Equity (Tables)

9 Months Ended

Sep. 30, 2013

Stockholders' Equity [Abstract]

Key assumptions for fair value calculation, stock options

	Nine-months Ended September 30, 2013	Nine-months Ended September 30, 2012
Risk free interest rate	0.35% - 4.92%	0.62% - 5.11%
Expected life (years)	2.82 - 7.00	2.82 - 7.00
Expected volatility	91.99% - 198.38%	91.99% - 180.36%
Expected dividends	None	None

Allocation of stock-based compensation expense related to stock option grants

	Three Months Ended September 30,		Nine months Ended September 30,
	2013	2012	2013	2012
Research and development	$ 36	$ 45	$ 153	$ 166
Sales and marketing	13	27	55	70
General and administrative	75	30	320	117
Director options	7	7	32	23
Stock-based compensation expense	$ 131	$ 109	$ 560	$ 376

Summary of option activity

Options	2013				2012
	Shares	Weighted Average Exercise Price	Weighted Average Remaining Contractual Term	Aggregate Intrinsic Value	Shares	Weighted Average Exercise Price	Weighted Average Remaining Contractual Term	Aggregate Intrinsic Value
Outstanding at January 1,	44,529	$ 0.05		$ -	51,353	$ 0.09		$ 4,449
Granted	26,554	$ 0.04		$ -	2,000	$ 0.06		$ 120
Exercised	-	$     -		$ -	(184)	$ 0.07		$ (2)
Forfeited or expired	(1,066)	$ 0.13		$ -	(7,089)	$ 0.26		$ (1,830)
Outstanding at September 30	70,017	$ 0.05	5.24	$ -	46,080	$ 0.06	5.38	$ 2,237
Vested and expected to vest at September 30	63,204	$ 0.05	5.24	$ -	41,656	$ 0.06	5.38	$ 2,465
Exercisable at September 30	38,793	$ 0.05	4.73	$ -	21,411	$ 0.07	4.96	$ 1,603

Summary of the significant ranges of outstanding and exercisable options

Range of Exercise Prices	Options Outstanding			Options Exercisable
	Number Outstanding	Weighted Average Remaining Contractual Life (in years)	Weighted Average Exercise Price	Number Outstanding	Weighted Average Exercise Price
$ 0.02 - $ 0.50	70,017	5.24	$ 0.05	38,793	$ 0.05

Summary of the status of the Company's non-vested shares

Non-vested Shares	Shares	Weighted Average Grant-Date Fair Value
Unvested at January 1, 2013	21,210	$ 0.05
Granted	26,554	$ 0.04
Forfeited	(682)	$ 0.14
Vested	(15,858)	$ 0.06
Unvested at September 30, 2013	31,224	$ 0.04

Information with respect to the class of preferred stock

Class of Preferred Stock	Issue Date	Annual Dividend	Annual Dividend Payable, in Cash or In Kind	Liquidation Preference	Conversion Price	YTD Dividend Shares in Kind	Total Preferred Shares Outstanding	Common Shares to be issued if Fully Converted
Series A-1	May 2008	8%	Quarterly in Arrears	$ 1.00	$ 0.1400	58	1,011	7,221
Series B	August 2010	10%	Quarterly in Arrears	$ 1.50	$ 0.0433	771	10,830	250,115
Series C	December/March 2011	10%	Quarterly in Arrears	$ 1.50	$ 0.0225	320	4,496	199,822
Series D-1	November 2012/May 2013	10%	Quarterly in Arrears	$ 1.00	$ 0.0225	95	1,449	64,400
Series D-2	November 2012/May 2013	10%	Quarterly in Arrears	$ 1.00	$ 0.0500	288	4,511	90,220
Total						1,532

Summary of the warrants issued

	September 30, 2013		December 31, 2012
	Warrants	Weighted Average Exercise Price	Warrants	Weighted Average Exercise Price
Outstanding at beginning of period	151,722	$ 0.0269	182,644	$ 0.0261
Issued	-	-	8,643	$ 0.0500
Exercised	(1,300)	$ 0.0225	(35,162)	$ 0.0264
Expired	(21,087)	$ 0.0369	(4,403)	-
Outstanding at end of period	129,335	$ 0.0252	151,722	$ 0.0269
Exercisable at end of period	129,335	$ 0.0252	151,722	$ 0.0269

Status of the warrants outstanding

Number of Warrants	Weighted Average Remaining Life	Weighted Average Exercise Price per share
120,692	0.44	$ 0.0225
8,643	1.86	$ 0.0500
129,335	0.53	$ 0.0252