Balance Sheets - USD ($) $ in Thousands	Feb. 28, 2023	Feb. 28, 2022
Current assets
Cash and cash equivalents	$ 15	$ 150
Inventories	155	144
Prepaid and other current assets	142	256
Total current assets	312	550
Property and equipment, net	461	485
Operating lease right-of-use asset	816	1,000
Security deposit	160	160
Total assets	1,749	2,195
Current liabilities
Accounts payable (including $226 and $209 due to related party, respectively)	2,317	1,582
Accrued expenses (including $1,145 and $750 due to related party, respectively)	1,830	1,692
Customer advances	454	440
Notes payable, current portion	92	98
Convertible notes payable, current portion-past due	1,403	1,403
Convertible note payable-related party-past due	3,000	3,000
Notes payable-related parties, current portion (includes $700 past due)	4,714	12,996
Operating lease liability, current portion	207	180
Derivative warrant liability	9	828
Total current liabilities	14,026	22,219
Notes payable, net of current portion	256	328
Note payable-related party, net of current portion	7,065
Operating lease liability, net of current portion	660	867
Total liabilities	22,007	23,414
Commitments and contingencies
Shareholders’ deficit
Common stock: $0.0001 par value; 150,000,000 shares authorized; 94,648,346 and 83,119,104 issued and outstanding at February 28, 2023 and February 28, 2022, respectively.	9	8
Additional paid-in capital	454,507	450,137
Accumulated deficit	(474,774)	(471,364)
Total shareholders’ deficit	(20,258)	(21,219)
Total liabilities and shareholders’ deficit	$ 1,749	$ 2,195