| 摘要 |
A network server apparatus is provided. The network server includes a storage unit configured to store a purchase list of a pre-registered user, a communicator configured to receive a list of products of interest of a first user, a searcher configured to compare a purchase list stored in the storage unit with the list of products of interest and identify a second user who has purchased a product recorded in the list of products of interest, and a controller configured to, when the second user is identified, notify that the second user is identified to a user terminal device of one of the second user and the first user. |
