CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (1,432)	$ (1,694)
Adjustments to reconcile net loss to net cash used in operating activities:
Amortization of debt issuance costs and discounts	78	236
Amortization of beneficial conversion feature	0	8
Stock based compensation	88	122
Change in fair value of warrants	0	(448)
Change in fair value of derivative liability	(8)	88
Amortization of lease right-of-use-asset	33	0
Expense for warrants issued to consultants	79	477
(Gain) loss from forgiveness of debt	(75)	185
Other non-cash expenses (income)	157	0
Change in operating assets and liabilities:
Accounts receivable	16	(2)
Inventory	2	(26)
Other current assets	317	24
Other non-current assets	0	(17)
Accounts payable and accrued liabilities	74	15
Lease liabilities	(32)	0
Deferred revenue	175	20
NET CASH USED IN OPERATING ACTIVITIES	(528)	(1,012)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of property and equipment	(31)	(5)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from warrant exercises	495	0
Payments made on notes payable	(133)	(1,368)
Proceeds from debt financing, net of discounts and debt issuance costs	0	1,044
Note payable default penalty	0	56
Proceeds from Series F offering, net of costs	0	1,436
Proceeds from Series F-2 offering, net of costs	0	539
Proceeds from Series G offering, net of costs	0	125
Redemption of Series G preferred stock	0	(75)
NET CASH PROVIDED BY FINANCING ACTIVITIES	362	1,757
NET CHANGE IN CASH	(197)	740
Cash at beginning of period	643	182
CASH AT END OF PERIOD	446	922
SUPPLEMENTAL DISCLOSURE FOR OPERATING ACTIVITIES:
Cash paid for interest	14	541
SUPPLEMENTAL DISCLOSURE FOR NON-CASH INVESTING AND FINANCING ACTIVITIES:
Dividends on preferred stock	$ 629	177
Settlement of interest through common stock issuance	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	377
Settlement of dividends through common stock issuance	646	31
Settlement of accounts payable through common stock issuance	0	24
Warrants exchanged for fixed price warrants	0	1,755
Conversion of Series D Preferred Shares into Common Stock	118	0
Conversion of Series E Preferred Shares into Common Stock	800	0
Conversion of Series F Preferred Shares into Common Stock	296	0
Conversion of Series F-2 Preferred Shares into Common Stock	$ 426	$ 0