Nature of Business (Details Narrative) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Jun. 30, 2017	Sep. 30, 2018	Sep. 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 seventeen issued patents and seven pending.
Net loss	$ 1,131,219	$ 1,074,845	$ 3,299,551	$ 3,110,155
Net cash used in operating activities			3,207,299	2,895,584
Cash	5,388,544		5,388,544	$ 8,940,762	$ 8,010,161	$ 3,092,172
Working capital	4,838,371		4,838,371
Accumulated deficit	$ 113,722,376		$ 113,722,376		$ 110,422,825