A service providing system comprises a connecting-part-equipped electric apparatus, a service providing device, and a settlement server. The connecting-part-equipped electric apparatus comprises a contactless identification tag, a connecting part and an electric apparatus. The contactless identification tag comprises a data receiving part and a data sending part, a data control part, a status notifying part and a display part. The service providing device comprises a data receiving part and a data sending part, a data control part, an authenticating part, an availability determining part, a determining result notifying part, a display part, a service providing part, a first connecting part and a charging fee calculating part.