| 摘要 |
PROBLEM TO BE SOLVED: To provide a group creation system, a server, a terminal, and a program capable of suppressing participation in a group invited from a fraudulent user.SOLUTION: An invitation destination terminal 30 includes: an address book storage part 31 for storing the unique information of a user; a determination part 32 for, when the unique information of the user of an invitation source terminal 10 of invitation information to a group received with the invitation information is stored in the address book storage part 31, classifying the invitation information as a normal message, and for, when the unique information of the user of the invitation source terminal 10 is not registered in the address book storage part 31, classifying the invitation information as a spam message; and a selection part 33 for receiving selection input of whether to participate in the group in response to the invitation information, and for transmitting the selection result to a management server 20. |
