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Note 7 - Factoring - Due From Factor (Details) - USD ($) | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Original invoice value | $ 108,400 | $ 99,000
Factored amount | (56,550) | (49,500)
Balance due from factor | $ 51,850 | $ 49,500

X
- Definition Factored accounts receivable factored amount. + References No definition available. + Details
Name: | bkyi_FactoredAccountsReceivableFactoredAmount
Namespace Prefix: | bkyi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Factored accounts receivable original invoice value. + References No definition available. + Details
Name: | bkyi_FactoredAccountsReceivableOriginalInvoiceValue
Namespace Prefix: | bkyi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, after allowance, receivable from customers, clients, or other third-parties, and receivables classified as other due within one year or the normal operating cycle, if longer. + References No definition available. + Details
Name: | us-gaap_AccountsAndOtherReceivablesNetCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant