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  <xsd:element abstract="true" id="bkyi_CustomerABAndCMember" name="CustomerABAndCMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_CustomerAMember" name="CustomerAMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_CustomerBMember" name="CustomerBMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_CustomerCMember" name="CustomerCMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_DebtInstrumentCarryingAmountBeforeConversion" name="DebtInstrumentCarryingAmountBeforeConversion" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="bkyi_DebtInstrumentConvertibleBeneficialConversionFeaturePerShare" name="DebtInstrumentConvertibleBeneficialConversionFeaturePerShare" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_DebtInstrumentConvertiblePremiumPaymentPercentage" name="DebtInstrumentConvertiblePremiumPaymentPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant"/>
  <xsd:element id="bkyi_DebtInstrumentConvertibleTotalAmountConverted" name="DebtInstrumentConvertibleTotalAmountConverted" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element id="bkyi_DebtInstrumentCovenantSharesToBePaidCommitmentFeeRepaidPriorToMaturity" name="DebtInstrumentCovenantSharesToBePaidCommitmentFeeRepaidPriorToMaturity" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant"/>
  <xsd:element id="bkyi_DebtInstrumentDeemedDividendExpense" name="DebtInstrumentDeemedDividendExpense" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_DebtInstrumentNumberOfInstallments" name="DebtInstrumentNumberOfInstallments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant"/>
  <xsd:element id="bkyi_DebtInstrumentPeriodicPaymentPrincipalDueIn180Days" name="DebtInstrumentPeriodicPaymentPrincipalDueIn180Days" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_DebtInstrumentPeriodicPaymentPrincipalDueIn270Days" name="DebtInstrumentPeriodicPaymentPrincipalDueIn270Days" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_DebtInstrumentUnamortizedDiscountAndBeneficialConversionFeature" name="DebtInstrumentUnamortizedDiscountAndBeneficialConversionFeature" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element id="bkyi_DeemedDividendRelatedToDownRoundFeatures" name="DeemedDividendRelatedToDownRoundFeatures" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_DocumentAndEntityInformation" name="DocumentAndEntityInformation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_EquityWarrantsMember" name="EquityWarrantsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_ExercisePriceGreaterThanAverageMarketPriceOfCommonSharesMember" name="ExercisePriceGreaterThanAverageMarketPriceOfCommonSharesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_ExercisePriceLessThanAverageMarketPriceOfCommonSharesMember" name="ExercisePriceLessThanAverageMarketPriceOfCommonSharesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_FactoredAccountsReceivableFactoredAmount" name="FactoredAccountsReceivableFactoredAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element abstract="true" id="bkyi_FactoredAccountsReceivableMember" name="FactoredAccountsReceivableMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_FactoredAccountsReceivableOriginalInvoiceValue" name="FactoredAccountsReceivableOriginalInvoiceValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element id="bkyi_FactoringArrangementMinimumAmountOfAccountsReceivablePerQuarter" name="FactoringArrangementMinimumAmountOfAccountsReceivablePerQuarter" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_FactoringFees" name="FactoringFees" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_FactoringFeesPercent" name="FactoringFeesPercent" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant"/>
  <xsd:element id="bkyi_FactoringFeesTableTextBlock" name="FactoringFeesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_FactoringTextBlock" name="FactoringTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_February2020NoteMember" name="February2020NoteMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_GovernmentGrantIncome" name="GovernmentGrantIncome" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_HardwareMember" name="HardwareMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_IncreaseDecreaseInCapitalizedContractCosts" name="IncreaseDecreaseInCapitalizedContractCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_IncreaseDecreaseInOperatingLeaseLiability" name="IncreaseDecreaseInOperatingLeaseLiability" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_IncreaseDecreaseInSoftwareLicenseRights" name="IncreaseDecreaseInSoftwareLicenseRights" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_InvestmentInHeldToMaturityDebtSecuritiesTerm" name="InvestmentInHeldToMaturityDebtSecuritiesTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_InvestmentInHeldtomaturityDebtSecuritiesInterestRate" name="InvestmentInHeldtomaturityDebtSecuritiesInterestRate" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant"/>
  <xsd:element abstract="true" id="bkyi_InvestorWarrantMember" name="InvestorWarrantMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_January2020NoteMember" name="January2020NoteMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_June2020NoteMember" name="June2020NoteMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_LesseeOperatingLeaseCostsAssetsAndLiabilitiesTableTextBlock" name="LesseeOperatingLeaseCostsAssetsAndLiabilitiesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_LesseeOperatingLeaseSupplementalCashFlowInformationTableTextBlock" name="LesseeOperatingLeaseSupplementalCashFlowInformationTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_LimitOfBond" name="LimitOfBond" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element abstract="true" id="bkyi_LindGlobalMacroFundLPMember" name="LindGlobalMacroFundLPMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_May2020NoteMember" name="May2020NoteMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_MonthlyCashRequirementToConductOperationsAndPayDividendObligations" name="MonthlyCashRequirementToConductOperationsAndPayDividendObligations" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_MrMichaelDepasqualeMember" name="MrMichaelDepasqualeMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_MrWongKwokFongMember" name="MrWongKwokFongMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_NasdaqCapitalMarketListingRequirementsTextBlock" name="NasdaqCapitalMarketListingRequirementsTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_NoteToFinancialStatementDetailsTextual" name="NoteToFinancialStatementDetailsTextual" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_NotesReceivableTextBlock" name="NotesReceivableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_NotesToFinancialStatements" name="NotesToFinancialStatements" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_NotesToFinancialStatementsAbstract" name="NotesToFinancialStatementsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_OperatingLeaseLiabilityAssumedUnderAsc842" name="OperatingLeaseLiabilityAssumedUnderAsc842" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_OperatingLeaseRightofuseAssetAmortizationExpenseReversalOfExpense" name="OperatingLeaseRightofuseAssetAmortizationExpenseReversalOfExpense" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_PaycheckProtectionProgramCaresActMember" name="PaycheckProtectionProgramCaresActMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_PaymentsOfStockIssuanceCostsBankerFees" name="PaymentsOfStockIssuanceCostsBankerFees" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_PaymentsOfStockIssuanceCostsCommitmentFees" name="PaymentsOfStockIssuanceCostsCommitmentFees" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_PaymentsOfStockIssuanceCostsLegalFees" name="PaymentsOfStockIssuanceCostsLegalFees" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_PercentageOfAccountsReceivableRemittedByFactor" name="PercentageOfAccountsReceivableRemittedByFactor" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant"/>
  <xsd:element id="bkyi_PercentageOfRemainingBalanceOwnedReserved" name="PercentageOfRemainingBalanceOwnedReserved" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_PercentageOfSupportAndMaintenanceRevenueToLicenseCost" name="PercentageOfSupportAndMaintenanceRevenueToLicenseCost" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_PistolstarMember" name="PistolstarMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_PlacementFeePercentOfAggregateGrossProceeds" name="PlacementFeePercentOfAggregateGrossProceeds" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_PrefundedWarrantsMember" name="PrefundedWarrantsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_PrivateInvestorSPAMember" name="PrivateInvestorSPAMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_PromissoryNoteMember" name="PromissoryNoteMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_ProprietarySoftwareMember" name="ProprietarySoftwareMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_PublicOfferingMember" name="PublicOfferingMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_ReferralFeeWarrantsMember" name="ReferralFeeWarrantsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_RelatedPartyAgreementTerm" name="RelatedPartyAgreementTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_RelatedPartyTransactionMaximumRevenueToTriggerPaymentOfSalesIncentiveFee" name="RelatedPartyTransactionMaximumRevenueToTriggerPaymentOfSalesIncentiveFee" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="bkyi_RelatedPartyTransactionMaximumRevenueWarrantsIssuable" name="RelatedPartyTransactionMaximumRevenueWarrantsIssuable" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="bkyi_RelatedPartyTransactionRevenueNeededToTriggerPaymentOfSalesIncentiveFee" name="RelatedPartyTransactionRevenueNeededToTriggerPaymentOfSalesIncentiveFee" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="bkyi_RelatedPartyTransactionRevenueToTriggerPaymentOfSalesIncentiveFeePercentOfNetIncome" name="RelatedPartyTransactionRevenueToTriggerPaymentOfSalesIncentiveFeePercentOfNetIncome" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_RelatedPartyTransactionSalesIncentiveFeeForEach5MillionRevenue" name="RelatedPartyTransactionSalesIncentiveFeeForEach5MillionRevenue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_RightofuseAssetAdditionUnderAsc842" name="RightofuseAssetAdditionUnderAsc842" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_SalesIncentiveAgreementWithTTIMember" name="SalesIncentiveAgreementWithTTIMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_SecuredRedeemableConvertibleNoteMember" name="SecuredRedeemableConvertibleNoteMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_SeniorSecuredConvertibleNoteMember" name="SeniorSecuredConvertibleNoteMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_September2015WarrantsMember" name="September2015WarrantsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_SeriesA1ConvertiblePreferredStockMember" name="SeriesA1ConvertiblePreferredStockMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_SeriesB1ConvertiblePreferredStockMember" name="SeriesB1ConvertiblePreferredStockMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_ShareBasedCompensationExcludingDirectorsFees" name="ShareBasedCompensationExcludingDirectorsFees" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_SharebasedCommitmentFees" name="SharebasedCommitmentFees" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsGrantsInPeriodFairValue" name="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsGrantsInPeriodFairValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_SoftwareLicenseRights" name="SoftwareLicenseRights" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element abstract="true" id="bkyi_SoftwareLicenseRightsMember" name="SoftwareLicenseRightsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_SoftwareLicenseRightsNoncurrent" name="SoftwareLicenseRightsNoncurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element id="bkyi_StockBasedFeesToDirectorsAndConsultants" name="StockBasedFeesToDirectorsAndConsultants" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_StockIssuableForSalesIncentiveAgreement" name="StockIssuableForSalesIncentiveAgreement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_StockIssuableForSalesIncentiveFeePerEach5MillionRevenue" name="StockIssuableForSalesIncentiveFeePerEach5MillionRevenue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_StockIssuedDuringPeriodSharesCommitmentFees" name="StockIssuedDuringPeriodSharesCommitmentFees" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_StockIssuedDuringPeriodSharesConversionOfWarrant" name="StockIssuedDuringPeriodSharesConversionOfWarrant" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_StockIssuedDuringPeriodSharesIssuedForDueDiligenceFee" name="StockIssuedDuringPeriodSharesIssuedForDueDiligenceFee" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_StockIssuedDuringPeriodSharesWarrantsExercises" name="StockIssuedDuringPeriodSharesWarrantsExercises" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_StockIssuedDuringPeriodValueConversionOfWarrant" name="StockIssuedDuringPeriodValueConversionOfWarrant" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_StockIssuedDuringPeriodValueIssuedForDueDiligenceFee" name="StockIssuedDuringPeriodValueIssuedForDueDiligenceFee" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_StockReturnedDuringThePeriodSharesCommitmentFee" name="StockReturnedDuringThePeriodSharesCommitmentFee" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_TechnologyTransferInstituteMember" name="TechnologyTransferInstituteMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_TermOfWarrant" name="TermOfWarrant" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_The2015SoftwareLicenseMember" name="The2015SoftwareLicenseMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_TheAmendedAndOriginalNotesMember" name="TheAmendedAndOriginalNotesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_TheNoteMember" name="TheNoteMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_TwoCustomersMember" name="TwoCustomersMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_WarrantsIssuableForEach1MillionRevenueInExcessOf20MilllionMember" name="WarrantsIssuableForEach1MillionRevenueInExcessOf20MilllionMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_WarrantsIssuableForSalesIncentiveAgreementMember" name="WarrantsIssuableForSalesIncentiveAgreementMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_WarrantsIssuedForConsultingFeesMember" name="WarrantsIssuedForConsultingFeesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_WarrantsIssuedInConnectionWithConvertibleNotesMember" name="WarrantsIssuedInConnectionWithConvertibleNotesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_WarrantsIssuedWithConvertibleNotes" name="WarrantsIssuedWithConvertibleNotes" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-14-convertible-notes-payable-convertible-notes-payable-details" name="statement-statement-note-14-convertible-notes-payable-convertible-notes-payable-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-14-convertible-notes-payable-tables" name="statement-statement-note-14-convertible-notes-payable-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-15-leases-operating-lease-balance-sheet-information-details" name="statement-statement-note-15-leases-operating-lease-balance-sheet-information-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-15-leases-operating-lease-liability-maturity-details" name="statement-statement-note-15-leases-operating-lease-liability-maturity-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-15-leases-supplemental-cash-flow-information-related-to-leases-details" name="statement-statement-note-15-leases-supplemental-cash-flow-information-related-to-leases-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-15-leases-tables" name="statement-statement-note-15-leases-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-16-earnings-loss-per-share-common-stock-eps-securities-excluded-from-the-diluted-per-share-calculation-details" name="statement-statement-note-16-earnings-loss-per-share-common-stock-eps-securities-excluded-from-the-diluted-per-share-calculation-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-16-earnings-loss-per-share-common-stock-eps-tables" name="statement-statement-note-16-earnings-loss-per-share-common-stock-eps-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-3-revenue-from-contracts-with-customers-disaggregation-of-revenue-details" name="statement-statement-note-3-revenue-from-contracts-with-customers-disaggregation-of-revenue-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-3-revenue-from-contracts-with-customers-tables" name="statement-statement-note-3-revenue-from-contracts-with-customers-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-4-pistolstar-inc-acquisition-assets-acquired-and-liabilities-assumed-details" name="statement-statement-note-4-pistolstar-inc-acquisition-assets-acquired-and-liabilities-assumed-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-4-pistolstar-inc-acquisition-assets-acquired-and-liabilities-assumed-details-parentheticals" name="statement-statement-note-4-pistolstar-inc-acquisition-assets-acquired-and-liabilities-assumed-details-parentheticals" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-4-pistolstar-inc-acquisition-finitelived-intangible-assets-acquired-details" name="statement-statement-note-4-pistolstar-inc-acquisition-finitelived-intangible-assets-acquired-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-4-pistolstar-inc-acquisition-tables" name="statement-statement-note-4-pistolstar-inc-acquisition-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-5-accounts-receivable-summary-of-accounts-receivable-details" name="statement-statement-note-5-accounts-receivable-summary-of-accounts-receivable-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-5-accounts-receivable-tables" name="statement-statement-note-5-accounts-receivable-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-6-share-based-compensation-expenses-for-continuing-operations-details" name="statement-statement-note-6-share-based-compensation-expenses-for-continuing-operations-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-6-share-based-compensation-tables" name="statement-statement-note-6-share-based-compensation-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-7-factoring-due-from-factor-details" name="statement-statement-note-7-factoring-due-from-factor-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-7-factoring-fees-details" name="statement-statement-note-7-factoring-fees-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-7-factoring-tables" name="statement-statement-note-7-factoring-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-9-inventory-components-of-inventory-details" name="statement-statement-note-9-inventory-components-of-inventory-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-9-inventory-tables" name="statement-statement-note-9-inventory-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-significant-accounting-policies-policies" name="statement-statement-significant-accounting-policies-policies" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
</xsd:schema>
