Statements of Cash Flows (USD $)	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Cash flows from operating activities:
Net loss	$ (206,000)	$ (425,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	30,000	69,000
Amortization of debt issuance costs	12,000	12,000
Provision for bad debts	0	(15,000)
Provision for slow moving and obsolete inventory	24,000	(6,000)
Share-based payment expense	6,000	12,000
Changes in:
Accounts receivable	(57,000)	(131,000)
Inventory	(98,000)	221,000
Prepaid expenses and other current assets	(35,000)	(25,000)
Accounts payable	244,000	266,000
Accrued expenses and other current liabilities	(35,000)	(68,000)
Wages payable	(41,000)	24,000
Other liabilities	1,000	0
Net cash used in operating activities	(155,000)	(66,000)
Cash flows from investing activities:
Purchase of property, plant and equipment	(1,000)	(2,000)
Patent application costs	(20,000)	0
Net cash used in investing activities	(21,000)	(2,000)
Cash flows from financing activities:
Payments on debt financing	(32,000)	(45,000)
Net proceeds from line of credit	121,000	159,000
Net cash provided by financing activities	89,000	114,000
Net increase / (decrease) in cash and cash equivalents	(87,000)	46,000
Cash and cash equivalents - beginning of period	93,000	37,000
Cash and cash equivalents - end of period	6,000	83,000
Supplemental disclosures of cash flow information
Cash paid during period for interest	$ 65,000	$ 69,000