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Note H - Related Party (Details) (USD $) | 24 Months Ended |
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Dec. 31, 2011 | Dec. 31, 2013
Monthly Payment to Mr. Colatosti [Member] |  |
Note H - Related Party (Details) [Line Items] |  |
Related Party Transaction, Amounts of Transaction | $ 5,000 us-gaap_RelatedPartyTransactionAmountsOfTransaction / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = bkyi_MonthlyPaymentToMrColatostiMember |
Chief Financial Officer [Member] |  |
Note H - Related Party (Details) [Line Items] |  |
Accounts Payable, Related Parties |  | $ 50,000 us-gaap_AccountsPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_ChiefFinancialOfficerMember

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- Definition Amount for accounts payable to related parties. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(k)(1)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph k -Subparagraph 1 -Article 4 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.15(5)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.17) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 17 -Article 7 + Details
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