Compared with two-dimensional code, three-dimensional code has greater information capacity, the same identification convenience and better security. Its encoding method is to compile the text into a string of binary numbers.
Then the binary number string and image information are encoded into a set of arrays that can be interpreted by specific rules by combining the color content of the whole picture with a specific algorithm. Besides being readable by machine and equipment, image array can obtain some or even all text information only through human eye recognition.
Extended data:
Technical highlights of three-dimensional code
For computers, the size, fault tolerance, density and content of two-dimensional codes are different, but for ordinary people, they are all arrays of black and white points, and a single expression makes them unable to distinguish clearly.
Moreover, the open source production method of two-dimensional code allows criminals to aim at this loophole, generate two-dimensional code on the Internet by themselves, and tamper with the original two-dimensional code, such as stealing other people's property by changing the payment code, implanting viruses into smart phones by changing the convenience code, or directing information to fraud groups, causing security risks and seriously damaging social credibility.
Three-dimensional code is produced in closed source code, and every three-dimensional code can be inquired in China Coding Center, so as to realize the code filing system, which can be organically combined with numbers, patterns, etc., and has the characteristics of being difficult to forge, high in forgery cost and more secure.