Condensed Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Aug. 31, 2023	Aug. 31, 2022
Statement of Cash Flows [Abstract]
Net loss	$ (2,261)	$ (1,318)
Adjustments to reconcile net loss to cash used in operating activities
Depreciation and amortization	52	37
Inventory write-down	58	4
Change in fair value of derivative warrant liability	(8)	(741)
Changes in operating assets and liabilities:
Inventory	(4)	(14)
Prepaid and other current assets	93	147
Operating lease right-of-use asset	99	89
Accounts payable, accrued expenses and customer advances	(137)	266
Accrued interest on notes payable	683	118
Customer advances	(7)
Operating lease liability	(100)	(87)
Cash used in operating activities	(1,532)	(1,499)
Cash used in investing activities:
Purchase of property and equipment		(23)
Cash flows from financing activities:
Proceeds from issuance of common stock	1,610	1,668
Principal payments of notes payable	(41)	(188)
Cash provided by financing activities	1,569	1,480
Net increase (decrease) in cash and cash equivalents	37	(41)
Cash and cash equivalents-beginning of period	15	150
Cash and cash equivalents-end of period	52	108
Cash paid for:
Interest	85	91
Income taxes
Supplemental schedule of non-cash transactions:
Reclassification of prepaid expense to property and equipment	21
Adjustment to interest expense to account for the effective interest rate of note payable	61
Fair value of warrants issued for note settlement		$ 1,051