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Note L - Equity (Details) - Summary of Warrant Activity (USD $) | 0 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 01, 2013 | Dec. 31, 2014 | Dec. 31, 2013
Summary of Warrant Activity [Abstract] |  |  |
Total warrants | 4,125,000 us-gaap_ClassOfWarrantOrRightOutstanding | 19,334,579 us-gaap_ClassOfWarrantOrRightOutstanding | 4,125,000 us-gaap_ClassOfWarrantOrRightOutstanding
Weighted average exercise price | $ 0.60 bkyi_WarrantsOutstandingExercisePrice | $ 0.52 bkyi_WarrantsOutstandingExercisePrice | $ 0.60 bkyi_WarrantsOutstandingExercisePrice
Weighted average remaining life | 2 years 354 days |  | 2 years 288 days
Total warrants, granted |  | 11,962,501 bkyi_ClassOfWarrantOrRightGrantsInPeriod | 15,209,579 bkyi_ClassOfWarrantOrRightGrantsInPeriod
Weighted average exercise price, granted |  | $ 0.30 bkyi_WeightedAverageExercisePriceWarrantsGranted | $ 0.50 bkyi_WeightedAverageExercisePriceWarrantsGranted
Total warrants, exercised |  | (150,000)bkyi_TotalWarrantsExercised |
Weighted average exercise price, exercised |  | $ 0.20 bkyi_WeightedAverageExercisePriceWarrantsExercised |
Total warrants, forfeited |  | (7,974,999)bkyi_TotalWarrantsForfeited |
Weighted average exercise price, forfeited |  | $ 0.50 bkyi_WeightedAverageExercisePriceWarrantsForfeited |
Total warrants, expired |  | (125,000)bkyi_TotalWarrantsExpired |
Weighted average exercise price, expired |  | $ 0.60 bkyi_WeightedAverageExercisePriceWarrantsExpired |
Repurchased |  | (4,000,000)bkyi_WarrantsRepurchased |
Repurchased |  | $ 0.60 bkyi_WeightedAverageExercisePriceWarrantsRepurchased |
Vested or expected to vest at December 31, 2014 |  | 19,047,081 bkyi_WarrantsVestedOrExpectedToVest |
Vested or expected to vest at December 31, 2014 |  | $ 0.37 bkyi_WarrantsVestedOrExpectedToVestWeightedAverageExercisePrice |
Vested or expected to vest at December 31, 2014 |  | 3 years 332 days |
Exercisable at December 31, 2014 |  | 13,065,816 bkyi_WarrantsExercisable |
Exercisable at December 31, 2014 |  | $ 0.41 bkyi_WarrantsExercisableWeightedAverageExercisePrice |
Exercisable at December 31, 2014 |  | 3 years 171 days |
Total warrants |  |  | 19,334,579 us-gaap_ClassOfWarrantOrRightOutstanding
Weighted average exercise price |  |  | $ 0.52 bkyi_WarrantsOutstandingExercisePrice
Weighted average remaining life | 2 years 354 days |  | 2 years 288 days

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- Details
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- Definition Number of warrants or rights outstanding. + 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.(i)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph i -Article 4 + Details
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