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Note 4 - Factoring Fees (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Selling, General and Administrative Expenses [Member]
Factoring fees	$ 87,929	$ 33,798	$ 323,059	$ 133,921

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

X

- Details

Name:	us-gaap_IncomeStatementLocationAxis=us-gaap_SellingGeneralAndAdministrativeExpensesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: