PROBLEM TO BE SOLVED: To reduce the psychological burden by reducing the processing load of data analysis and not directly attaching the sensor to the body, and to determine not only the presence or absence of the body fluid but also the type of the body fluid. SOLUTION: A sensor unit 10A having a five-layer structure is constructed by stacking insulating cloths 111 and 121, conductive patterns 112a and 122a, and an insulating sheet 13, and tears or sweat adhere to the sensor unit 10A. At this time, the resistance value between the conductive patterns 112a and 122a is detected by the resistance value measuring unit 21a, and the sensor data including the information indicating the detection time or period, the presence / absence of body fluid and the type of body fluid. Is transferred to the information processing server 4 via the user terminal 2. Based on the information indicating the type of body fluid and the information indicating the detection time or period included in the sensor data, the information processing server 4 determines in which scene of the movie or drama the user is excited about or is excited. presume. [Selection diagram] Figure 2【課題】データ解析の処理負荷が少なく、かつ身体へのセンサの直接的な装着を不要にして心理的負担の軽減を図り、体液の有無だけでなく体液の種類も判定可能とする。【解決手段】絶縁性布体１１１，１２１と導電性パターン１１２ａ，１２２ａと絶縁性シート１３とを重ね合わせて５層構造のセンサユニット１０Ａを構成し、このセンサユニット１０Ａに涙又は汗が付着したときの上記導電性パターン１１２ａ，１２２ａ間の抵抗の低下を抵抗値計測部２１ａにより検出して、その検出時刻又は期間を表す情報と体液の付着の有無と体液の種類を表す情報を含むセンサデータを、利用者端末２を介して情報処理サーバ４へ転送する。情報処理サーバ４では、上記センサデータに含まれる体液の種類を表す情報と検出時刻又は期間を示す情報をもとに、利用者が鑑賞中の映画又はドラマのどのシーンで感動又は興奮したのかを推定する。【選択図】図２
