|The Iris ID (formally LG Iris) ICU(Identity Controller) is the system component assigned to one or more portals where authenticated persons access rights are securely retained and managed. The ICU also ensures that portal operation can continue if the re is an interruption in communication with the host computer. In such circumstances, the ICU retains the records of portal activity, then automatically updates the host upon resumption of host communication. Every ICU in the 4000/7000 series runs on a LINUX OS for added reliability. Independent and fault tolerant, ICUs are connected up to 4 iCAMs and handle up to 100,000 users.