You can tell if it's the same author. If the authors' mac addresses are the same, they are generally considered to be the same IP. Electronic tender refers to an electronic tender that can replace paper tender and has the same function and legal effect as paper tender. Electronic bidding documents are required to have the same legal effect, which is the premise of the existence of electronic bidding documents. In addition, the electronic tender cannot be easily modified by others to ensure its security. Electronic bidding documents should also be converted into electronic file format that can be read like physical paper by some technology, and have the same appearance (clear and beautiful, consistent content) as paper bidding documents, without relying on the software itself.