Cover - shares	3 Months Ended
	Mar. 31, 2022	Jun. 16, 2022
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Mar. 31, 2022
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2022
Current Fiscal Year End Date	--12-31
Entity File Number	001-15465
Entity Registrant Name	Intellicheck, Inc.
Entity Central Index Key	0001040896
Entity Tax Identification Number	11-3234779
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	200 Broadhollow Road
Entity Address, Address Line Two	Suite 207
Entity Address, City or Town	Melville
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	11747
City Area Code	(516)
Local Phone Number	992-1900
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		18,868,095