A check-in system which manages check-ins of users to a prescribed space and manages wireless connection to a prescribed network disposed in the prescribed space. The check-in system comprises: a processing device; a connection management-controlling device that manages the wireless connection to the prescribed network; and an information-imparting device that imparts, to the prescribed first terminal, first wireless setting information which is associated with check-in information for a user to check in to the prescribed space and enables a prescribed first terminal of the user to perform wireless communication with the connection management-controlling device. In addition, a prescribed second terminal that is different to the prescribed first terminal is provided, using a processing device, with second wireless setting information for the second terminal from the prescribed first terminal which is wirelessly connected to the prescribed network. Thus, it is possible to easily manage: check-ins, to the prescribed space, of users who are intending to use the prescribed space; and the wireless connection to the network disposed in the prescribed space.
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