Content delivery server, communication terminal, content delivery system, content delivery method, content delivery program, terminal control program and storage medium containing the program

摘要

There are provided a server machine and communication terminals communicatively connected to each other over a communication network. The server machine delivers software to a communication terminal. The server machine again delivers to the communication terminal delivered software which was delivered at least once to the communication terminal. Each communication terminal has an identification information transmitter section obtaining identification information by which users are identified. The server machine includes a delivery management database to manage the identification information and software delivery history information in an associated manner.