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Note 8 - Resalable Software License Rights - Summary of Software License Rights (Details) - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Resalable software license rights	$ 1,125,000	$ 1,125,000
Resalable software license rights, net of current portion	6,483,406	6,790,610
Total software license rights	$ 7,608,406	$ 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