Condensed Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended	6 Months Ended
Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenues
Revenue from Contract with Customer, Including Assessed Tax	$ 992,090	$ 307,142	$ 2,880,728	$ 829,627
Costs and other expenses
Costs and other expenses	239,569	148,454	1,006,204	272,717
Gross profit	752,521	158,688	1,874,524	556,910
Operating Expenses
Selling, general and administrative	1,374,084	1,211,928	2,890,482	2,593,327
Research, development and engineering	490,952	318,573	932,603	655,462
Total Operating Expenses	1,865,036	1,530,501	3,823,085	3,248,789
Operating loss	(1,112,515)	(1,371,813)	(1,948,561)	(2,691,879)
Other income (expense)
Interest income	832	25,801	3,447	25,802
Government grant – Paycheck Protection Program	0	340,819	0	340,819
Loss on foreign currency transactions	(50,000)	0	(50,000)	0
Interest expense	0	(567,516)	(18,000)	(2,118,657)
Loss on extinguishment of debt	0	0	0	(499,076)
Total other income (expense), net	(49,168)	(200,896)	(64,553)	(2,251,112)
Net loss	(1,161,683)	(1,572,709)	(2,013,114)	(4,942,991)
Deemed dividends related to down-round features	0	0	0	(112,686)
Net loss available to common stockholders	$ (1,161,683)	$ (1,572,709)	$ (2,013,114)	$ (5,055,677)
Basic and diluted loss per common share (in dollars per share)	$ (0.15)	$ (0.60)	$ (0.26)	$ (2.24)
Basic and diluted (in shares)	7,776,190	2,608,108	7,774,946	2,253,867
Service [Member]
Revenues
Revenue from Contract with Customer, Including Assessed Tax	$ 286,641	$ 229,503	$ 666,663	$ 437,026
Costs and other expenses
Costs and other expenses	158,440	92,672	334,384	163,117
License [Member]
Revenues
Revenue from Contract with Customer, Including Assessed Tax	662,193	23,542	1,141,151	258,887
Costs and other expenses
Costs and other expenses	48,373	8,255	87,342	18,711
Hardware [Member]
Revenues
Revenue from Contract with Customer, Including Assessed Tax	43,256	54,097	1,072,914	133,714
Costs and other expenses
Costs and other expenses	$ 32,756	$ 47,527	$ 584,478	$ 90,889

Represents income recognized from government grant under the CARES Act.

No definition available.

Name:	bkyi_GovernmentGrantIncome
Namespace Prefix:	bkyi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 924
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 11.L)
-URI http://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.2(a),(d))
-URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227