S p e c i f i c a t i o n s
Networkrequirements
The3M™SelfCheck™SystemcomeswithanintegratednetworkadapterandcommunicateswiththeILSoveranEthernet
network,whichrequiresthefollowingnetworkinfrastructure:
•ThestandardwiredEthernetadapterrequiressupportfor10BASE-Tor100BASE-TprotocolsandRJ-45cabletermination.
•TheoptionalwirelessEthernetadapterrequiressupportfor802.11gor802.11bprotocolsandmustmeettherequirements
listedinthefollowingtable:
SecurityNetworksecurityisthelibrary’sresponsibility.Securitymeasuresincludebutarenotlimitedtothefollowing:
•Separationfromthelibrary’spublicwirelessnetwork.
•SSIDtransmissionsuppressionsothattheaccesspointisnotreadilyvisibleorlikelytobeusedby
librarypatrons.
•EitherWPAorWEPencryption,withencryptionkeyrotationand/orMACaddressfiltering.
•Iffinancialtransactionsusingcreditordebitcardsareimplemented,thelibrarymustconformtoPayment
CardIndustry(PCI)datasecuritystandards(DSS)developedbythePCIStandardsCouncil.Requirements
canbefoundathttp://www.pcisecuritystandards.org/.
SignalStrengthTheSelfCheck™Systemmustbelocatedwithinoptimaloperationalrangeofthewirelessaccesspoint,as
determinedbyaccesspointsignalstrength,whichcanbeanalyzedandmeasuredusingsoftwareinstalled
withthewirelessnetworkadapter.
•Transmittedsignalstrengthfromthewirelessaccesspointmustbegreaterthan–27dBmasmeasuredat
theinstalledlocationoftheSelfCheckSystem.
•SoftwareRSSI(receivedsignalstrengthindicator)mustshowgreaterthan90%signalstrength(allfive
barsofRSSIaregreen)attheinstalledlocationoftheSelfCheckSystem.
GuidelinesThefollowingcanhelpensurerequiredsignalstrengthattheSelfChecklocation:
•InstalltheSelfCheck™Systemwithintwentyfeet(20ft.[6m])ofthewirelessaccesspoint.
•InstalltheSelfCheck™Systeminline-of-sightofthewirelessaccesspoint,withlittleornometalbetween
thetwo.Thiswillreduceradio-frequencyinterferenceormulti-pathdistortioneffects.
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