PROBLEM TO BE SOLVED: To provide a distribution object for investigations and an investigation method and an investigation system using the distribution object for the investigation by which a human flow investigation or the like can be performed without the need of lots of investigators and time and an investigated result can be quickly provided. SOLUTION: This distribution object for the investigation provided with an IC tag where a specified identification code segmented by the distribution place, the distribution time band, the sex of an investigation object person or the distinction of an adult and a child is recorded is used. The distribution object for the investigation is distributed to the investigation object person at a specified place and readers for reading the information of the specified identification code transmitted from the IC tag attached to the distribution object for the investigation held by the investigation object person without contacting are installed at plural investigation object places. The information of the identification code read when the investigation object person passes through the investigation object place and the termination time of the information are uploaded to a server in real time, gathered and analyzed and the tendency of the investigation object person is investigated.
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