Condensed Statements of Cash Flows - USD ($)	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash flows from operating activities:
Net loss	$ (4,615,000)	$ (5,020,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Common stock issued for services	174,000	95,000
Share based payments	219,000	330,000
Depreciation and amortization	135,000	90,000
Amortization of right of use asset	79,000	70,000
Payments of lease liabilities	(73,000)	(70,000)
Abandonment and impairment of capitalized patents pending	0	232,000
Other	0	(9,000)
Change in operating assets and liabilities:
Contract assets	(84,000)
Prepaid expenses and other costs	(28,000)	(332,000)
Accounts payable and accrued liabilities	(111,000)	103,000
Accrued compensation and taxes	176,000	(390,000)
Contract liabilities	(102,000)	0
Net cash used in operating activities	(4,230,000)	(4,901,000)
Cash flows from investing activities:
Acquisition of fixed assets	(57,000)	(60,000)
Disbursements for patents and other intangible assets	(179,000)	(651,000)
Net cash used in investing activities	(236,000)	(711,000)
Cash flows from financing activities:
Proceeds from issuance of units of common stock and warrants for cash, net of offering costs	8,667,000	0
Net cash provided by financing activities	8,667,000	0
Net increase (decrease) in cash and cash equivalents	4,201,000	(5,612,000)
Cash and cash equivalents, beginning of period	1,259,000	10,985,000
Cash and cash equivalents, end of period	$ 5,460,000	$ 5,373,000