Condensed Balance Sheets (Unaudited) - USD ($) $ in Thousands	Aug. 31, 2023	Feb. 28, 2023
Current assets
Cash and cash equivalents	$ 52	$ 15
Inventories	101	155
Prepaid and other current assets	28	142
Total current assets	181	312
Property and equipment, net	430	461
Operating lease right-of-use asset	717	816
Security deposit	160	160
Total assets	1,488	1,749
Current liabilities
Accounts payable and accrued expenses (including $371 and $376 due to related party, respectively)	2,621	2,758
Accrued interest (including $1,701 and $995 due to related party, respectively)	2,129	1,389
Customer advances	447	454
Convertible notes payable, past due	1,403	1,403
Convertible note payable-related party, past due	3,000	3,000
Notes payable, current portion	93	92
Notes payable-related parties, current portion	4,718	4,714
Operating lease liability, current portion	222	207
Derivative warrant liability	1	9
Total current liabilities	14,634	14,026
Notes payable, non-current portion	214	256
Note payable-related party, non-current portion	7,004	7,065
Operating lease liability	545	660
Total liabilities	22,397	22,007
Commitments and contingencies
Shareholders’ deficit
Common stock: $0.0001 par value; 150,000,000 shares authorized; 99,525,617 and 94,648,346 issued and outstanding at August 31, 2023 and February 28, 2023, respectively.	10	9
Additional paid-in capital	456,116	454,507
Accumulated deficit	(477,035)	(474,774)
Total shareholders’ deficit	(20,909)	(20,258)
Total liabilities and shareholders’ deficit	$ 1,488	$ 1,749