Tracking system

A tracking system, comprising:

• a gate including an information reader and gate circuitry, the gate being at least two gates including one gate placed at an entrance of a management area and the other gate placed at an entrance of an area, the management area being a place to keep an item to be lent, the area being included in another place to which the item is taken after being lent;
• a server;
• and
• an item management apparatus,
• the gate circuitry being configured to request accumulating, in the item management apparatus via the server,
• item identification information identifying the item and read from an information holding medium related to the item,
• user identification information identifying a user and read from another information holding medium related to the user, and
• gate identification information identifying the gate,
• wherein:
• the gate circuitry is configured to:
• read, via the information reader, the item identification information and the user identification information from the information holding medium of the item and said another information holding medium of the user;
• and
• transmit, to the server, the item identification information, the user identification information, and the gate identification information, wherein,
• in a case that different user identification information identifying a different user other than the user to whom the item has been lent is read with the item identification information, the gate circuitry is further configured to lock a door of the gate, and
• in a case that the user passes through the gate with the item at a date and time having a difference from a return deadline of the item determined by the item management apparatus that is within a predetermined number of days, the gate circuitry is further configured to make a reminder for the user to return the item,
• wherein:
• in a case that the user passes through the gate of the area with the item having been lent to the user at a time when the difference between the date and time and the return deadline of the item determined by the item management apparatus is within the predetermined number of days, the gate circuitry is configured to make the reminder for the user to return the item to prompt the user to return the item,
• in a case that the user is about to exit the area where the item has been used without the item on a day of the return deadline of the item, the gate circuitry is configured to make the reminder for the user to return the item and lock the door of the gate of the area, and
• in a case that the user exits the area with the item to be returned on the day of the deadline, the gate circuitry is configured to keep the door of the gate of the area unlocked to allow the user to pass through the gate of the area.