Right, 0 fees on private chain. This could even be an update / replacement to existing tracking systems.
To save power, the device doesn’t transmit any data until activated externally through close-proximity radio, at which point, it connects to the node at the shipping center, sends data logs as transaction on private chain, then disconnects, returning to low power mode.
Delivery personnel use hand held devices connected via mobile or satellite service for the final scan upon delivery.
When the customer makes a data request for package data, they essentially just query the private chain address associated with the package.
Could have them pay extra to receive the data encrypted on public chain. Or save money to receive it unencrypted.
Just thoughts hammered out quickly. Could take this idea larger scale or lower scale, depending how big of a bite you want to take in revolutionizing package tracking.