This document specifies an interface between RFID Readers and Clients. The
interface protocol is called low-level because it provides control of RFID air
protocol operation timing and access to air protocol command parameters. The
design of this interface recognizes that in some RFID systems, there is a
requirement for explicit knowledge of RFID air protocols and the ability to
control Readers that implement RFID air protocol communications. It also
recognizes that coupling control to the physical layers of an RFID
infrastructure may be useful for the purpose of mitigating RFID interference.