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Note B - Factoring (Details) - Due from Factor (USD $) | Dec. 31, 2014 | Dec. 31, 2013
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Due from Factor [Abstract] |  |
Original invoice value | $ 306,625 bkyi_FactoredAccountsReceivableOriginalInvoiceValue | $ 9,795 bkyi_FactoredAccountsReceivableOriginalInvoiceValue
Factored amount | 229,968 bkyi_FactoredAccountsReceivableFactoredAmount | 7,346 bkyi_FactoredAccountsReceivableFactoredAmount
Factored balance due | $ 76,657 us-gaap_AccountsAndOtherReceivablesNetCurrent | $ 2,449 us-gaap_AccountsAndOtherReceivablesNetCurrent

X
- Details
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Namespace Prefix: | bkyi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition No authoritative reference available. + References No definition available. + Details
Name: | bkyi_FactoredAccountsReceivableFactoredAmount
Namespace Prefix: | bkyi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition No authoritative reference available. + References No definition available. + Details
Name: | bkyi_FactoredAccountsReceivableOriginalInvoiceValue
Namespace Prefix: | bkyi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount due from customers, clients, or other third-parties, or arising from transactions not separately disclosed, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), net of allowances established for the purpose of reducing such receivables to an amount that approximates their net realizable value. + References No definition available. + Details
Name: | us-gaap_AccountsAndOtherReceivablesNetCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant