Objects in the real physical world and human activities, such as pictures, sounds, words, signatures, fingerprints and other information, are recorded and stored in two-dimensional codes through digital coding. The two-dimensional code aims to represent people's information ownership and realize the invitation of digital people to serve the outside world, that is, everyone transmits personal value or service to the outside world through social systems. Everyone can implant their own digital human DNA in their own behavior to generate a new two-dimensional code, which forms a chain with the code, thus becoming the behavior record of digital "digital people", that is, the movement track of digital people.
In the code chain digital ecology of digital human physical network based on the patent technology of scanning code digital communication access, the link between people and things is established through "digital person's initiative", and a new "code" is generated by superimposing digital person's DNA through "scanning code", and the code and code chain form a code chain to establish digital identity and digital link. Codes represent the ownership of identity information of people and things. People and things can implant their DNA into a code and store it in the code chain network to ensure the authenticity of the information.