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  <xsd:element abstract="true" id="bkyi_DocumentAndEntityInformation" name="DocumentAndEntityInformation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_EffectiveIncomeTaxReconciliationEffectOfNetOperatingLoss" name="EffectiveIncomeTaxReconciliationEffectOfNetOperatingLoss" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_EffectiveIncomeTaxReconciliationPermanentDifferences" name="EffectiveIncomeTaxReconciliationPermanentDifferences" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" 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 abstract="true" id="bkyi_ExercisePriceLessThanMarketPriceOfCommonSharesMember" name="ExercisePriceLessThanMarketPriceOfCommonSharesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_ExercisePriceRange1Member" name="ExercisePriceRange1Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_ExercisePriceRange2Member" name="ExercisePriceRange2Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_ExercisePriceRange3Member" name="ExercisePriceRange3Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_ExercisePriceRange4Member" name="ExercisePriceRange4Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_ExpectedIncreaseInOperationalCosts" name="ExpectedIncreaseInOperationalCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_ExpectedOperationalCostsPerMonth" name="ExpectedOperationalCostsPerMonth" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" 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_FactoringArrangementTerm" name="FactoringArrangementTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" 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="xbrli:stringItemType" 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_InTheMoneyOptionsMember" name="InTheMoneyOptionsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" 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_InitialConversionPrice" name="InitialConversionPrice" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="instant"/>
  <xsd:element id="bkyi_IssuanceOfCommonStockInExchangeForWarrantsExercised" name="IssuanceOfCommonStockInExchangeForWarrantsExercised" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_LifeSouthMember" name="LifeSouthMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_LiquidationValuePerShare" name="LiquidationValuePerShare" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="instant"/>
  <xsd:element abstract="true" id="bkyi_LowerRangeOfMinimumMember" name="LowerRangeOfMinimumMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_MaintenanceContractsMember" name="MaintenanceContractsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_MaximumOwnershipAsAResultOfConversion" name="MaximumOwnershipAsAResultOfConversion" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant"/>
  <xsd:element abstract="true" id="bkyi_MonthlyPaymentToMrColatostiMember" name="MonthlyPaymentToMrColatostiMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_NonPlanMember" name="NonPlanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_NonstatutoryStockMember" name="NonstatutoryStockMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" 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 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_OperationalCostsPerMonth" name="OperationalCostsPerMonth" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" 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_PeriodPrecedingTheDividendPaymentDate" name="PeriodPrecedingTheDividendPaymentDate" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_PlacementAgentWarrantsMember" name="PlacementAgentWarrantsMember" 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 id="bkyi_ReclassificationOfDerivativeLiabilityToAdditionalPaidInCapital" name="ReclassificationOfDerivativeLiabilityToAdditionalPaidInCapital" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_ReverseStockSplitMember" name="ReverseStockSplitMember" 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_SeriesA1SharesMember" name="SeriesA1SharesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_SeriesB1SharesMember" name="SeriesB1SharesMember" 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_SoftwareLicenseTotal" name="SoftwareLicenseTotal" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element id="bkyi_SotwareLicenseRightsCurrent" name="SotwareLicenseRightsCurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element id="bkyi_StockIssuedDuringPeriodSharesIssuedForDirectorsFees" name="StockIssuedDuringPeriodSharesIssuedForDirectorsFees" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_StockIssuedDuringPeriodValueIssuedForDirectorsFees" name="StockIssuedDuringPeriodValueIssuedForDirectorsFees" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_StockholdersEquityNoteStockSplitConversionRatioApprovedForFuture" name="StockholdersEquityNoteStockSplitConversionRatioApprovedForFuture" nillable="true" substitutionGroup="xbrli:item" type="xbrli:pureItemType" 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_The1999StockOptionPlanMember" name="The1999StockOptionPlanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_The2004StockOptionPlanMember" name="The2004StockOptionPlanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_The2015EquityIncentivePlanMember" name="The2015EquityIncentivePlanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_TotalWarrantsExercised" name="TotalWarrantsExercised" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_TotalWarrantsExpired" name="TotalWarrantsExpired" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_TotalWarrantsForfeited" name="TotalWarrantsForfeited" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_UpperRangeOfMinimumMember" name="UpperRangeOfMinimumMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_UsefulLivesOfPropertyPlanAndEquipmentTableTextBlock" name="UsefulLivesOfPropertyPlanAndEquipmentTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_WarrantAndDerivativeLiabilitiesMember" name="WarrantAndDerivativeLiabilitiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_WarrantExercisableOnCashlessBasisPeriodFollowingAnniveraryOfIssuanceDate" name="WarrantExercisableOnCashlessBasisPeriodFollowingAnniveraryOfIssuanceDate" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_WarrantIssuedUnderSeptember2015SpaMember" name="WarrantIssuedUnderSeptember2015SpaMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_WarrantRepurchasedDuringPeriodValue" name="WarrantRepurchasedDuringPeriodValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_WarrantsExercisable" name="WarrantsExercisable" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant"/>
  <xsd:element id="bkyi_WarrantsExercisableWeightedAverageExercisePrice" name="WarrantsExercisableWeightedAverageExercisePrice" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="instant"/>
  <xsd:element id="bkyi_WarrantsExercisableWeightedAverageRemainingLife" name="WarrantsExercisableWeightedAverageRemainingLife" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_WarrantsIssuedUnderPispaMember" name="WarrantsIssuedUnderPispaMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_WarrantsOutstandingExercisePrice" name="WarrantsOutstandingExercisePrice" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="instant"/>
  <xsd:element id="bkyi_WarrantsOutstandingWeightedAverageRemainingLife" name="WarrantsOutstandingWeightedAverageRemainingLife" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_WarrantsRepurchased" name="WarrantsRepurchased" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant"/>
  <xsd:element id="bkyi_WarrantsVestedOrExpectedToVest" name="WarrantsVestedOrExpectedToVest" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant"/>
  <xsd:element id="bkyi_WarrantsVestedOrExpectedToVestWeightedAverageExercisePrice" name="WarrantsVestedOrExpectedToVestWeightedAverageExercisePrice" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="instant"/>
  <xsd:element id="bkyi_WarrantsVestedOrExpectedToVestWeightedAverageRemainingLife" name="WarrantsVestedOrExpectedToVestWeightedAverageRemainingLife" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_WeightedAverageExercisePriceWarrantsExercised" name="WeightedAverageExercisePriceWarrantsExercised" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_WeightedAverageExercisePriceWarrantsExpired" name="WeightedAverageExercisePriceWarrantsExpired" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_WeightedAverageExercisePriceWarrantsForfeited" name="WeightedAverageExercisePriceWarrantsForfeited" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_WeightedAverageExercisePriceWarrantsGranted" name="WeightedAverageExercisePriceWarrantsGranted" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration"/>
  <xsd:element id="bkyi_WeightedAverageExercisePriceWarrantsRepurchased" name="WeightedAverageExercisePriceWarrantsRepurchased" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-a-allowance-for-doubtful-accounts-details" name="statement-statement-note-a-allowance-for-doubtful-accounts-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-a-estimated-useful-lives-for-depreciation-and-amortization-details" name="statement-statement-note-a-estimated-useful-lives-for-depreciation-and-amortization-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-a-sharebased-compensation-expenses-for-continuing-operations-details" name="statement-statement-note-a-sharebased-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-a-summary-of-accounts-receivable-details" name="statement-statement-note-a-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-a-the-company-and-summary-of-significant-accounting-policies-tables" name="statement-statement-note-a-the-company-and-summary-of-significant-accounting-policies-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-a-valuation-assumptions-for-stock-options-details" name="statement-statement-note-a-valuation-assumptions-for-stock-options-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-b-due-from-factor-details" name="statement-statement-note-b-due-from-factor-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-b-factoring-fees-details" name="statement-statement-note-b-factoring-fees-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-b-factoring-tables" name="statement-statement-note-b-factoring-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-c-fair-value-measurement-of-warrant-liabilities-and-derivative-liabilities-details" name="statement-statement-note-c-fair-value-measurement-of-warrant-liabilities-and-derivative-liabilities-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-c-fair-value-measurements-using-significant-unobservable-inputs-details" name="statement-statement-note-c-fair-value-measurements-using-significant-unobservable-inputs-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-c-fair-values-of-financial-instruments-tables" name="statement-statement-note-c-fair-values-of-financial-instruments-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-d-accounts-receivable-concentration-risk-by-major-customer-details" name="statement-statement-note-d-accounts-receivable-concentration-risk-by-major-customer-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-d-concentration-of-risk-tables" name="statement-statement-note-d-concentration-of-risk-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-d-revenue-concentration-risk-by-major-customer-details" name="statement-statement-note-d-revenue-concentration-risk-by-major-customer-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-e-components-of-inventory-details" name="statement-statement-note-e-components-of-inventory-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-e-inventory-tables" name="statement-statement-note-e-inventory-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-g-equipment-and-leashold-improvements-tables" name="statement-statement-note-g-equipment-and-leashold-improvements-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-g-summary-of-equipment-and-leasehold-improvements-details" name="statement-statement-note-g-summary-of-equipment-and-leasehold-improvements-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-h-intangible-assets-tables" name="statement-statement-note-h-intangible-assets-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-h-summary-of-intangible-assets-details" name="statement-statement-note-h-summary-of-intangible-assets-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-j-accrued-laibilites-tables" name="statement-statement-note-j-accrued-laibilites-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-j-summary-of-accrued-liabilities-details" name="statement-statement-note-j-summary-of-accrued-liabilities-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-n-commitments-and-contingencies-tables" name="statement-statement-note-n-commitments-and-contingencies-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-n-future-minimum-rental-commitments-of-noncancelable-operating-leases-details" name="statement-statement-note-n-future-minimum-rental-commitments-of-noncancelable-operating-leases-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-o-equity-tables" name="statement-statement-note-o-equity-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-o-summary-of-warrant-activity-details" name="statement-statement-note-o-summary-of-warrant-activity-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-p-option-activity-details" name="statement-statement-note-p-option-activity-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-p-options-outstanding-and-exercisable-details" name="statement-statement-note-p-options-outstanding-and-exercisable-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-p-stock-options-tables" name="statement-statement-note-p-stock-options-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-q-components-of-deferred-taxes-details" name="statement-statement-note-q-components-of-deferred-taxes-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-q-income-taxes-tables" name="statement-statement-note-q-income-taxes-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-q-reconciliation-of-the-effective-income-tax-rate-to-us-federal-statutory-income-tax-rate-details" name="statement-statement-note-q-reconciliation-of-the-effective-income-tax-rate-to-us-federal-statutory-income-tax-rate-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-s-earnings-per-share-eps-tables" name="statement-statement-note-s-earnings-per-share-eps-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-s-reconciliation-of-numerator-of-basic-and-diluted-eps-calculations-with-inclusion-of-preferred-stock-dividends-details" name="statement-statement-note-s-reconciliation-of-numerator-of-basic-and-diluted-eps-calculations-with-inclusion-of-preferred-stock-dividends-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="bkyi_statement-statement-note-s-securities-excluded-from-the-diluted-per-share-calculation-details" name="statement-statement-note-s-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-significant-accounting-policies-policies" name="statement-statement-significant-accounting-policies-policies" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
</xsd:schema>
