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Nature of Business (Details Narrative) - USD ($)
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Dec. 31, 2018
Dec. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]        
Number of patents, description Intellicheck continues to develop and release innovative products based upon its rich patent portfolio consisting of eighteen issued patents and six pending.      
Net loss $ 1,212,991 $ 1,067,957    
Net cash used in operating activities 542,249 864,559    
Cash 3,840,600 $ 7,765,692 $ 4,376,017 $ 8,010,161
Working capital 3,356,627      
Accumulated deficit $ 115,599,392   $ 114,386,401