Abstract: A store system includes an authentication device configured to obtain personal information from a part of a body of a user, transmit the personal information to a first server, and receive authentication of the personal information from the first server; a gate control apparatus configured to open a gate so that the user may enter or exit a store, when the authentication device receives the authentication; and a checkout device configured to obtain personal information from a part of a body of the user, transmit the personal information to a second server, and pay a product price when receiving authentication of the personal information from the second server.

Abstract: An unmanned store system includes an authentication device configured to obtain personal information from a part of a body of a user, transmit the personal information to a first server, and receive authentication of the personal information from the first server; a gate control apparatus configured to open a gate so that the user may enter or exit a store, when the authentication device receives the authentication; and an unmanned checkout device configured to obtain personal information from a part of a body of the user, transmit the personal information to a second server, and pay a product price when receiving authentication of the personal information from the second server.