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  <xs:element name="DisposalGroupIncludingDiscontinuedOperationIncreaseDecreaseInInventory" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="auid_DisposalGroupIncludingDiscontinuedOperationIncreaseDecreaseInInventory"/>
  <xs:element name="DisposalGroupIncludingDiscontinuedOperationIncreaseDecreaseInAccountsPayableAndAccruedLiabilities" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="auid_DisposalGroupIncludingDiscontinuedOperationIncreaseDecreaseInAccountsPayableAndAccruedLiabilities"/>
  <xs:element name="DisposalGroupIncludingDiscontinuedOperationIncreaseDecreaseInDeferredRevenue" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="auid_DisposalGroupIncludingDiscontinuedOperationIncreaseDecreaseInDeferredRevenue"/>
  <xs:element name="BasisofPresentationDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="auid_BasisofPresentationDetailsTable"/>
  <xs:element name="AdditionalFinancing" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="auid_AdditionalFinancing"/>
  <xs:element name="RelatedToOtherNoncancelableContractedAmounts" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="auid_RelatedToOtherNoncancelableContractedAmounts"/>
  <xs:element name="IntangibleAssetsNetOtherthanGoodwillDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="auid_IntangibleAssetsNetOtherthanGoodwillDetailsTable"/>
  <xs:element name="AccountsPayableandAccruedExpensesDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="auid_AccountsPayableandAccruedExpensesDetailsTable"/>
  <xs:element name="AccountsPayableandAccruedExpensesDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="auid_AccountsPayableandAccruedExpensesDetailsLineItems"/>
  <xs:element name="SeveranceExpensesAmountPaid" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="auid_SeveranceExpensesAmountPaid"/>
  <xs:element name="WorkingCapitalFaciltiyDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="auid_WorkingCapitalFaciltiyDetailsTable"/>
  <xs:element name="AggregateAmount" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="auid_AggregateAmount"/>
  <xs:element name="ConvertibleNotesPayableDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="auid_ConvertibleNotesPayableDetailsTable"/>
  <xs:element name="IssuedOfCommonStockOriginationFee" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="auid_IssuedOfCommonStockOriginationFee"/>
  <xs:element name="CommonStockInterest" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="auid_CommonStockInterest"/>
  <xs:element name="EstimatedGrantDateFairValue" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="auid_EstimatedGrantDateFairValue"/>
  <xs:element name="RelatedPartyTransactionsDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="auid_RelatedPartyTransactionsDetailsTable"/>
  <xs:element name="PercentageOfOutstandingShares" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="auid_PercentageOfOutstandingShares"/>
  <xs:element name="AmendedAmount" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="auid_AmendedAmount"/>
  <xs:element name="AnnualBaseSalaryAmount" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="auid_AnnualBaseSalaryAmount"/>
  <xs:element name="PerfomanceBasedBonusAmount" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="auid_PerfomanceBasedBonusAmount"/>
  <xs:element name="StockholdersEquityDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="auid_StockholdersEquityDetailsTable"/>
  <xs:element name="DiscontinuedOperationsandAssetsHeldforSaleDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="auid_DiscontinuedOperationsandAssetsHeldforSaleDetailsTable"/>
  <xs:element name="SaleOfCardPlus" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="auid_SaleOfCardPlus"/>
  <xs:element name="CardPlusAmountReceived" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="auid_CardPlusAmountReceived"/>
  <xs:element name="CommitmentsandContingenciesDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="auid_CommitmentsandContingenciesDetailsTable"/>
  <xs:element name="MonthlyRentCostForOffice" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="auid_MonthlyRentCostForOffice"/>
  <xs:element name="OfficeMonthlyLeaseCost" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="auid_OfficeMonthlyLeaseCost"/>
  <xs:element name="ARFacilityAgreementMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="auid_ARFacilityAgreementMember"/>
  <xs:element name="AchievingIncrementsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="auid_AchievingIncrementsMember"/>
  <xs:element name="AcquiredAndDevelopedSoftwareMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="auid_AcquiredAndDevelopedSoftwareMember"/>
  <xs:element name="AsRevisedMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="auid_AsRevisedMember"/>
  <xs:element name="CardsPlusBusinessInSouthAfricaMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="auid_CardsPlusBusinessInSouthAfricaMember"/>
  <xs:element name="CardsPlusMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="auid_CardsPlusMember"/>
  <xs:element name="ChiefTechnologyOfficerMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="auid_ChiefTechnologyOfficerMember"/>
  <xs:element name="ContinuingOperationsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="auid_ContinuingOperationsMember"/>
  <xs:element name="ConvertibleNotesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="auid_ConvertibleNotesMember"/>
  <xs:element name="DiscontinuedOperationsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="auid_DiscontinuedOperationsMember"/>
  <xs:element name="GarchikMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="auid_GarchikMember"/>
  <xs:element name="InitialAnnualSalaryMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="auid_InitialAnnualSalaryMember"/>
  <xs:element name="LaborReductionPlanMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="auid_LaborReductionPlanMember"/>
  <xs:element name="LegacyAuthenticationServicesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="auid_LegacyAuthenticationServicesMember"/>
  <xs:element name="LessThanOrEqual3200Member" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="auid_LessThanOrEqual3200Member"/>
  <xs:element name="LessThanOrEqual32085600Member" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="auid_LessThanOrEqual32085600Member"/>
  <xs:element name="LessThanOrEqual56088000Member" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="auid_LessThanOrEqual56088000Member"/>
  <xs:element name="LessThanOrEqual800812776Member" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="auid_LessThanOrEqual800812776Member"/>
  <xs:element name="MadisonGlobalPartnersLLCMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="auid_MadisonGlobalPartnersLLCMember"/>
  <xs:element name="MadisonIIILLCMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="auid_MadisonIIILLCMember"/>
  <xs:element name="MessrsJosephTrelinMichaelKoehnemanMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="auid_MessrsJosephTrelinMichaelKoehnemanMember"/>
  <xs:element name="MrDaguroMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="auid_MrDaguroMember"/>
  <xs:element name="MrGarchikMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="auid_MrGarchikMember"/>
  <xs:element name="MrSellittoMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="auid_MrSellittoMember"/>
  <xs:element name="MrStephenJGarchikMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="auid_MrStephenJGarchikMember"/>
  <xs:element name="MrSzokeMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="auid_MrSzokeMember"/>
  <xs:element name="MsJacquelineWhiteMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="auid_MsJacquelineWhiteMember"/>
  <xs:element name="MsPhamMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="auid_MsPhamMember"/>
  <xs:element name="MultiPayBusinessInColombiaMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="auid_MultiPayBusinessInColombiaMember"/>
  <xs:element name="MultiPayMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="auid_MultiPayMember"/>
  <xs:element name="OriginalFacilityAgreementMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="auid_OriginalFacilityAgreementMember"/>
  <xs:element name="TPGMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="auid_TPGMember"/>
  <xs:element name="VerifiedSoftwareLicenseMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="auid_VerifiedSoftwareLicenseMember"/>
  <xs:element name="ConvertibleNotesPayableLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="auid_ConvertibleNotesPayableLineItems"/>
  <xs:element name="MultiPayAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="auid_MultiPayAbstract"/>
  <xs:element name="WorkingCapitalFaciltiyAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="auid_WorkingCapitalFaciltiyAbstract"/>
  <xs:element name="WorkingCapitalFaciltiyLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="auid_WorkingCapitalFaciltiyLineItems"/>
  <xs:element name="DocumentAndEntityInformationAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="auid_DocumentAndEntityInformationAbstract"/>
</xs:schema>
