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Nature of Business (Details Narrative) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Dec. 31, 2017
Dec. 31, 2016
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 over twenty issued patents and six pending.      
Net loss $ 1,100,375 $ 1,098,553 $ 2,168,332 $ 2,035,310    
Net cash used in operating activities     2,127,580 2,210,973    
Cash 6,462,631 $ 1,035,190 6,462,631 $ 1,035,190 $ 8,010,161 $ 3,092,172
Working capital 5,865,800   5,865,800      
Accumulated deficit $ 112,591,157   $ 112,591,157   $ 110,422,825