Abstract: A system includes: a storage unit that associates face information of a user who requests delivery of a package with user information including information about a sender and a receiver of the package and store the associated information in advance; a camera that captures an image of the face of the user when the package is accepted; a unit that authenticates the captured face of the user; a unit that acquires the user information associated with the authenticated face information of the user from the storage unit; a unit that assigns an invoice number to the delivery of the package; a unit that transmits an instruction for issuance of an invoice including the information about the sender and the receiver included in the acquired user information and the assigned invoice number; and a printer that issues the invoice based on the instruction for issuance.