KR20070047441A - System and method for preventing misusing blocker tag - Google Patents

Abstract

      The present invention relates to a system and method for receiving electronic tag or blocker tag information attached to an article from an electronic tag reader and preventing abuse of the blocker tag, wherein the blocker tag is received from the blocker tag information received from the electronic tag reader. Is determined to be a valid blocker tag, and if the blocker tag is not a valid blocker tag, the function of the blocker tag is stopped, and then the information of the electronic tag is read. In the case of using the blocker tag in an electronic tag environment, it is possible to prevent the abuse of the blocker tag by checking whether the blocker tag is properly authenticated and stopping the function of the unauthorized blocker tag.

RFID, Blocker Tag, Commodity, Invariant Identifier

Description

System and Method for preventing misusing blocker tag}

1 is a block diagram of a blocker tag abuse prevention system according to an embodiment of the present invention.

2 is a structural diagram of a tree walking algorithm according to an embodiment of the present invention.

3 is a flowchart illustrating a method for preventing a blocker tag abuse according to an exemplary embodiment of the present invention.

The present invention relates to a system and method for preventing abuse of a blocker tag used for protecting user privacy in a radio frequency identification (RFID) environment.

In general, RFID (Radio Frequency IDentification) has the advantages of being able to store more information than the conventional bar code, easy to attach and long distance information transmission and reception. For this reason, electronic tags have been widely used in recent years, electronic tags transmit and receive to and from the reader using high frequency, and readers transmit and receive information using radio frequencies from electronic tags attached to objects and provide related services.

Conventionally, in order to protect the user's privacy in the electronic tag environment, an electronic tag having an electronic tag thing identifier beginning with '0' is attached to the item before the user purchases the item in the store, and after the user purchases the item, Changed the tag thing identifier to start with '1'. Then, when the electronic tag thing identifier starts with '1', a shopping bag with a blocker tag that prevents the electronic tag reader from recognizing the electronic tag thing identifier is provided to provide security for the user's purchased goods. However, in this method of providing security using a blocker tag, an unauthorized blocker tag in the store is used to prevent the electronic tag reader in the store from recognizing all the electronic tags starting with '0' and '1'. A Denial of Service (DoS) attack can be used to steal goods by paralyzing the functionality of an e-tag reader or preventing it from reading a range of e-tag identifiers that begin with a '0'.

Therefore, in using a blocker tag, it is necessary to prevent such abuse.

The present invention has been made in an effort to protect electronic tag information on an article using a blocker tag in order to guarantee user privacy in an electronic tag environment. An electronic tag reader reads some information of the blocker tag. After the information is recognized as the blocker tag information, the blocker checks whether the blocker tag is a legitimate blocker tag and sends a command to prevent the blocker tag from operating unless it has the right authority. It is to provide a tag abuse prevention system and method.

Blocker tag abuse prevention system according to one feature of the present invention for solving this problem,

A system for receiving electronic tag or blocker tag information attached to an article from an electronic tag reader and preventing abuse of the blocker tag,

A database for storing owner information and authentication information of the blocker tag used in a corresponding zone;

And a server that receives the blocker tag information received from the electronic tag reader and compares the information with the information stored in the database to determine whether the blocker tag is a legitimate blocker tag, and stops the function of the blocker tag if the blocker tag is not a legitimate blocker tag.

The electronic tag reader reads owner information and authentication information of a blocker tag, and stops the function of the blocker tag according to a command of the server.

Blocker tag abuse prevention method according to another feature of the present invention for solving this problem,

A method of receiving electronic tag or blocker tag information attached to an article from an electronic tag reader and preventing abuse of the blocker tag,

Determining whether the blocker tag is a valid blocker tag from the blocker tag information received from the electronic tag reader;

If the blocker tag is not a valid blocker tag, disabling the blocker tag.

Determining whether the blocker tag is a valid blocker tag,

Determining whether an owner of the blocker tag is a legitimate owner;

And determining whether the blocker tag is an authenticated blocker tag.

The method may further include pre-registering authentication information including the owner information of the blocker tag and the invariant unique identifier used in the store, and identifying whether the electronic tag or the blocker tag is based on the owner information. .

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention. Like parts are designated by like reference numerals throughout the specification.

 In addition, when a part is said to "include" a certain component, which means that it may further include other components, except to exclude other components unless otherwise stated.

1 is a block diagram of a blocker tag abuse prevention system according to an embodiment of the present invention.

Referring to FIG. 1, the memory 110 of the electronic tag 100 includes an electronic tag constant unique identifier 111 for uniquely identifying an electronic tag, an electronic tag thing identifier for identifying an object to which an electronic tag is attached. 113, an electronic tag application identifier 114 that can process an electronic tag command is stored.

In addition, the memory 210 of the blocker tag 200 includes a blocker tag constant unique identifier 211 for uniquely identifying the blocker tag, a blocker tag thing identifier 213 and a blocker for displaying thing information on the blocker tag itself. A blocker tag application identifier 214 is stored that indicates the range of electronic tag thing identifiers that the tag uses to protect the user's privacy.

In addition, the thing identifier 113 of the electronic tag stored in the data recording space 112 includes a code manager indicating the owner of the electronic tag and an object manager indicating the object information with the electronic tag attached thereto. ) And a serial number for the product, and the owner information indicates whether it is an electronic tag.

In addition, the blocker tag thing identifier 213 of the blocker tag stored in the data recording space 212 includes a code manager indicating an owner of the blocker tag, an object manager for representing a blocker object, and a serial number of the blocker tag. If you look at the owner information, you can tell if it is a blocker tag. The least significant bit of the object manager of the blocker tag indicates a privacy bit that prevents the blocker tag from reading the protected electronic tag information, and sets the privacy bit to be on or off to operate the electronic tag protection function of the blocker tag. You can control whether or not.

The length of each component of the electronic tag and the length of each component of the blocker tag corresponding thereto are the same, but may vary as necessary.

Referring to FIG. 1, the electronic tag reader 400 may read the owner information reading module 410, the electronic tag thing identifier 113, and the blocker tag thing identifier, which read only owner information of the electronic tag 100 and the blocker tag 200. The electronic tag reading module 420 is read.

When the privacy tag of the destination manager is set to ON in the blocker tag thing identifier 213 of the blocker tag 200, when the electronic tag reader 400 tries to read the electronic tag thing identifier 113, the blocker tag Since the electronic tag reader 400 determines that the electronic tag reader 400 attempts to read a value within the electronic tag identifier range recorded in the blocker tag application field identifier 214, the signal 200 prevents the electronic tag identifier from being read. Does not read electronic tags.

Referring to FIG. 1, a blocker tag abuse prevention system according to an exemplary embodiment of the present invention is connected to an electronic tag reader 400 for reading electronic tag information under an electronic tag environment. In addition, the blocker tag exploit prevention system according to an embodiment of the present invention, the server 310, the blocker tag DB 320 and the authenticated electronic stores information about the owner of the authenticated blocker tag and the blocker tag constant unique identifiers. Electronic tag DB 310 that stores information about the owner of the tag and the electronic tag constant unique identifiers.

The server 310 includes a blocker tag related module 311 and an electronic tag related module 314. The blocker tag related module 311 includes a blocker tag checking module 312 and a blocker tag control module 313. When the electronic tag reader 400 reads the owner information and transmits the owner information, the blocker tag inspection module 312 searches the blocker tag DB 320 or the electronic tag DB 330 to determine whether the owner is the electronic tag owner or the blocker tag owner. To judge. If the determination result is the blocker tag information, it is determined whether the owner of the corresponding blocker tag is justified. In addition, if the corresponding blocker tag 200 belongs to a legitimate owner, the blocker tag may receive the blocker tag constant unique identifier 211 for the blocker tag through the electronic tag reader 400, and then the blocker tag may be authenticated. The tag DB 320 is searched and determined. The blocker tag control module 313 of the server 310 determines that the blocker tag 200 in the blocker tag checking module 312 is determined to be of an illegal owner or has an unidentified blocker tag constant unique identifier. The reader 400 performs a function of giving a command to turn off the privacy bit of the object manager of the blocker tag identifier 213 of the blocker tag 200.

The electronic tag information processing module 315 of the electronic tag related module 314 processes the electronic tag related information.

Meanwhile, the owner information reading module 410 and the electronic tag reading module 420 of the electronic tag reader 400 recognize the electronic tag or the blocker tag by using a tree walking algorithm. Shown.

Referring to FIG. 2, the tree walking algorithm first queries whether there is a tag starting with 0 according to the depth first search method starting from the root node of the tree, and if there is a tag starting with 0, Answer the query.

In the case of FIG. 2, since there is a tag starting with 0, a query is queried whether there is a tag starting with 00. In FIG. 2, since there is no tag that starts with 00, the query is queried whether there is a tag that starts with 01, and then 010 and 011 are queried. At this time, since there is an electronic tag starting with 011, the electronic tag reader 400 responds to the inquiry.

As described above, the electronic tag reader 400 recognizes bit values constituting the electronic tag thing identifier as a tree structure in order to read the electronic tag information of the corresponding area, and sequentially reads the tree node from the root node to the terminal node. An algorithm is used, which can be modified as needed.

Next, an operation of the present invention having such a configuration will be described in detail with reference to FIG. 3. Here, the detailed operation part described above will be briefly described.

3 is an operation flowchart of a method for preventing a blocker tag abuse.

Referring to FIG. 3, in order to prevent abuse of the blocker tag in the electronic tag environment, the blocker tag DB 320 may include information about the owner of the blocker tag 200 and the blocker tag invariant unique identifier, which may be properly used in the store. Register at (S100).

Then, when starting the operation of the electronic tag reader 400, the owner information of the electronic tag 100 and the blocker tag 200 is first read (S110). Then, the electronic tag reader 400 sequentially queries the owner information by using the tree walking algorithm of FIG. 2.

If the electronic tag reader 400 reads information on the terminal node while searching the tree in step S100, the server 310 determines whether the owner information of the node is the electronic tag 100 information. It is determined whether the information (S120).

If it is determined that the information of the terminal node is the information of the blocker tag 200 (S130), it is determined whether the owner of the blocker tag is justified from the information of the blocker tag thing identifier 213 in step S140.

If it is determined in step S130 that the blocker tag 200 is not the information, the step S110 is repeated in step S110. If it is determined in step S140 that the owner of the blocker tag 200 is legitimate, in step S150, the constant unique identifier 211 of the blocker tag 200 is read through the electronic tag reader 400.

In step S160, it is determined whether the blocker tag constant unique identifier 211 read in step 150 is authenticated, and if not, in step S170, the private bit of the blocker tag is set to off.

If it is determined in step S140 that the owner of the blocker tag 200 is not justified, the command sets the privacy bit of the object manager of the blocker tag 200 to be off. Here, the owner information includes information such as E-Mart, Home Plus, Hyundai Department Store, and the like.

If it is determined in step S160 that the blocker tag constant unique identifier 213 is authenticated, step S150 is repeated.

In operation S180, it is determined whether the owner information search for all the tags is finished. If the owner information search is completed, the electronic tag reader 400 reads the normal electronic tag thing identifier 113.

In this process, the blocker tag 200 legitimately authenticated signals the electronic tag reader 400 not to read the electronic tag thing identifier 113 whose privacy is designated for the user's privacy protection. In this case, when the electronic tag thing identifier has a specific range, the blocker tag 200 stops the operation of the electronic tag reader 400 by sending a signal to prevent the electronic tag reader 400 from recognizing the electronic tag thing identifier of the corresponding range. Use the method to make it.

If the owner information search for the tag is not finished at step S180, the process is repeated at step S110.

As such, after the function of the illegally used blocker tag is stopped, the electronic tag reader 410 proceeds with the normal electronic tag reading operation to prevent abuse of the blocker tag.

As described above, in the embodiment of the present invention, it is determined that the blocker tag is justified according to whether the owner is right and whether it is authenticated, and it is possible to determine only one as needed, and the blocker tag DB 320, each electronic tag. The information stored in the blocker tag may also be variously modified.

The embodiments of the present invention described above are not implemented only through the apparatus and the method, but may be implemented through a program for realizing a function corresponding to the configuration of the embodiment of the present invention or a recording medium on which the program is recorded. Implementation may be easily implemented by those skilled in the art from the description of the above-described embodiments.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

As described above, in the embodiment of the present invention, when attempting to use the blocker tag in the electronic tag environment, the blocker tag is checked by checking whether the blocker tag is properly authenticated and stopping the function of the unblocked blocker tag. A system and method can be provided that can prevent abuse.

Claims (10)

A system for receiving electronic tag or blocker tag information attached to an article from an electronic tag reader and preventing abuse of the blocker tag, A database for storing owner information and authentication information of the blocker tag used in a corresponding zone; A blocker tag including a server that receives the blocker tag information received from the electronic tag reader and compares the information with the information stored in the database to determine whether the blocker tag is a legitimate blocker tag, and stops the function of the blocker tag if the blocker tag is not a legitimate blocker tag. Exploit Prevention System. The method of claim 1, A blocker tag abuse prevention system further comprising an electronic tag database for storing information of the electronic tag. The method of claim 2, The electronic tag reader reads the owner information and the authentication information of the blocker tag, and stops the function of the blocker tag according to a command of the server. The method according to claim 2 or 3, The server, A blocker tag exploit prevention system comprising a blocker tag related module for inspecting and authenticating a blocker tag and an electronic tag related module for processing information of the electronic tag. The method of claim 4, wherein The blocker tag related module, When the electronic tag reader reads the owner information and transmits the owner information, the blocker tag DB and the electronic tag DB are searched to determine whether the owner is the electronic tag owner or the blocker tag owner. If the determination result is the blocker tag information, the owner of the blocker tag is determined. A blocker tag checking module for determining whether it is right; If the blocker tag check module is determined to be an illegal owner of the blocker tag checking module, the electronic tag reader issues a command to turn off the privacy bit of the object manager of the blocker tag identifier of the blocker tag; A blocker tag exploit prevention system comprising a blocker tag control module. The method of claim 4, wherein The blocker tag related module, A blocker tag inspection module that receives a blocker tag constant unique identifier for the blocker tag through an electronic tag reader and searches a blocker tag database to determine whether the constant unique identifier of the blocker tag is authenticated; A blocker tag control module for performing a function of issuing a command to turn off a privacy bit of an object manager of a blocker tag identifier of the blocker tag through the electronic tag reader if it is determined that the blocker tag is not authenticated Included blocker tag exploit prevention system. A method of receiving electronic tag or blocker tag information attached to an article from an electronic tag reader and preventing abuse of the blocker tag, Determining whether the blocker tag is a valid blocker tag from the blocker tag information received from the electronic tag reader; Blocking the function of the blocker tag if the blocker tag is not a valid blocker tag. The method of claim 7, wherein Determining whether the blocker tag is a valid blocker tag, Determining whether an owner of the blocker tag is a legitimate owner; If the owner of the blocker tag is a legitimate owner, determining whether the blocker tag is an authorized blocker tag. The method of claim 8, And pre-registering authentication information including the owner information and the invariant unique identifier of the blocker tag used in the store, and identifying whether the electronic tag or the blocker tag is based on the owner information. A recording medium that records a method of receiving electronic tag or blocker tag information attached to an article from an electronic tag reader and preventing abuse of the blocker tag, Determining whether the blocker tag is a valid blocker tag from the blocker tag information received from the electronic tag reader; And a program having a function implemented to stop the function of the blocker tag if the blocker tag is not a valid blocker tag.

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