Delivery system

A delivery system comprising:

• a delivery vehicle configured to be able to deliver a package in front of a front door of a dwelling unit in a complex housing including a shared door with automatic lock function that is installed at an entrance such that the shared door is able to be opened and closed, and that is able to be opened as unlock information managed by a key management system is input to an unlock input unit of the entrance via wireless communication;
• a delivery information acquisition unit that acquires information on delivery including delivery destination information on the package and information indicating presence or absence of a delivery instruction for leaving the package in front of the front door;
• a contact information acquisition unit that acquires contact information on a user of delivery destination;
• an unlock information acquisition unit that acquires the unlock information in the complex housing based on information from the key management system when determination is made that the delivery instruction for leaving the package in front of the front door is made and the delivery destination indicated by the delivery destination information is the dwelling unit in the complex housing based on information acquired by the delivery information acquisition unit;
• an unlock request unit that inputs the unlock information corresponding to the complex housing to the unlock input unit of the complex housing via the wireless communication based on information acquired by the unlock information acquisition unit when the delivery vehicle for delivering the package arrives at the complex housing and when determination is made that the delivery instruction for leaving the package in front of the front door is made based on information acquired by the delivery information acquisition unit;
• a record unit that records information on a date and time, and a location at which the unlock request unit inputs the unlock information to the unlock input unit;
• and
• a notification unit that notifies the user of the date and time at which the unlock information is input to the unlock input unit so as to deliver the package in front of the front door of the dwelling unit of the user based on information acquired by each of the delivery information acquisition unit and the contact information acquisition unit and information recorded in the record unit.