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v3.24.1.1.u2

Note V - Subsequent Events (Details Textual) - USD ($) | May 06, 2024 | Mar. 31, 2024 | Mar. 27, 2024 | Feb. 15, 2024 | Jan. 12, 2024 | Jan. 05, 2024 | Jan. 04, 2024
--- | --- | --- | --- | --- | --- | --- | ---
Restricted Stock [Member] | Share-Based Payment Arrangement, Employee [Member] | Forecast [Member] |  |  |  |  |  |  |
Shares Issued, Shares, Share-Based Payment Arrangement, Forfeited (in shares) | 186 |  |  |  |  |  |
Subsequent Event [Member] |  |  |  |  |  |  |
Stock Issued During Period, Shares, Exercise of Warrants |  |  |  |  | $ 158,000 | $ 142,000 | $ 347,000
Subsequent Event [Member] | Common Stock [Member] | Stock Issued in Lieu of Board Fees [Member] | Director [Member] |  |  |  |  |  |  |
Shares Issued, Shares, Share-Based Payment Arrangement, before Forfeiture (in shares) |  |  | 4,287 |  |  |  |
Subsequent Event [Member] | Restricted Stock [Member] | Share-Based Payment Arrangement, Employee [Member] |  |  |  |  |  |  |
Shares Issued, Shares, Share-Based Payment Arrangement, Forfeited (in shares) |  | 73 |  | 243 |  |  |

X
- Definition Number of new stock issued during the period for the exercise of warrants. + References No definition available. + Details
Name: | bkyi_StockIssuedDuringPeriodSharesExerciseOfWarrants
Namespace Prefix: | bkyi_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares (or other type of equity) forfeited during the period. + References No definition available. + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationForfeited
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number, before forfeiture, of shares issued under share-based payment arrangement. Excludes employee stock ownership plan (ESOP). + References No definition available. + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_RestrictedStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_GranteeStatusAxis=us-gaap_ShareBasedPaymentArrangementEmployeeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementScenarioAxis=srt_ScenarioForecastMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=us-gaap_CommonStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsidiarySaleOfStockAxis=bkyi_StockIssuedInLieuOfBoardFeesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_TitleOfIndividualAxis=srt_DirectorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |