Package tracking

[6] Initially, a piece of mail was identified by the sending date and the addresses of the sender and the recipient; later tracking numbers came to be used for identification.

This approach has been used for package tracking provided by the delivery companies, such as Deutsche Post, United Parcel Service, AirRoad, or FedEx.

[8] As package tracking technologies have evolved, it has also become possible to increase the amount of information and metrics returned about a package and to report beside its location also temperature, humidity, pressure, acceleration, elevation and exposure to light at different time points—factors that are important for delicate or perishable contents.

With improved data processing, e-mail programs were able to automatically detect tracking numbers in messages[12] and receipts and print the real time location of the package.

These systems log in the packages that arrive by recording the items from different carrier companies, the time the delivery is made, the name of the recipient, tracking number and other data.