Document And Entity Information Statistical Measurement [Axis] Note To Financial Statement Details Textual Significant Accounting Policies Provision for income taxes Income Tax Expense (Benefit) Note 3 - Revenue From Contracts With Customers ecd_NonRule10b51ArrTrmntdFlag Non-Rule 10b5-1 Arrangement Terminated [Flag] Note 4 - Accounts Receivable ecd_NonRule10b51ArrAdoptedFlag Non-Rule 10b5-1 Arrangement Adopted [Flag] Note 5 - Share-based Compensation Trading Arrangements, by Individual [Table] Note 6 - Inventory Material Terms of Trading Arrangement [Text Block] Note 9 - Leases Note 11 - Earnings (Loss) Per Share - Common Stock ("EPS") Note 3 - Revenue From Contracts With Customers - Disaggregation of Revenue (Details) Note 4 - Accounts Receivable - Summary of Accounts Receivable (Details) Note 5 - Share-based Compensation - Expenses for Continuing Operations (Details) Minimum [Member] Note 5 - Share-based Compensation - Expenses for Continuing Operations 2 (Details) Note 6 - Inventory - Components of Inventory (Details) Statistical Measurement [Domain] Investments Note 9 - Leases - Operating Lease Balance Sheet Information (Details) Maximum [Member] us-gaap_SharePrice Share Price (in dollars per share) Note 9 - Leases - Summary of Operating Lease Maturity (Details) Note 11 - Earnings (Loss) Per Share - Common Stock ("EPS") - Securities Excluded From the Diluted Per Share Calculation (Details) Notes To Financial Statements Notes To Financial Statements [Abstract] us-gaap_IncreaseDecreaseInAccountsReceivable Accounts receivable Business Description and Accounting Policies [Text Block] us-gaap_CapitalizedContractCostAmortizationPeriod Capitalized Contract Cost, Amortization Period (Year) Counterparty Name [Axis] us-gaap_EffectiveIncomeTaxRateContinuingOperations Effective Income Tax Rate Reconciliation, Percent Counterparty Name [Domain] us-gaap_IncreaseDecreaseInInventories Inventory Exercise of warrants Amount of stock issued during the period due to warrants exercised. Exercise of warrants (in shares) Number of shares issued during the period due to warrants exercised. us-gaap_SharesOutstanding Balance (in shares) Balance (in shares) Segment Reporting [Text Block] us-gaap_IncreaseDecreaseInOtherReceivables Due from factor The 2024 Note [Member] Information pertaining to The 2024 Note. Award Type [Axis] Adjustments to reconcile net loss to net cash used for operating activities: Plan Name [Axis] us-gaap_Liabilities TOTAL LIABILITIES Plan Name [Domain] LIABILITIES us-gaap_WarrantsAndRightsOutstandingTerm Warrants and Rights Outstanding, Term (Year) Share-based compensation expense Share-Based Payment Arrangement, Expense us-gaap_LiabilitiesAndStockholdersEquity TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY Conversion of Partitioned Notes to Common Stock [Member] Related to conversion of partitioned notes to common stock. Title and Position [Axis] Segment Reporting [Table] us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets Prepaid expenses and other bkyi_ConcentrationRiskNumberOfMajorCustomers Concentration Risk, Number of Major Customers Represents the number of external customers that accounts for 10 percent or more of an entity's revenues or accounts receivable. 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Africa [Member] Change in assets and liabilities: North America [Member] us-gaap_IncreaseDecreaseInAccountsPayable Accounts payable Asia [Member] us-gaap_IncreaseDecreaseInAccruedLiabilities Accrued liabilities us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS Effect of exchange rate changes New Accounting Pronouncements, Policy [Policy Text Block] Allowance for credit losses Represents the amount of increase (decrease) in allowance for doubtful accounts during the reporting period. us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD CASH AND CASH EQUIVALENTS, END OF PERIOD Antidilutive Securities, Name [Domain] Comprehensive loss: Statement [Table] The 2025 Note [Member] Information pertaining to the 2025 Note. Cash paid for amounts included in the measurement of operating lease liabilities for the six months ended June 30, 2026 and 2025: us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability Additions for operating lease right-of-use assets Long-Term Debt, Type [Axis] Product and Service [Domain] Product and Service [Axis] us-gaap_RepaymentsOfDebt Repayments of Debt us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue Total future lease payments Exercise Price Range [Domain] Exercise Price Range [Axis] Weighted average discount rate – operating leases 2027 us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths Accrued liabilities Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered, excluding income tax payable. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). bkyi_DebtInstrumentPercentageOfProceedsRepaid Debt Instrument, Percentage of Proceeds Repaid Represent the percentage of proceeds repaid under a debt instrument. 2026 (6 months remaining) us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] 2029 us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree ASSETS 2028 us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo Statement [Line Items] Common stock, shares issued (in shares) Common stock, shares outstanding (in shares) Award Type [Domain] Common stock, shares authorized (in shares) Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Common stock — authorized, 170,000,000 shares; issued and outstanding; 1,087,360 of $.0001 par value at June 30, 2026 and 1,085,360 at December 31, 2025, respectively bkyi_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantedInPeriodFairValue Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Granted in Period, Fair Value Represents the fair value of equity instruments, other than options, at the date of issuance. Schedule of Inventory, Current [Table Text Block] us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) Stock based directors’ fees The costs and payments related to stock-based fees to directors and consultants. Accounts payable us-gaap_PolicyTextBlockAbstract Accounting Policies us-gaap_DisclosureTextBlockAbstract Notes to Financial Statements us-gaap_TableTextBlock Notes Tables bkyi_DebtInstrumentMandatoryPrepaymentPercentage Debt Instrument, Mandatory Prepayment, Percentage Represents the mandatory prepayment percentage. us-gaap_ProceedsFromIssuanceOfWarrants Proceeds from Issuance of Warrants bkyi_DebtInstrumentIncreaseDecreasePercentage Debt Instrument, Increase (Decrease), Percentage Represents the percentage of increase (decrease) in the debt instrument pursuant to the loan agreement. us-gaap_ComprehensiveIncomeNetOfTax Comprehensive loss bkyi_DebtInstrumentExitFeePercentage Debt Instrument, Exit Fee Percentage Contractual exit fee rate for funds borrowed, under the debt agreement. bkyi_DebtInstrumentRedemptionAmount Debt Instrument, Redemption Amount The principal amount of debt at which debt can be redeemed by the issuer. Concentration Risk [Table] Subsequent Events [Text Block] Partitioned Note [Member] Represents Partitioned Note. Concentration Risk Type [Axis] Concentration Risk Disclosure [Text Block] Exchange Agreement Conversions into Common Stock [Member] Represents exchange agreement conversions into common stock. bkyi_PolicyTable us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount Less: imputed interest Operating lease liabilities, net of current portion Operating lease liabilities, non-current portion Total us-gaap_OperatingLeaseLiability Total operating lease liabilities Operating lease liabilities, current portion Operating lease liabilities, current portion Senior Secured Promissory Note [Member] Represents the senior secured promissory note. Accounts Receivable [Member] Debt, current Concentration Risk Type [Domain] bkyi_DebtInstrumentReductionInOutstandingBalanceAtTheEndOfEachMonth Debt Instrument, Reduction in Outstanding Balance at The End Of Each Month The cash outflow from the repayment of the outstanding balance pursuant the agreement. us-gaap_PaymentsOfFinancingCosts Payments of Financing Costs us-gaap_LongTermDebt Long-Term Debt Loss Contingencies [Table] Statement of Stockholders' Equity [Abstract] SPAIN Lessee, Operating Lease, Costs, Assets and Liabilities [Table Text Block] The tabular disclosure of costs, assets, and liabilities subject to operating lease by lessee. Class of Warrant or Right [Axis] Class of Warrant or Right [Domain] Statement of Cash Flows [Abstract] Other comprehensive income (loss) – foreign currency translation adjustment Long-Term Debt, Type [Domain] STOCKHOLDERS’ EQUITY Equity Components [Axis] Operating lease liabilities Equity Component [Domain] us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) Warrant Inducement Agreement [Member] Represents the warrant inducement agreement. Equity [Text Block] AOCI Attributable to Parent [Member] Additional Paid-in Capital [Member] Retained Earnings [Member] us-gaap_CostOfGoodsAndServicesSold Cost of Goods and Services Sold Asset Acquisition [Domain] Foreign Currency Transactions and Translations Policy [Policy Text Block] Asset Acquisition [Axis] Reserve for inventory us-gaap_InvestmentCompanyInvestmentOwnedFairValueMeasurementInput Investment Company, Investment Owned, Measurement Input Equipment and leasehold improvements, net us-gaap_AssetAcquisitionConsiderationTransferred Asset Acquisition, Consideration Transferred Subsequent Event Type [Domain] Bad debts Subsequent Event [Table] Subsequent Event Type [Axis] Costs and other expenses us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue Share-based compensation Deferred tax liability Fair Value Disclosures [Text Block] Substantial Doubt about Going Concern [Text Block] Share-Based Payment Arrangement, Option [Member] Interest payable on note Operating leases right-of-use assets Represents the amortization expense or reversal for a right of use asset under an operating lease. Employee Stock Purchase Plan [Member] Information regarding employee stock purchase plan. us-gaap_LiabilitiesCurrent Total current liabilities EMESA [Member] Related to EMESA. us-gaap_AccountsReceivableNetCurrent Accounts receivable, net Accounts receivable, net of allowances for credit losses Customer Concentration Risk [Member] Wavedrone Platform from Shore House IVF [Member] Relating to Wavedrone platform from Shore House IVF. Revenue Benchmark [Member] Long-Term Debt [Text Block] Share-based compensation for employee stock plan Accumulated other comprehensive income us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest Loss before provision for income tax Existing Warrants [Member] Represents the existing warrants. Additional paid-in capital Debt Conversion, Name [Domain] Debt Conversion Description [Axis] Three Customers [Member] Information pertaining to three customers. Prepaid expenses and other us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1 Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) Issuance of common stock for Employee Stock Purchase Plan us-gaap_PaymentsToAcquirePropertyPlantAndEquipment Capital expenditures Lessee, Operating Leases [Text Block] Issuance of common stock for directors’ fees Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture us-gaap_DebtInstrumentCarryingAmount Long-Term Debt, Gross us-gaap_DebtInstrumentFaceAmount Debt Instrument, Face Amount Amortization of note payable us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures Restricted stock forfeited us-gaap_AssetsCurrent Total current assets Issuance of restricted stock to employees Issuance of common stock for directors’ fees (in shares) Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture (in shares) Issuance of common stock for Employee Stock Purchase Plan (in shares) Stock Issued During Period, Shares, Employee Stock Purchase Plans (in shares) us-gaap_DebtInstrumentIncreaseDecreaseForPeriodNet Debt Instrument, Increase (Decrease), Net us-gaap_GrossProfit Gross profit us-gaap_StockIssuedDuringPeriodSharesNewIssues Stock Issued During Period, Shares, New Issues (in shares) Accounts receivable Debt Instrument, Name [Domain] us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period (in shares) Fair Value Measurement Inputs and Valuation Techniques [Table] us-gaap_DebtInstrumentInterestRateStatedPercentage Debt Instrument, Interest Rate, Stated Percentage us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited Stock Issued During Period, Shares, Restricted Stock Award, Forfeited (in shares) Restricted stock forfeited (in shares) Issuance of restricted stock to employees (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures (in shares) us-gaap_Depreciation Depreciation us-gaap_DebtInstrumentUnamortizedDiscount Debt Instrument, Unamortized Discount Schedule of Long-Term Debt Instruments [Table] Debt Instrument [Axis] CASH FLOW FROM OPERATING ACTIVITIES: Fabricated assemblies CASH FLOWS FROM INVESTING ACTIVITIES: us-gaap_NetCashProvidedByUsedInOperatingActivities Net cash used in operating activities CASH FLOW FROM FINANCING ACTIVITIES: us-gaap_NetCashProvidedByUsedInInvestingActivities Net cash provided by (used in) investing activities us-gaap_SharesIssuedPricePerShare Shares Issued, Price Per Share (in dollars per share) us-gaap_PaymentsOfDebtIssuanceCosts Offering costs us-gaap_NetCashProvidedByUsedInFinancingActivities Net cash provided by (used in) financing activities Finished goods Stockholders' Equity, Policy [Policy Text Block] Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Accounting Policies [Abstract] Measurement Input, Impairment of Investments [Member] Represents information pertaining to the measurement input for impairment of investments. us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent Allowance for credit losses us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent Share-Based Compensation Arrangement by Share-Based Payment Award, Purchase Price of Common Stock, Percent Measurement Input Type [Axis] Income Statement [Abstract] us-gaap_NumberOfOperatingSegments Number of Operating Segments us-gaap_NumberOfReportableSegments Number of Reportable Segments Repayment of government loan Net loss Net loss Net loss Net loss us-gaap_AmortizationOfFinancingCosts Loan fee amortization Amortization of intangible assets us-gaap_AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts Issuance costs Measurement Input Type [Domain] us-gaap_DebtConversionConvertedInstrumentAmount1 Debt Conversion, Converted Instrument, Amount us-gaap_DebtConversionConvertedInstrumentSharesIssued1 Debt Conversion, Converted Instrument, Shares Issued (in shares) Income Tax Disclosure [Text Block] us-gaap_ProceedsFromStockPlans Proceeds from Stock Plans Restricted Stock [Member] Accounting Standards Update and Change in Accounting Principle [Table] Exercise Price Greater Than Average Market Price Of Common Shares [Member] Exercise price greater than average market price of common shares member. Two Customers [Member] Information pertaining to two customer. bkyi_ClassOfWarrantOrRightExercisedDuringPeriod Class of Warrant or Right, Exercised During Period (in shares) Represents the class of warrant or right, exercised during period. Other income (expense) Statement of Financial Position [Abstract] us-gaap_NonoperatingIncomeExpense Total other income (expense), net us-gaap_LiabilitiesNoncurrent Total non-current liabilities us-gaap_AssetsNoncurrent Total non-current assets Cash paid for: Share and warrant-based compensation for employees and consultants Amount of noncash expense for share-based payment arrangement, excluding directors fees. Nonmonetary Transaction Type [Domain] Nonmonetary Transaction Type [Axis] us-gaap_IncreaseDecreaseInDeferredRevenue Deferred revenue Warrant [Member] Document Type Operating expenses Document Information [Line Items] Document Quarterly Report us-gaap_ConcentrationRiskPercentage1 Concentration Risk, Percentage Weighted average remaining lease term (in years) – operating leases (Year) Document Information [Table] Antidilutive securities (in shares) Antidilutive Securities [Axis] Entity Interactive Data Current Document Transition Report us-gaap_OperatingExpenses Total operating expenses Basic and diluted (in shares) Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Antidilutive Security, Excluded EPS Calculation [Table] Basic and diluted loss per common share (in dollars per share) us-gaap_StockIssued1 Issuance of stock for repayment of debt Effective Income Tax Rate Reconciliation [Table] Title and Position [Domain] Deposits and other assets Intangible assets, net Bio-Key International [Member] Relating to Bio-Key International. Document Fiscal Period Focus Customer [Domain] Commitments Disclosure [Text Block] Document Fiscal Year Focus us-gaap_StockholdersEquityNoteStockSplitConversionRatio1 Stockholders' Equity Note, Stock Split, Conversion Ratio Investment, Name [Domain] Amendment Flag bkyi_InvestmentOwnedPercentageOfSharesOutstanding Investment Owned, Percentage of Shares Outstanding Represents the percentage of outstanding shares of investment owned. Common Stock [Member] Promissory Note 2 [Member] The second promissory note. Promissory Note 1 [Member] The first promissory note. Document Period End Date Legal Entity [Axis] Total lease cost Entity File Number Government Loan [Member] Represents information related to government loan. Entity Tax Identification Number Noncash investing and financing activities Disaggregation of Revenue [Table Text Block] bkyi_IncreaseDecreaseInCapitalizedContractCosts Capitalized contract costs The amount of increase (decrease) in capitalized contract costs. Disaggregation of Revenue [Table] Entity [Domain] Entity Central Index Key Hardware [Member] Represents information pertaining to hardware. Entity Registrant Name Entity Current Reporting Status Entity Incorporation, State or Country Code Current Fiscal Year End Date Research, development and engineering Entity Filer Category Entity Shell Company Receipt of cash from employee stock purchase plan Represents proceeds from employee stock purchase plan. Entity Emerging Growth Company Entity Small Business us-gaap_OperatingIncomeLoss Operating loss Outstanding Warrants [Member] Related to outstanding warrants. Boumarang, Inc. [Member] Related to Boumarang, Inc. us-gaap_ContractWithCustomerLiabilityRevenueRecognized Contract with Customer, Liability, Revenue Recognized Revenues Entity Address, State or Province Inventory, Current [Table] Entity Address, City or Town us-gaap_InterestExpenseNonoperating Interest expense Additional Warrants [Member] Related to additional warrants. Accumulated deficit Entity Address, Address Line One Hardware Reserve [Member] Relating to hardware reserve. City Area Code Capitalized contract costs, net Local Phone Number Entity Address, Postal Zip Code Revenue from Contract with Customer [Text Block] Title of 12(b) Security Security Exchange Name Trading Symbol Class of Stock [Axis] Amortization of capitalized contract costs Entity Common Stock, Shares Outstanding Earnings Per Share [Text Block] Director [Member] Proceeds from note payable Proceeds from Debt, Net of Issuance Costs Weighted average common shares outstanding: bkyi_BeneficialOwnershipLimitationPercentageOfCommonStockOutstanding Beneficial Ownership Limitation, Percentage of Common Stock Outstanding The maximum amount of common stock, expressed as a percentage of total common stock outstanding, an investor is allowed to own. New Warrants [Member] Represents the New Warrants. Proceeds for exercise of warrants Proceeds from Warrant Exercises Common stock, par value (in dollars per share) Investment, Name [Axis] Basis of Accounting, Policy [Policy Text Block] us-gaap_Assets TOTAL ASSETS Cash and cash equivalents Geographical [Domain] Geographical [Axis] us-gaap_CommonStockCapitalSharesReservedForFutureIssuance Common Stock, Capital Shares Reserved for Future Issuance (in shares) Investment [Text Block] Deferred revenue, long term us-gaap_ContractWithCustomerLiability Contract with Customer, Liability us-gaap_InvestmentOwnedBalanceShares Investment Owned, Balance, Shares (in shares) Customer [Axis] Deferred revenue, current Investment Holdings [Table] Accounts and Financing Receivables [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] License [Member] Interest income Interest Inventory Disclosure [Text Block] Inventory Total inventory Service [Member] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] us-gaap_StockholdersEquity TOTAL STOCKHOLDERS’ EQUITY Balance Balance Existing Investor [Member] The existing investor. The 2025 Promissory Note [Member] The 2025 Promissory Note. Stock, Class of Stock [Table] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Domain] us-gaap_InventoryValuationReserves Reserve on finished goods Operating lease right-of-use assets ecd_Rule10b51ArrTrmntdFlag Rule 10b5-1 Arrangement Terminated [Flag] ecd_Rule10b51ArrAdoptedFlag Rule 10b5-1 Arrangement Adopted [Flag] us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax Revenues Commitments and Contingencies