Tracking refers to the tracking of freight, parcels and mail. This is also referred to as Track & Trace. With the help of tracking data, it is possible to trace which milestones a shipment has passed from the starting point to the destination and where a freight shipment or another delivery is currently located. This creates transparency in the transportation process and opens up opportunities for optimizing complex supply chains.The shipper provides the freight with labels on which certain accompanying information are documented: Information about the sender, Information about the recipient, Steering information. For air freight, the transport company uses a cargo label with the following information: Barcode, Airway bill number, Origin / destination, number of pieces, weight. For shipping companies, it is important to know exactly when a shipment will be picked up and when it will arrive at its destination. Tracking ensures that all parties involved know the exact shipment status of a shipment – they know where a shipment is at all times.