With the rapid development of computer technology, the digitalization and networking process of information technology, the information exchange between people is more and more convenient and faster, which makes more and more places and fields requiring personal authentication, so that identity Information security and automatic identification capabilities place higher demands. Identity technology is the most basic measure in information security and confidentiality, and it is also the first line of defense for identity information security. The digitization and recessiveness of identity information is the key technology of identity information security. Traditional identity recognition technology can not meet the requirements of the network age. It is urgent to find a technology to process and express identity information and make identity. Information cannot be easily acquired and utilized, and the technical characteristics of the barcode can meet this need.
Identity technology and its advantages and disadvantages
Identification involves multiple computer technologies. Currently, common technologies include: keys, identification cards, biometrics (fingerprints, palms, faces, sounds, blood vessels, retinas, DNA, etc.) and subconscious movements.
In terms of reliability, keys, identification cards and subconscious actions contain less information and the lowest reliability; fingerprints, palms, faces, sounds, blood vessels are rich in information, reliability is basically guaranteed; retina and DNA The amount of information is very large and the reliability is also the greatest.
In terms of stability, the stability of face, sound, blood, and subconscious movements is poor; the stability of the identification card, fingerprint, and palm shape is generally; the key is relatively stable; the stability of the retina (iris) and DNA is good.
In terms of personal safety, since the collection of the retina requires high intensity red light, causing damage to the human body, the retinal method has disappeared and replaced by the iris. In terms of convenience, the convenience of DNA is the worst, and it takes nearly a week for each verification and identification; the convenience of keys and identification cards is generally easy to lose; while the hands, fingerprints, faces and eyes are always available, anywhere. Read and enjoy the best.
In terms of response speed, when the storage amount reaches a certain number, the response speed of fingerprint, palm shape, sound, face, etc. becomes slower; the response speed of the key and the identification card is better; the response speed of the iris is not affected by the storage amount. Big. Several kinds of identification technologies have their own advantages and disadvantages. Keys and identification cards need to memorize, retain, lose or forget passwords, which will cause a lot of troubles; fingerprint, palm, sound and other biometric methods are popular, but the verification system is more complicated.
The trend of identification
At present, there are more and more places that need identification, and the security of identity has been tested by many parties. Identity technology faces security issues such as loss of documents, forgotten passwords, easy copying or cracking, and hacking attacks. Personally identifiable information printed on documents is easily stolen by criminals, which can seriously harm individual interests. loss. How to hide identity information in the certificate and how to check whether the identity of the person holding the document is legal is a problem that needs to be solved in the current identification process.
The bar code processing of identity information plays the role of hiding identity information. The application of two-dimensional code in identity recognition has the function of double encryption, which is a commonly accepted identity security technology. The biometric information is used to check the information of the holder and the information in the certificate, which plays a role in ensuring the legal identity of the holder.
Bar code technology
Barcode technology is a comprehensive technology based on digital information technology, which integrates data acquisition, processing, coding and recognition. It mainly studies how to represent data information in bar code and convert it into computer-recognizable characters. Barcode technology is currently the most widely used automatic identification technology, and its application speeds up data acquisition and information processing. The barcode is divided into a one-dimensional barcode and a two-dimensional code. One-dimensional bar code carries information in a single direction, and the information capacity is very limited. It only simply identifies the item, but cannot implement the specific description of the item. Its application depends entirely on the existence of the database, which makes the one-dimensional bar code Use is subject to greater restrictions. The two-dimensional code has the characteristics of large information capacity, high density, strong error correction ability, can express a variety of information, can be encrypted, and has high reliability of decoding. It is called a convenient data file and is very suitable for automatic identification and data acquisition. The bar code symbol itself hides the information represented, and the cipherability of the two-dimensional code further ensures the security of the identity information. After the identity information is encrypted and then compiled into a two-dimensional code, the second hiding of the identity information is realized.
Code selection
According to the realization principle and the difference of structure shape, the two-dimensional code is divided into two types: row row type and matrix type. The row-coding two-dimensional code is based on a one-dimensional barcode and is stacked into two or more rows as needed. As the number of rows increases, the row needs to be determined, and the decoding algorithm and software are not exactly the same as the one-dimensional barcode. Representative line-type QR codes are CODE49, CODE 16K, PDF417, etc. The row-and-row QR code can be decoded layer by layer by a linear scanner, or can be decoded by photographing and image processing. The matrix two-dimensional code is encoded in a rectangular space by different distributions of black and white pixels in the matrix. In the position of the corresponding element of the matrix, the occurrence of a point (square point, dot or other shape) represents a binary "1", and the occurrence of a point does not appear to represent a binary "0". The arrangement of points determines the matrix type two-dimensional barcode. The meaning of the representative. QR Code, Data Matrix, Maxi Code, Code One, CM (Compact Matrix) code, Hanxin code, etc. are all matrix type two-dimensional codes. Most matrix QR codes must be read by photography.
The Hanxin code independently developed by China belongs to the matrix type two-dimensional code. The Hanxin code is jointly developed by the China Article Coding Center and organized by relevant units, with complete independent intellectual property rights. At the beginning of 2011, the “Hanxin Code†standard work project was approved by the Board of Directors of the International Association of Automatic Identification Manufacturers and officially became the official code system standard of the International Association of Automatic Identification Manufacturers. Compared with other international two-dimensional codes, Hanxin code has the characteristics of strong Chinese character recognition, anti-distortion and staining, large information capacity and high density. In the popular application involving the identification of Chinese characters and the harsh use environment, Compared with other code systems, it has a strong competitive advantage. At present, Hanxin code has achieved large-scale application in the fields of medical treatment, food traceability and invoice.
In practical applications, a corresponding economical code can be selected as a carrier of identity information according to the number of identity information, language type, usage environment, identification device, and the like.
Identity technology and its advantages and disadvantages
Identification involves multiple computer technologies. Currently, common technologies include: keys, identification cards, biometrics (fingerprints, palms, faces, sounds, blood vessels, retinas, DNA, etc.) and subconscious movements.
In terms of reliability, keys, identification cards and subconscious actions contain less information and the lowest reliability; fingerprints, palms, faces, sounds, blood vessels are rich in information, reliability is basically guaranteed; retina and DNA The amount of information is very large and the reliability is also the greatest.
In terms of stability, the stability of face, sound, blood, and subconscious movements is poor; the stability of the identification card, fingerprint, and palm shape is generally; the key is relatively stable; the stability of the retina (iris) and DNA is good.
In terms of personal safety, since the collection of the retina requires high intensity red light, causing damage to the human body, the retinal method has disappeared and replaced by the iris. In terms of convenience, the convenience of DNA is the worst, and it takes nearly a week for each verification and identification; the convenience of keys and identification cards is generally easy to lose; while the hands, fingerprints, faces and eyes are always available, anywhere. Read and enjoy the best.
In terms of response speed, when the storage amount reaches a certain number, the response speed of fingerprint, palm shape, sound, face, etc. becomes slower; the response speed of the key and the identification card is better; the response speed of the iris is not affected by the storage amount. Big. Several kinds of identification technologies have their own advantages and disadvantages. Keys and identification cards need to memorize, retain, lose or forget passwords, which will cause a lot of troubles; fingerprint, palm, sound and other biometric methods are popular, but the verification system is more complicated.
The trend of identification
At present, there are more and more places that need identification, and the security of identity has been tested by many parties. Identity technology faces security issues such as loss of documents, forgotten passwords, easy copying or cracking, and hacking attacks. Personally identifiable information printed on documents is easily stolen by criminals, which can seriously harm individual interests. loss. How to hide identity information in the certificate and how to check whether the identity of the person holding the document is legal is a problem that needs to be solved in the current identification process.
The bar code processing of identity information plays the role of hiding identity information. The application of two-dimensional code in identity recognition has the function of double encryption, which is a commonly accepted identity security technology. The biometric information is used to check the information of the holder and the information in the certificate, which plays a role in ensuring the legal identity of the holder.
Bar code technology
Barcode technology is a comprehensive technology based on digital information technology, which integrates data acquisition, processing, coding and recognition. It mainly studies how to represent data information in bar code and convert it into computer-recognizable characters. Barcode technology is currently the most widely used automatic identification technology, and its application speeds up data acquisition and information processing. The barcode is divided into a one-dimensional barcode and a two-dimensional code. One-dimensional bar code carries information in a single direction, and the information capacity is very limited. It only simply identifies the item, but cannot implement the specific description of the item. Its application depends entirely on the existence of the database, which makes the one-dimensional bar code Use is subject to greater restrictions. The two-dimensional code has the characteristics of large information capacity, high density, strong error correction ability, can express a variety of information, can be encrypted, and has high reliability of decoding. It is called a convenient data file and is very suitable for automatic identification and data acquisition. The bar code symbol itself hides the information represented, and the cipherability of the two-dimensional code further ensures the security of the identity information. After the identity information is encrypted and then compiled into a two-dimensional code, the second hiding of the identity information is realized.
Code selection
According to the realization principle and the difference of structure shape, the two-dimensional code is divided into two types: row row type and matrix type. The row-coding two-dimensional code is based on a one-dimensional barcode and is stacked into two or more rows as needed. As the number of rows increases, the row needs to be determined, and the decoding algorithm and software are not exactly the same as the one-dimensional barcode. Representative line-type QR codes are CODE49, CODE 16K, PDF417, etc. The row-and-row QR code can be decoded layer by layer by a linear scanner, or can be decoded by photographing and image processing. The matrix two-dimensional code is encoded in a rectangular space by different distributions of black and white pixels in the matrix. In the position of the corresponding element of the matrix, the occurrence of a point (square point, dot or other shape) represents a binary "1", and the occurrence of a point does not appear to represent a binary "0". The arrangement of points determines the matrix type two-dimensional barcode. The meaning of the representative. QR Code, Data Matrix, Maxi Code, Code One, CM (Compact Matrix) code, Hanxin code, etc. are all matrix type two-dimensional codes. Most matrix QR codes must be read by photography.
The Hanxin code independently developed by China belongs to the matrix type two-dimensional code. The Hanxin code is jointly developed by the China Article Coding Center and organized by relevant units, with complete independent intellectual property rights. At the beginning of 2011, the “Hanxin Code†standard work project was approved by the Board of Directors of the International Association of Automatic Identification Manufacturers and officially became the official code system standard of the International Association of Automatic Identification Manufacturers. Compared with other international two-dimensional codes, Hanxin code has the characteristics of strong Chinese character recognition, anti-distortion and staining, large information capacity and high density. In the popular application involving the identification of Chinese characters and the harsh use environment, Compared with other code systems, it has a strong competitive advantage. At present, Hanxin code has achieved large-scale application in the fields of medical treatment, food traceability and invoice.
In practical applications, a corresponding economical code can be selected as a carrier of identity information according to the number of identity information, language type, usage environment, identification device, and the like.
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