Cover - USD ($)	12 Months Ended
	Dec. 31, 2022	Mar. 28, 2023	Jun. 30, 2022
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2022
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	001-15465
Entity Registrant Name	Intellicheck, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	11-3234779
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
Title of 12(b) Security	Common Stock, $0.001 par value
Trading Symbol	IDN
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
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
ICFR Auditor Attestation Flag	false
Entity Shell Company	false
Entity Public Float			$ 25,397,868
Entity Common Stock, Shares Outstanding		19,035,791
Documents Incorporated by Reference	Proxy for Annual Meeting of Stockholders May 4, 2023
Entity Central Index Key	0001040896
Document Fiscal Period Focus	FY
Amendment Flag	false
Document Fiscal Year Focus	2022