COMMUNICATION TERMINAL, SERVER DEVICE, DATA MANAGEMENT SYSTEM, DATA MANAGEMENT METHOD AND DATA MANAGEMENT PROGRAM

摘要

A response is made to distribution data received by a communication terminal (portable telephone (4) or the like) through a network (public network (6)), the distribution data and the response action are traced and the distribution data during a predetermined time including the time at which the response action occurs and the data representing the response action are extracted, which is recorded as the traced data (TD). The traced data is transferred to a server device (signature server (12) through the network, and the data with the signature is transferred to the communication terminal and stored as the signed data.