To achieve paperless voting by abolishing a mark sheet and a voting card while eliminating a risk of an illegal voting participation by using a contract of the minor, a contract impersonating someone else, and an illegally opened bank account, for example, an illegally impersonated account.

The identity of an applicant for use registration is manually verified at a window of a stadium, and an individual number of a cellular phone unit 2 is registered. An information management server 3 accepts a temporary voting data registration from the registered cellular phone unit 2. A publicly-managed competition terminal device 1 collates the cellular phone unit 2, the voting data of which are temporarily registered and accepts an amount of vote, thereby finishing the voting. A refund is performed by collating the voting data of the voting information management server 3 with the voting data of the cellular phone unit 2.