Nature of Business (Details Narrative) - USD ($)		3 Months Ended		9 Months Ended
	Jun. 23, 2020	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Number of patents, description				Intellicheck continues to develop and release innovative products based upon its rich patent portfolio consisting of twenty issued patents and four pending patents.
Net loss		$ 32,412	$ (568,230)	$ (701,259)	$ (2,654,898)
Net cash used in operating activities				(310,922)	$ (2,089,687)
Cash		12,812,322		12,812,322		$ 3,350,853
Working capital		12,736,959		12,736,959
Accumulated deficit		$ (117,636,371)		$ (117,636,371)		$ (116,935,112)
Public Offering [Member]
Number of common stock shares issued	1,769,230
Shares issued price per share	$ 6.50
Proceeds from offering	$ 10,570,000