Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Feb. 28, 2023	Feb. 28, 2022
Statement of Cash Flows [Abstract]
Net loss	$ (3,410)	$ (3,992)
Adjustments to reconcile net loss to cash used in operating activities
Depreciation	78	15
Inventory write-down	4	36
Gain on extinguishment of PPP loans		(167)
Gain on extinguishment of derivative warrant liability, net	(237)	(61)
Change in fair value of derivative warrant liability	(582)	(477)
Gain on debt settlement		(4)
Common stock issued for services		74
Common stock warrants issued for services	50
Share-based compensation		612
Changes in operating assets and liabilities:
Inventory	(15)	(86)
Prepaid and other current assets	114	(90)
Operating lease right-of-use asset	184	167
Accounts payable and accrued expenses	364	387
Accrued interest on notes payable	492	1,056
Customer advances	14
Operating lease liability	(179)	(111)
Cash used in operating activities	(3,123)	(2,641)
Cash used in investing activities:
Purchase of property and equipment	(54)	(196)
Cash flows from financing activities:
Proceeds from issuance of common stock	3,270	2,653
Principal payments of notes payable	(228)	(147)
Proceeds from government assistance loans – PPP loan		91
Cash provided by financing activities	3,042	2,597
Net decrease in cash and cash equivalents	(135)	(240)
Cash and cash equivalents-beginning of year	150	390
Cash and cash equivalents-end of year	15	150
Cash paid for:
Interest	166	85
Income taxes
Supplemental schedule of non-cash transactions:
Fair value of warrants issued for note settlement	1,051
Accounts payable converted into shares of common stock		450
Accrued expenses converted into shares of common stock		100
Acquisition of property and equipment with notes payable		$ 288