Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Cash flows from operating activities:
Net loss	$ (1,410,000)	$ (463,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	51,000	68,000
Patent asset impairment	0	100,000
Penalty added to Cherokee loan balance	0	120,000
Recovery of bad debts	(1,000)	(19,000)
(Reduction of) / provision for slow moving and obsolete inventory	(43,000)	1,000
Shares issued for services	15,000	0
Interest paid with restricted stock	0	36,000
Forgiveness of PPP loan	0	(332,000)
Forgiveness of PPP loan interest	0	(3,000)
Changes in:
Accounts receivable	242,000	103,000
Inventory	107,000	92,000
Employee retention credit refund	198,000	(400,000)
Prepaid expenses and other current assets	(48,000)	80,000
Right of use asset - Operating leases	27,000	36,000
Accounts payable	78,000	105,000
Accrued expenses and other current liabilities	47,000	(151,000)
Right of use liability - operating leases	(28,000)	(36,000)
Wages payable	(3,000)	(10,000)
Net cash used in operating activities	(768,000)	(673,000)
Cash flows from financing activities:
Proceeds from debt financing	955,000	75,000
Payments on debt financing	(90,000)	(25,000)
Proceeds from private placement	0	100,000
Proceeds from Lincoln Park financing	0	639,000
Proceeds from lines of credit	901,000	2,119,000
Payments on lines of credit	(1,079,000)	(2,218,000)
Net cash provided by financing activities	687,000	690,000
Net (decrease in) / increase in cash and cash equivalents	(81,000)	17,000
Cash and cash equivalents - beginning of period	115,000	98,000
Cash and cash equivalents - end of period	34,000	115,000
Non-Cash transactions
Interest paid with restricted stock	0	36,000
Forgiveness of PPP loan principal and interest	0	335,000
Patent asset impairment	0	100,000
Cash paid during period for interest	180,000	190,000
Cash paid during period for taxes	$ 37,000	$ 2,000