DOCUMENT AND ENTITY INFORMATION	6 Months Ended
	Sep. 30, 2012	Nov. 09, 2012
Entity Registrant Name	UNIVERSAL SECURITY INSTRUMENTS INC
Entity Central Index Key	0000102109
Current Fiscal Year End Date	--03-31
Entity Filer Category	Smaller Reporting Company
Trading Symbol	uuu
Entity Common Stock, Shares Outstanding		2,312,759
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2012
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2013