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Note 6 - Factoring - Fees (Details) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Factoring fees | $ 39,543 | $ 12,691 | $ 92,340 | $ 104,214

X
- Definition The cost of factoring related to accounts receivable. + References No definition available. + Details
Name: | bkyi_FactoringFees
Namespace Prefix: | bkyi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration