| 摘要 |
PROBLEM TO BE SOLVED: To provide a system and a device for obtaining in advance basic information, such as a name, a place of residence, etc. related to a user, safely and correctly without damaging user convenience, in a data communication service not requiring the submission of the basic information.SOLUTION: In the data communication service (a first service) not requiring the user registration, a user identifier for a second service that requires advance registration of user information is registered at the start of use of the first service. A device for identifying a communication service user includes means for searching for the user information registered in advance for the second service, using the user identifier for the second service registered in the first service, when the user information is required in the first service. |
