In addition, the intermediary server 100 may provide the information provider with listed promotion information and reward information on request so that the scope of privacy information contracted for each information purchaser can be modified, deleted, and added from time to time. This will allow the information provider to change the scope of privacy information in the future through reward and promotion methods deposited and promoted by the information purchaser, so that the information purchaser can use more privacy information. This may result in increased safety and reward for the use of privacy information for the information provider, and the information purchaser will be able to increase the scope of privacy information and the number of information providers available for promotion, thereby increasing the stability and publicity.

Hereinafter, the intermediary server used in the exemplary embodiment of the present disclosure will be described in more detail.

FIG. 2 is a block diagram specifically illustrating the constitution of the intermediary server in FIG. 1. A transaction intermediary server 100 illustrated in FIG. 2 is according to the exemplary embodiment of the present disclosure, and the constituents are not limited to the exemplary embodiment illustrated in FIG. 2, and some constituents can be added, changed, or deleted as needed.

As illustrated in FIG. 2, the intermediary server 100 includes a transceiver 110, a privacy information collection unit 120, a purchase information collection unit 130, a list generation unit 140, a scope setting unit 150, a reward amount calculation unit 160, an authentication unit 170, and a storage unit 180.

The transceiver 110 performs mutual communication with both the information provider terminal 10 and the information purchaser terminal 20 through wired and wireless communication methods through a network. That is, the transceiver 110 may perform mutual communication between the information provider terminal 10 and the information purchaser terminal 20 so that privacy information transaction can be made between the information provider and the information purchaser.

The privacy information collection unit 120 may collect by being input the privacy information such as the name, gender, address, phone number, mail address, income, hobby, job, age, family relationship, and account number, etc. of the information provider from the information provider terminal 10 connected through the transceiver 110. In this case, the privacy information includes information input by the information provider when signing up for membership, but the information is not limited thereto, and may include the privacy information of the information provider using big data.

The purchase information collection unit 130 may receive and collect predetermined reward information according to the scope of the promotion information and privacy information of the information purchaser in which the collected privacy information is used from the information purchaser terminal 20 connected through the transceiver 110. Here, the promotion information may include various advertisements, events, loans, goods advertisements, etc. using the privacy information, and the reward information may include reward amounts such as amounts, points, coupons, etc. predetermined according to the scope of privacy information.

The list generation unit 140 may generate the purchase information list by listing the reward information determined according to the content of promotion information and the scope of privacy information for each information purchaser using the promotion information and reward information collected by the purchase information collection unit 130. In addition, the list generation unit 140 may provide the generated purchase information list to the information provider terminal 10 through the transceiver 110.

FIG. 3 is the exemplary embodiment illustrating the constitution of a purchase information list generated by the list generation unit illustrated in FIG. 2, and as illustrated in FIG. 3, the purchase information list displays the reward information determined according to the privacy information usage scope determined by the information purchaser, and a selection window may be configured so that one or more of the displayed reward information can be selected by the information provider.

In this case, the more selected the selection window configured for each information purchaser, the higher the reward information paid to the information provider, that is, the reward amount. In addition, all types of privacy information corresponding to the selection window may be set to different reward amounts.

The scope setting unit 150 may set a scope of providing information purchaser and privacy information selected by the information provider, through a purchase information list provided to the information provider terminal 10. In this case, the scope of the selected privacy information may be enlarged and set to the scope of the household (family) of the information provider.

Since the amount of reward paid from the information purchaser varies depending on the type of privacy information and the number of privacy information selected, the information provider will be able to choose appropriately according to their will. In addition, when the privacy information is used for public relations, the information provider may receive a reward amount for the amount, points, coupons, etc. predetermined according to the limited scope of privacy information.

Like this, since the information provider may select the information purchaser who wants to sell the privacy information through the purchase information list in the scope setting unit 150 and may limit the scope of privacy information to be sold, the information provider can only make the privacy information available to legitimate information purchasers of the her choice within the scope of the (consent information purchasers, privacy information, etc.), and may confirm the privacy information. This can prevent the illegal information purchaser or the legal information purchaser from obtaining their privacy information and indiscriminately using it.

The reward amount calculation unit 160 may calculate the reward amount paid from the information purchaser to the information provider based on the information purchaser and the privacy information scope of each information purchaser selected by the scope setting unit 150.

In this case, the calculated reward amount may include an amount, points, coupons, etc., and in this case, the reward amount is delivered directly by the information purchaser to the information provider without involvement of the intermediary server 100. Therefore, since the information provider and the information purchaser have no intermediate fee for handling the reward amount, the information provider may receive a high reward amount, and the information purchaser may incur a small promotional cost.

The authentication unit 170 verifies and authenticates the privacy information provided by an information provider, and promotion information and reward information of an information purchaser. That is, the authentication unit