrically connected with the NFC chip, the first coil is used as an antenna of the NFC chip, the NFC chip can communicate with the NFC reader-writer through the first coil, the NFC chip is provided with an IO interface and a grounding interface, the IO interface is electrically connected with the grounding interface through the second coil to form a closed loop, the default value of the state code is 0, the state code is kept to be 0 when the second coil is not damaged and kept to be in the closed loop, the NFC chip rewrites the state code to be 1 when the second coil is damaged or becomes an open loop, the NFC reader-writer can rewrite the state code to be 1 through communication with the NFC chip, and the state code cannot be changed again after being rewritten to be 1;
the NFC reader-writer can communicate with the NFC chip through the first coil and carry out read/write operation on the state code;
the detector is used for detecting the second coil and generating an alarm when detecting that the second coil is a closed loop.
7. An anti-counterfeiting tracing anti-theft system based on a high-frequency NFC mechanism according to claim 6, characterized in that: the second coil is an EAS coil.
8. An anti-counterfeiting traceability anti-theft system based on a high-frequency NFC mechanism as claimed in claim 6 or 7, wherein: the first coil and the second coil are formed on the same side surface of the substrate in a side-by-side relationship.
9. An anti-counterfeiting tracing anti-theft system based on a high-frequency NFC mechanism according to claim 6, characterized in that: and the NFC reader-writer is communicated with the NFC chip to rewrite the state code into 1, and simultaneously sends an instruction to the NFC chip to disconnect the EAS coil to form an open loop.
10. An anti-counterfeiting tracing anti-theft system based on a high-frequency NFC mechanism according to claim 6, characterized in that: when the second coil is not damaged and a closed loop is maintained, the IO interface is grounded to default low level, the NFC reader-writer is communicated with the NFC chip to rewrite the state code to be 1, the NFC reader-writer sends an instruction to the NFC chip to switch the output switch of the IO interface to be high level, and the IO interface is disconnected with the grounded interface.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811171160.7A CN111027657A (en) | 2018-10-09 | 2018-10-09 | Anti-counterfeiting tracing anti-theft label based on high-frequency NFC mechanism |
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| CN201811171160.7A CN111027657A (en) | 2018-10-09 | 2018-10-09 | Anti-counterfeiting tracing anti-theft label based on high-frequency NFC mechanism |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202615430U (en) * | 2012-03-09 | 2012-12-19 | 杭州美思特电子科技有限公司 | RFID+EAS circuit board signal coil |
| CN204463188U (en) * | 2014-12-30 | 2015-07-08 | 江苏联恒物宇科技有限公司 | A kind of double-frequency card based on new E AS and NFC label |
| CN106156826A (en) * | 2015-03-25 | 2016-11-23 | 宋海儒 | A kind of NFC illegal on-off circuit |
| CN108388938A (en) * | 2018-03-15 | 2018-08-10 | 华大半导体有限公司 | Antifalsification label |
| CN209015192U (en) * | 2018-10-09 | 2019-06-21 | 葛兰菲安全有限公司 | Anti-fake retrospect anti-theft tag based on high frequency NFC mechanism |
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2018
- 2018-10-09 CN CN201811171160.7A patent/CN111027657A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202615430U (en) * | 2012-03-09 | 2012-12-19 | 杭州美思特电子科技有限公司 | RFID+EAS circuit board signal coil |
| CN204463188U (en) * | 2014-12-30 | 2015-07-08 | 江苏联恒物宇科技有限公司 | A kind of double-frequency card based on new E AS and NFC label |
| CN106156826A (en) * | 2015-03-25 | 2016-11-23 | 宋海儒 | A kind of NFC illegal on-off circuit |
| CN108388938A (en) * | 2018-03-15 | 2018-08-10 | 华大半导体有限公司 | Antifalsification label |
| CN209015192U (en) * | 2018-10-09 | 2019-06-21 | 葛兰菲安全有限公司 | Anti-fake retrospect anti-theft tag based on high frequency NFC mechanism |
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Application publication date: 20200417 |