XML 45 R31.htm IDEA: XBRL DOCUMENT
v3.26.1

Note A - The Company and Summary of Significant Accounting Policies (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2025
Notes Tables |
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] |
|  | December 31, |
|  | 2025 |  |  | 2024 |
Accounts receivable |  | $ | 1,604,075 |  |  | $ | 1,351,482 |
Allowance for Credit Losses |  |  | (383,253 | ) |  |  | (633,253 | )
Accounts receivable, net of allowances for Credit Losses |  | $ | 1,220,822 |  |  | $ | 718,229 |
|  | Balance at Beginning of Year |  |  | Charged to Costs and Expenses |  |  | Deductions from Reserves |  |  | Balance at End of Year |
Year ended December 31, 2025 Allowance for Credit Losses |  | $ | 633,253 |  |  | $ | - |  |  | $ | (250,000 | ) |  | $ | 383,253 |
Year ended December 31, 2024 Allowance for Credit Losses |  | $ | 1,005,785 |  |  | $ | 16,265 |  |  | $ | (388,797 | ) |  | $ | 633,253 |
Useful Lives of Property Plan and Equipment [Table Text Block] |
|  | Years |
Equipment and leasehold improvements |  |  |
Equipment |  | 3 - 5 |
Furniture and fixtures |  | 3 - 5 |
Software |  | 3 |
Leasehold improvements |  | life or lease term |
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] |
|  | Year ended |
|  | December 31, |
|  | 2025 |  |  | 2024 |
Selling, general and administrative |  | $ | 139,131 |  |  | $ | 201,100 |
Research, development and engineering |  |  | 27,444 |  |  |  | 42,150 |
|  | $ | 166,575 |  |  | $ | 243,250 |

X
- Definition Tabular disclosure of the periods of time over which an entity anticipates to receive utility from its property, plant and equipment (that is, the periods of time over which an entity allocates the initial cost of its property, plant and equipment). + References No definition available. + Details
Name: | bkyi_UsefulLivesOfPropertyPlanAndEquipmentTableTextBlock
Namespace Prefix: | bkyi_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-3 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481990/310-10-45-2 + Details
Name: | us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_TableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration