Low Level Reader Protocol (LLRP)
Low Level Reader Protocol or LLRP is an EPCglobal standard that specifies an interface between RFID Readers and clients. It is designed as a standard in order for developers to have a common programmatic interface to RFID readers from different manufacturers.
LLRP provides means to command an RFID Reader to inventory RFID tags (read the EPC codes carried on tags), read tags (read other data on the tags apart from the EPC code), write tags, and execute other protocol-dependent access commands (such as ‘kill’ and ‘lock’ from EPCglobal Class 1 Generation 2).
Historically, RFID Middleware applications provide a common interface across multiple RFID readers. This standard is designed to reduce the requirement for such applications.