A network including a connection service providing system according to the present invention comprises mobile terminals 1 used by users, electronic devices 3, a wireless LAN base station 5, a connection-service-providing server 10, public network 2 for interconnecting a mobile terminal 1 and the connection-service-providing server 10, and a wide area network 4 for interconnecting a electronic device 3 and the connection-service-providing server 10. The connection-service-providing server 10 comprises a first identifier-acquisition unit 11, identifier-acquisition-time-instant measurement unit 12 (first time measurement unit), a second identifier-acquisition unit 13, a service-provision-start-time-instant measurement unit 14 (second time measurement unit), an authentication unit 15, and a connection control unit 16.