Service for wrapping a RFID (Radio Frequency Identification) scanner unit.
Package Specification
The RFIDService provides its clients with events about any RFID tags that are
being scanned by the associated bluetooth RFID unit(s).
The remaining classes are for accessing the RFID device without using the
PalCom service. In particular, RFIDReader will send TagObject instances
to the registered RFIDObserver.
A convenience class RFIDDevice exists, that will start a PalCom device
on which a single RFIDService is running.