XML 14 R1.htm IDEA: XBRL DOCUMENT v3.22.1
Document And Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2021
Mar. 29, 2022
Jun. 30, 2021
Document Information [Line Items]      
Entity Central Index Key 0001019034    
Entity Registrant Name BIO KEY INTERNATIONAL INC    
Amendment Flag false    
Current Fiscal Year End Date --12-31    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2021    
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2021    
Document Transition Report false    
Entity File Number 1-13463    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 41-1741861    
Entity Address, Address Line One 3349 HIGHWAY 138, BUILDING A, SUITE E    
Entity Address, City or Town WALL    
Entity Address, State or Province NJ    
Entity Address, Postal Zip Code 07719    
City Area Code 732    
Local Phone Number 359-1100    
Title of 12(b) Security Common Stock, $0.0001 par value per share    
Trading Symbol BKYI    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag false    
Entity Shell Company false    
Entity Public Float     $ 27,600,000
Entity Common Stock, Shares Outstanding   8,405,209  
Auditor Name Rotenberg Meril Solomon Bertiger & Guttilla, P.C.    
Auditor Location Saddle Brook, NJ    
Auditor Firm ID 361