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Note B - Factoring (Details) - Due from Factor (USD $) | Dec. 31, 2012 | Dec. 31, 2011
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Due from Factor [Abstract] |  |
Original Invoice Value | $ 744,315 | $ 0
Factored Amount | 554,411 | 0
Factored Balance due | $ 189,904 | $ 0

X
- Details
Name: | bkyi_DueFromFactorAbstract
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
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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
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Namespace Prefix: | bkyi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- 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
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant