Cover - shares	3 Months Ended
	Mar. 31, 2024	May 13, 2024
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Entity Interactive Data Current	Yes
Amendment Flag	false
Document Period End Date	Mar. 31, 2024
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q1
Entity Information [Line Items]
Entity Registrant Name	COYNI, INC.
Entity Central Index Key	0000768216
Entity File Number	000-22711
Entity Tax Identification Number	76-0640970
Entity Incorporation, State or Country Code	NV
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Contact Personnel [Line Items]
Entity Address, Address Line One	3131 Camino Del Rio N, Suite 1400
Entity Address, City or Town	San Diego
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	92108
Entity Phone Fax Numbers [Line Items]
City Area Code	(855)
Local Phone Number	201-1613
Entity Listings [Line Items]
Entity Common Stock, Shares Outstanding		101,301,968