Nature of Business (Details Narrative) - USD ($)		3 Months Ended								12 Months Ended
	Aug. 04, 2014	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
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		$ 664,000	$ 1,131,000	$ 1,101,000	$ 1,068,000	$ 2,910,000	$ 1,075,000	$ 1,099,000	$ 937,000	$ 3,963,576	$ 6,020,505
Net cash used in operating activities										4,220,611	3,745,285
Cash		4,376,017				8,010,161				4,376,017	8,010,161
Accumulated deficit		$ 114,386,401				$ 110,422,825				$ 114,386,401	110,422,825
Common stock value											$ 8,512,861
IPO [Member]
Common stock value	$ 4,168,750
Common stock per share	$ 2.25
Proceeds from equity raise	$ 8,513,000