C•CURE 800/8000 Software Configuration Guide - Tyco Security ...

AntipassbackAntipassbackAntipassback prevents a person from passing back a card to another person touse, and detects when someone tailgates, or follows another person through adoor without using their own card. The last admit area of a cardholder isreported to the host and is displayed at the Monitoring Station, letting youtrack the cardholder’s location. However, this area may not be anantipassback area.A passback violation 1 occurs when a cardholder attempts to enter an areathat, according to C•CURE 800/8000, he is already in. This can occur if thecardholder passes his card to another person who uses it to try to enter thesame area. It can also occur if a cardholder exits an antipassback area withoutpresenting his card and tries to reenter the area. In both cases, the systemfinds that the cardholder is already in the antipassback area and therefore willnot admit.A tailgate violation 1 occurs when a cardholder tries to leave an area that,according to C•CURE 800/8000, he is not in. This can occur if the cardholderhas tailgated or followed another cardholder into the area without using hisaccess card. He then uses his access card to exit the area.Global AntipassbackGlobal (Cross Cluster) Antipassback allows you to share antipassbackinformation between multiple iSTAR clusters. This feature works on top ofCluster Antipassback in which the cluster members always ask the Master forpassback information. The passback information is now shared between theclusters to enforce antipassback.Appropriate passback requests are forwarded to the Host who then retrievesthe information from the appropriate owner and passes it on to the masterwho then passes it on to the member at which the request was made. Themaster of the cluster that this member belongs to now takes up the ownershipof the card. If the card owner cluster is imperfect (where all members of thecluster are not communicating), then the user-defined failure mode will beenforced.1. This violation occurs only if all access, either to or from the antipassback area, is monitored byreaders.2–24 C•CURE 800/8000 Software Configuration Guide