Patent ID: 8413900

Claim:
A method for tracking each shipment of a group of shipments of a letter or package shipped by a shipper to an address of an addressee, wherein each of the shipments of the group is an individual letter or package identified by an individual bar code on the letter or package, wherein all the shipments of the group have been shipped essentially at the same time, said method comprising: tracking each of the shipments of the group by its individual bar code, wherein each of the individual bar codes comprises at least one part for identification of the shipper of the shipment, which is identical for all shipments of the group, and a shipment rank identification part of each shipment, which is variable for each of the shipments of the group, wherein the shipment rank identification part of the bar code of each of the shipments of the group is different from the shipment rank identification parts of the bar codes of each of the other shipments of the group.