Patent ID: 7331519

Claim:
A multiple signature system for verifying a delivery route for items comprising: at least one signature device at a location for generating signature information on items; and at least one signature verification device for verifying the signature information on received items, wherein said at least one signature device and said at least one signature verification device are connected to communicate with each other, and wherein said at least one signature device comprises: an item selection input section for accepting selection of a group of items formed by combining a delivered item delivered from at least one supplier and an item generated at the signature device location; a path verification information updating section for updating path verification information for verifying a delivery route included in signature information of the delivered; a signature information preparation section for preparing new signature information from a signature prepared by said at least one signature device and the updated path verification information with respect to a selected item group; and a signature information transmitting section for transmitting the new signature information to the at least one signature verification device, and wherein the at least one signature verification device comprises: a signature information receiving section for receiving the new signature information; and a signature information verification section for verifying delivery routes for all the items included in the selected item group based on the new signature information.