3.21.2 html 260 360 1 true 58 0 false 8 false false R1.htm 000 - Document - Document And Entity Information Sheet http://bio-key.com/20210630/role/statement-document-and-entity-information Document And Entity Information Cover 1 false false R2.htm 001 - Statement - Condensed Consolidated Balance Sheets (Current Period Unaudited) Sheet http://bio-key.com/20210630/role/statement-condensed-consolidated-balance-sheets-current-period-unaudited Condensed Consolidated Balance Sheets (Current Period Unaudited) Statements 2 false false R3.htm 002 - Statement - Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) Sheet http://bio-key.com/20210630/role/statement-condensed-consolidated-balance-sheets-current-period-unaudited-parentheticals Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) Statements 3 false false R4.htm 003 - Statement - Condensed Consolidated Statements of Operations (Unaudited) Sheet http://bio-key.com/20210630/role/statement-condensed-consolidated-statements-of-operations-unaudited Condensed Consolidated Statements of Operations (Unaudited) Statements 4 false false R5.htm 004 - Statement - Condensed Consolidated Statements of Stockholders' Equity (Unaudited) Sheet http://bio-key.com/20210630/role/statement-condensed-consolidated-statements-of-stockholders-equity-unaudited Condensed Consolidated Statements of Stockholders' Equity (Unaudited) Statements 5 false false R6.htm 005 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited) Sheet http://bio-key.com/20210630/role/statement-condensed-consolidated-statements-of-cash-flows-unaudited Condensed Consolidated Statements of Cash Flows (Unaudited) Statements 6 false false R7.htm 006 - Disclosure - Note 1 - Nature of Business and Basis of Presentation Sheet http://bio-key.com/20210630/role/statement-note-1-nature-of-business-and-basis-of-presentation Note 1 - Nature of Business and Basis of Presentation Notes 7 false false R8.htm 007 - Disclosure - Note 2 - Going Concern Sheet http://bio-key.com/20210630/role/statement-note-2-going-concern Note 2 - Going Concern Notes 8 false false R9.htm 008 - Disclosure - Note 3 - Revenue From Contracts With Customers Sheet http://bio-key.com/20210630/role/statement-note-3-revenue-from-contracts-with-customers Note 3 - Revenue From Contracts With Customers Notes 9 false false R10.htm 009 - Disclosure - Note 4 - PistolStar, Inc. Acquisition Sheet http://bio-key.com/20210630/role/statement-note-4-pistolstar-inc-acquisition- Note 4 - PistolStar, Inc. Acquisition Notes 10 false false R11.htm 010 - Disclosure - Note 5 - Accounts Receivable Sheet http://bio-key.com/20210630/role/statement-note-5-accounts-receivable Note 5 - Accounts Receivable Notes 11 false false R12.htm 011 - Disclosure - Note 6 - Share Based Compensation Sheet http://bio-key.com/20210630/role/statement-note-6-share-based-compensation Note 6 - Share Based Compensation Notes 12 false false R13.htm 012 - Disclosure - Note 7 - Factoring Sheet http://bio-key.com/20210630/role/statement-note-7-factoring Note 7 - Factoring Notes 13 false false R14.htm 013 - Disclosure - Note 8 - Note Receivable Sheet http://bio-key.com/20210630/role/statement-note-8-note-receivable Note 8 - Note Receivable Notes 14 false false R15.htm 014 - Disclosure - Note 9 - Prepaid Expenses and Other Sheet http://bio-key.com/20210630/role/statement-note-9-prepaid-expenses-and-other- Note 9 - Prepaid Expenses and Other Notes 15 false false R16.htm 015 - Disclosure - Note 10 - Inventory Sheet http://bio-key.com/20210630/role/statement-note-10-inventory- Note 10 - Inventory Notes 16 false false R17.htm 016 - Disclosure - Note 11 - Resalable Software License Rights Sheet http://bio-key.com/20210630/role/statement-note-11-resalable-software-license-rights Note 11 - Resalable Software License Rights Notes 17 false false R18.htm 017 - Disclosure - Note 12 - Investment in Debt Security Sheet http://bio-key.com/20210630/role/statement-note-12-investment-in-debt-security- Note 12 - Investment in Debt Security Notes 18 false false R19.htm 018 - Disclosure - Note 13 - Commitment Sheet http://bio-key.com/20210630/role/statement-note-13-commitment Note 13 - Commitment Notes 19 false false R20.htm 019 - Disclosure - Note 14 - Convertible Notes Payable Notes http://bio-key.com/20210630/role/statement-note-14-convertible-notes-payable Note 14 - Convertible Notes Payable Notes 20 false false R21.htm 020 - Disclosure - Note 15 - Leases Sheet http://bio-key.com/20210630/role/statement-note-15-leases Note 15 - Leases Notes 21 false false R22.htm 021 - Disclosure - Note 16 - Earnings Per Share ("EPS") - Common Stock ("EPS") Sheet http://bio-key.com/20210630/role/statement-note-16-earnings-per-share-eps-common-stock-eps Note 16 - Earnings Per Share ("EPS") - Common Stock ("EPS") Notes 22 false false R23.htm 022 - Disclosure - Note 17 - Stockholders' Equity Sheet http://bio-key.com/20210630/role/statement-note-17-stockholders-equity Note 17 - Stockholders' Equity Notes 23 false false R24.htm 023 - Disclosure - Note 18 - Fair Values of Financial Instruments Sheet http://bio-key.com/20210630/role/statement-note-18-fair-values-of-financial-instruments Note 18 - Fair Values of Financial Instruments Notes 24 false false R25.htm 024 - Disclosure - Note 19 - Major Customers and Accounts Receivable Sheet http://bio-key.com/20210630/role/statement-note-19-major-customers-and-accounts-receivable Note 19 - Major Customers and Accounts Receivable Notes 25 false false R26.htm 025 - Disclosure - Note 20 - Subsequent Events Sheet http://bio-key.com/20210630/role/statement-note-20-subsequent-events Note 20 - Subsequent Events Notes 26 false false R27.htm 026 - Disclosure - Significant Accounting Policies (Policies) Sheet http://bio-key.com/20210630/role/statement-significant-accounting-policies-policies Significant Accounting Policies (Policies) Policies 27 false false R28.htm 027 - Disclosure - Note 3 - Revenue From Contracts With Customers (Tables) Sheet http://bio-key.com/20210630/role/statement-note-3-revenue-from-contracts-with-customers-tables Note 3 - Revenue From Contracts With Customers (Tables) Tables http://bio-key.com/20210630/role/statement-note-3-revenue-from-contracts-with-customers 28 false false R29.htm 028 - Disclosure - Note 5 - Accounts Receivable (Tables) Sheet http://bio-key.com/20210630/role/statement-note-5-accounts-receivable-tables Note 5 - Accounts Receivable (Tables) Tables http://bio-key.com/20210630/role/statement-note-5-accounts-receivable 29 false false R30.htm 029 - Disclosure - Note 6 - Share Based Compensation (Tables) Sheet http://bio-key.com/20210630/role/statement-note-6-share-based-compensation-tables Note 6 - Share Based Compensation (Tables) Tables http://bio-key.com/20210630/role/statement-note-6-share-based-compensation 30 false false R31.htm 030 - Disclosure - Note 7 - Factoring (Tables) Sheet http://bio-key.com/20210630/role/statement-note-7-factoring-tables Note 7 - Factoring (Tables) Tables http://bio-key.com/20210630/role/statement-note-7-factoring 31 false false R32.htm 031 - Disclosure - Note 9 - Prepaid Expenses and Other (Tables) Sheet http://bio-key.com/20210630/role/statement-note-9-prepaid-expenses-and-other-tables Note 9 - Prepaid Expenses and Other (Tables) Tables http://bio-key.com/20210630/role/statement-note-9-prepaid-expenses-and-other- 32 false false R33.htm 032 - Disclosure - Note 10 - Inventory (Tables) Sheet http://bio-key.com/20210630/role/statement-note-10-inventory-tables Note 10 - Inventory (Tables) Tables http://bio-key.com/20210630/role/statement-note-10-inventory- 33 false false R34.htm 033 - Disclosure - Note 15 - Leases (Tables) Sheet http://bio-key.com/20210630/role/statement-note-15-leases-tables Note 15 - Leases (Tables) Tables http://bio-key.com/20210630/role/statement-note-15-leases 34 false false R35.htm 034 - Disclosure - Note 16 - Earnings Per Share ("EPS") - Common Stock ("EPS") (Tables) Sheet http://bio-key.com/20210630/role/statement-note-16-earnings-per-share-eps-common-stock-eps-tables Note 16 - Earnings Per Share ("EPS") - Common Stock ("EPS") (Tables) Tables http://bio-key.com/20210630/role/statement-note-16-earnings-per-share-eps-common-stock-eps 35 false false R36.htm 035 - Disclosure - Note 1 - Nature of Business and Basis of Presentation (Details Textual) Sheet http://bio-key.com/20210630/role/statement-note-1-nature-of-business-and-basis-of-presentation-details-textual Note 1 - Nature of Business and Basis of Presentation (Details Textual) Details http://bio-key.com/20210630/role/statement-note-1-nature-of-business-and-basis-of-presentation 36 false false R37.htm 036 - Disclosure - Note 2 - Going Concern (Details Textual) Sheet http://bio-key.com/20210630/role/statement-note-2-going-concern-details-textual Note 2 - Going Concern (Details Textual) Details http://bio-key.com/20210630/role/statement-note-2-going-concern 37 false false R38.htm 037 - Disclosure - Note 3 - Revenue From Contracts With Customers (Details Textual) Sheet http://bio-key.com/20210630/role/statement-note-3-revenue-from-contracts-with-customers-details-textual Note 3 - Revenue From Contracts With Customers (Details Textual) Details http://bio-key.com/20210630/role/statement-note-3-revenue-from-contracts-with-customers-tables 38 false false R39.htm 038 - Disclosure - Note 3 - Revenue From Contracts With Customers - Disaggregation of Revenue (Details) Sheet http://bio-key.com/20210630/role/statement-note-3-revenue-from-contracts-with-customers-disaggregation-of-revenue-details Note 3 - Revenue From Contracts With Customers - Disaggregation of Revenue (Details) Details 39 false false R40.htm 039 - Disclosure - Note 4 - PistolStar, Inc. Acquisition (Details Textual) Sheet http://bio-key.com/20210630/role/statement-note-4-pistolstar-inc-acquisition-details-textual Note 4 - PistolStar, Inc. Acquisition (Details Textual) Details http://bio-key.com/20210630/role/statement-note-4-pistolstar-inc-acquisition- 40 false false R41.htm 040 - Disclosure - Note 5 - Accounts Receivable - Summary of Accounts Receivable (Details) Sheet http://bio-key.com/20210630/role/statement-note-5-accounts-receivable-summary-of-accounts-receivable-details Note 5 - Accounts Receivable - Summary of Accounts Receivable (Details) Details 41 false false R42.htm 041 - Disclosure - Note 6 - Share Based Compensation - Expenses for Continuing Operations (Details) Sheet http://bio-key.com/20210630/role/statement-note-6-share-based-compensation-expenses-for-continuing-operations-details Note 6 - Share Based Compensation - Expenses for Continuing Operations (Details) Details 42 false false R43.htm 042 - Disclosure - Note 7 - Factoring (Details Textual) Sheet http://bio-key.com/20210630/role/statement-note-7-factoring-details-textual Note 7 - Factoring (Details Textual) Details http://bio-key.com/20210630/role/statement-note-7-factoring-tables 43 false false R44.htm 043 - Disclosure - Note 7 - Factoring - Due From Factor (Details) Sheet http://bio-key.com/20210630/role/statement-note-7-factoring-due-from-factor-details Note 7 - Factoring - Due From Factor (Details) Details 44 false false R45.htm 044 - Disclosure - Note 7 - Factoring - Fees (Details) Sheet http://bio-key.com/20210630/role/statement-note-7-factoring-fees-details Note 7 - Factoring - Fees (Details) Details 45 false false R46.htm 045 - Disclosure - Note 8 - Note Receivable (Details Textual) Sheet http://bio-key.com/20210630/role/statement-note-8-note-receivable-details-textual Note 8 - Note Receivable (Details Textual) Details http://bio-key.com/20210630/role/statement-note-8-note-receivable 46 false false R47.htm 046 - Disclosure - Note 9 - Prepaid Expenses and Other (Details Textual) Sheet http://bio-key.com/20210630/role/statement-note-9-prepaid-expenses-and-other-details-textual Note 9 - Prepaid Expenses and Other (Details Textual) Details http://bio-key.com/20210630/role/statement-note-9-prepaid-expenses-and-other-tables 47 false false R48.htm 047 - Disclosure - Note 9 - Prepaid Expenses and Other - Prepaid Expenses (Details) Sheet http://bio-key.com/20210630/role/statement-note-9-prepaid-expenses-and-other-prepaid-expenses-details Note 9 - Prepaid Expenses and Other - Prepaid Expenses (Details) Details 48 false false R49.htm 048 - Disclosure - Note 10 - Inventory - Components of Inventory (Details) Sheet http://bio-key.com/20210630/role/statement-note-10-inventory-components-of-inventory-details Note 10 - Inventory - Components of Inventory (Details) Details 49 false false R50.htm 049 - Disclosure - Note 11 - Resalable Software License Rights (Details Textual) Sheet http://bio-key.com/20210630/role/statement-note-11-resalable-software-license-rights-details-textual Note 11 - Resalable Software License Rights (Details Textual) Details http://bio-key.com/20210630/role/statement-note-11-resalable-software-license-rights 50 false false R51.htm 050 - Disclosure - Note 12 - Investment in Debt Security (Details Textual) Sheet http://bio-key.com/20210630/role/statement-note-12-investment-in-debt-security-details-textual Note 12 - Investment in Debt Security (Details Textual) Details http://bio-key.com/20210630/role/statement-note-12-investment-in-debt-security- 51 false false R52.htm 051 - Disclosure - Note 13 - Commitment (Details Textual) Sheet http://bio-key.com/20210630/role/statement-note-13-commitment-details-textual Note 13 - Commitment (Details Textual) Details http://bio-key.com/20210630/role/statement-note-13-commitment 52 false false R53.htm 052 - Disclosure - Note 14 - Convertible Notes Payable (Details Textual) Notes http://bio-key.com/20210630/role/statement-note-14-convertible-notes-payable-details-textual Note 14 - Convertible Notes Payable (Details Textual) Details http://bio-key.com/20210630/role/statement-note-14-convertible-notes-payable 53 false false R54.htm 053 - Disclosure - Note 15 - Leases - Operating Lease Balance Sheet Information (Details) Sheet http://bio-key.com/20210630/role/statement-note-15-leases-operating-lease-balance-sheet-information-details Note 15 - Leases - Operating Lease Balance Sheet Information (Details) Details 54 false false R55.htm 054 - Disclosure - Note 15 - Leases - Supplemental Cash Flow Information Related to Leases (Details) Sheet http://bio-key.com/20210630/role/statement-note-15-leases-supplemental-cash-flow-information-related-to-leases-details Note 15 - Leases - Supplemental Cash Flow Information Related to Leases (Details) Details 55 false false R56.htm 055 - Disclosure - Note 15 - Leases - Operating Lease Liability Maturity (Details) Sheet http://bio-key.com/20210630/role/statement-note-15-leases-operating-lease-liability-maturity-details Note 15 - Leases - Operating Lease Liability Maturity (Details) Details 56 false false R57.htm 056 - Disclosure - Note 16 - Earnings Per Share ("EPS") - Common Stock ("EPS") - Reconciliation of Numerator of Basic and Diluted EPS Calculations (Details) Sheet http://bio-key.com/20210630/role/statement-note-16-earnings-per-share-eps-common-stock-eps-reconciliation-of-numerator-of-basic-and-diluted-eps-calculations-details Note 16 - Earnings Per Share ("EPS") - Common Stock ("EPS") - Reconciliation of Numerator of Basic and Diluted EPS Calculations (Details) Details http://bio-key.com/20210630/role/statement-note-16-earnings-per-share-eps-common-stock-eps-tables 57 false false R58.htm 057 - Disclosure - Note 16 - Earnings Per Share ("EPS") - Common Stock ("EPS") - Securities Excluded from the Diluted Per Share Calculation (Details) Sheet http://bio-key.com/20210630/role/statement-note-16-earnings-per-share-eps-common-stock-eps-securities-excluded-from-the-diluted-per-share-calculation-details Note 16 - Earnings Per Share ("EPS") - Common Stock ("EPS") - Securities Excluded from the Diluted Per Share Calculation (Details) Details http://bio-key.com/20210630/role/statement-note-16-earnings-per-share-eps-common-stock-eps-tables 58 false false R59.htm 058 - Disclosure - Note 17 - Stockholders' Equity (Details Textual) Sheet http://bio-key.com/20210630/role/statement-note-17-stockholders-equity-details-textual Note 17 - Stockholders' Equity (Details Textual) Details http://bio-key.com/20210630/role/statement-note-17-stockholders-equity 59 false false R60.htm 059 - Disclosure - Note 19 - Major Customers and Accounts Receivable (Details Textual) Sheet http://bio-key.com/20210630/role/statement-note-19-major-customers-and-accounts-receivable-details-textual Note 19 - Major Customers and Accounts Receivable (Details Textual) Details http://bio-key.com/20210630/role/statement-note-19-major-customers-and-accounts-receivable 60 false false R61.htm 060 - Disclosure - Note 20 - Subsequent Events (Details Textual) Sheet http://bio-key.com/20210630/role/statement-note-20-subsequent-events-details-textual Note 20 - Subsequent Events (Details Textual) Details http://bio-key.com/20210630/role/statement-note-20-subsequent-events 61 false false All Reports Book All Reports bkyi20210630_10q.htm bkyi-20210630.xsd bkyi-20210630_cal.xml bkyi-20210630_def.xml bkyi-20210630_lab.xml bkyi-20210630_pre.xml ex_273839.htm ex_273840.htm ex_273841.htm ex_273842.htm http://xbrl.sec.gov/dei/2021 http://fasb.org/us-gaap/2021-01-31 http://fasb.org/srt/2021-01-31 true true