An RFID tag has a memory, an RF transceiver that supports long range RF
communications with a long range reader, and an interface that supports
short range communications with a short range reader over a secure link.
The RF transceiver can be used to transmit an ID stored in the memory of
the tag to a long range reader, and the interface can be used to transmit
sensitive history information to a short range reader over the secure
link. The ID uniquely identifies an article to which the tag is attached,
and the history information provides environmental data, and/or
maintenance data, and/or shipping data, and/or inventory data, and/or
production data, etc. about the article.