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Note 8 - Resalable Software License Rights - Summary of Software License Rights (Details) - USD ($) | Sep. 30, 2019 | Dec. 31, 2018
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Resalable software license rights | $ 1,125,000 | $ 1,125,000
Resalable software license rights, net of current portion | 5,906,466 | 6,790,610
Total resalable software license rights | $ 7,031,466 | $ 7,915,610

X
- Definition Represents the amount of current and noncurrent software license rights as of the balance sheet date. + References No definition available. + Details
Name: | bkyi_SoftwareLicenseRights
Namespace Prefix: | bkyi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Carrying amounts as of the balance sheet date of software license rights classified as current. + References No definition available. + Details
Name: | bkyi_SoftwareLicenseRightsCurrent
Namespace Prefix: | bkyi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Carrying amounts as of the balance sheet date of software license rights classified as non-current. + References No definition available. + Details
Name: | bkyi_SoftwareLicenseRightsNoncurrent
Namespace Prefix: | bkyi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant