CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (507)	$ (517)
Adjustments to reconcile net loss to net cash used in operating activities:
Amortization of debt issuance costs and discounts	41	64
Amortization of beneficial conversion feature	0	8
Stock based compensation	44	62
Change in fair value of warrants	0	(448)
Change in fair value of derivatives	6	88
Amortization of lease right-of-use-asset	16	0
Expense for warrants issued to consultants	79	398
Gain from forgiveness of debt	(41)	(87)
Other non-cash expenses (income)	6	0
Change in operating assets and liabilities:
Accounts receivable	6	0
Inventory	1	(1)
Other current assets	(76)	46
Other non-current assets	0	(18)
Accounts payable and accrued liabilities	84	65
Lease liabilities	(15)	0
Deferred revenue	177	20
NET CASH USED IN OPERATING ACTIVITIES	(179)	(320)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of property and equipment	(14)	(1)
NET CASH USED FOR INVESTING ACTIVITIES	(14)	(1)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from warrant exercises	365	0
Payments made on notes payable	(90)	(557)
Proceeds from Series F offering, net of costs	0	1,818
Proceeds from Series G offering, net of costs	0	125
NET CASH PROVIDED BY FINANCING ACTIVITIES	275	1,386
NET CHANGE IN CASH	82	1,065
Cash at beginning of period	643	182
CASH AT END OF PERIOD	725	1,247
SUPPLEMENTAL DISCLOSURE FOR OPERATING ACTIVITIES:
Cash paid for interest	6	405
SUPPLEMENTAL DISCLOSURE FOR NON-CASH INVESTING AND FINANCING ACTIVITIES:
Dividends on preferred stock	548	55
Common stock issued for payment of interest	81
Issuance of series F-2 preferred stock	0	2,559
Issuance of warrants to finders in connection with Series F and Series F-2 preferred stock	0	151
Common stock issued for payment of dividends	592	14
Conversion of Series E Preferred Shares into Common Stock	725	1,755
Conversion of Series F Preferred Shares into Common Stock	$ 13	$ 0