Condensed Statements of Cash Flows - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash flows from operating activities:
Net (loss)/ income	$ (132,000)	$ 1,000
Adjustments to reconcile net income / (loss) to net cash provided by operating activities:
Depreciation and amortization	22,000	23,000
Amortization of debt issuance costs	31,000	27,000
Provision for slow moving and obsolete inventory	21,000	21,000
Share-based payment expense	11,000	19,000
Changes in:
Accounts receivable	(55,000)	(117,000)
Inventory	58,000	104,000
Prepaid expenses and other current assets	29,000	(2,000)
Accounts payable	0	98,000
Accrued expenses and other current liabilities	(20,000)	2,000
Wages payable	(12,000)	(5,000)
Net cash (used in) / provided by operating activities	(47,000)	172,000
Cash flows from investing activities:
Patent application costs	(9,000)	(3,000)
Net cash used in investing activities	(9,000)	(3,000)
Cash flows from financing activities:
Payments on debt financing	(75,000)	(75,000)
Proceeds from lines of credit	1,403,000	1,513,000
Payments on lines of credit	(1,292,000)	(1,669,000)
Net cash provided by / (used in) financing activities	36,000	(231,000)
Net decrease in cash and cash equivalents	(20,000)	(61,000)
Cash and cash equivalents - beginning of period	156,000	158,000
Cash and cash equivalents - end of period	136,000	97,000
Supplemental disclosures of cash flow information
Cash paid during period for interest	40,000	39,000
Consulting expense prepaid with restricted stock	0	49,000
Debt issuance cost paid with restricted stock	$ 0	$ 96,000