A system and method for limiting the reading out of data from an RFID tag
by requiring a reader of the tag to be authenticated by providing the
correct key to the tag, static or rotating, before the tag will transmit
data. The limitation of transmission is done irrespective of whether the
data is encrypted or not. The system and method may have a segmented or
tiered access scheme where segments or portions of the data stored in the
RFID tag are accessible by differing keys. Additionally, different
encryption keys or schemes may be employed to provide differing
encryption methods for the data in the differing segments or portions of
the data stored in the RFID tag.