Equity (Tables)

3 Months Ended

Mar. 31, 2013

Stockholders' Equity [Abstract]

Key assumptions for fair value calculation, stock options

	Three Months Ended March 31, 2013	Three Months Ended March 31, 2012
Risk free interest rate	0.04% - 5.11%	0.62% - 5.11%
Expected term (years)	2.82 - 7.00	2.82 - 7.00
Expected volatility	91.99% - 198.38%	93.63% - 147.41%
Expected dividends	None	None

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

	2013	2012
Research and development	$ 68	$ 70
Sales and marketing	25	21
General and administrative	146	51
Director	15	9
Total Stock-based compensation	$ 254	$ 151

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		$ 2,230	51,353	$ 0.09		$ 4,450
Granted	26,241	$ 0.04		$ 1,179	-	$     -		$ -
Exercised	-	$     -		$ -	(132)	$ 0.07		$ 2
Forfeited or expired	(500)	$ 0.09		$ 43	(983)	$ 0.06		$ 64
Outstanding at March 31	70,270	$ 0.05	5.75	$ 3,367	50,238	$ 0.09	5.47	$ 4,377
Vested and expected to vest at March 31	70,270	$ 0.05	5.05	$ 3,367	50,238	$ 0.09	5.47	$ 4,377
Exercisable at March 31	27,036	$ 0.05	5.05	$ 1,043	18,510	$ 0.16	4.31	$ 2,942

Summary of the significant ranges of outstanding and exercisable options

Range of Exercise Prices	Options Outstanding			Options Exercisable
	Number Outstanding	Weighted Average Remaining Contractual Term (in years)	Weighted Average Exercise Price	Number Outstanding	Weighted Average Exercise Price
$ 0.07 - $ 0.50	70,232	5.76	$ 0.05	26,998	$ 0.05
0.51 - 1.00	38	0.50	$ 0.75	38	$ 0.75
	70,270	5.75	$ 0.05	27,036	$ 0.05

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

Non-vested Shares	Shares	Weighted Average Grant-Date Fair Value
Non-vested at January 1, 2013	21,210	$ 0.05
Granted	26,241	$ 0.04
Exercised	-	$ 0.00
Forfeited	(277)	$ 0.03
Vested	(3,940)	$ 0.05
Non-vested at March 31, 2013	43,234	$ 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	Current Period Dividends in Kind	Shares of Preferred Stock Converted into Common Stock	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	19	146	972	6,943
Series B	August 2010	10%	Quarterly in Arrears	$ 1.50	$ 0.0433	248	140	10,307	238,037
Series C	December/March 2011	10%	Quarterly in Arrears	$ 1.50	$ 0.0225	103	39	4,278	190,133
Series D-1	November 2012	10%	Quarterly in Arrears	$ 1.00	$ 0.0225	28	-	1,152	51,200
Series D-2	November 2012	10%	Quarterly in Arrears	$ 1.00	$ 0.0500	81	-	3,384	67,680

Summary of the warrants issued

	March 31, 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)	$ 0.0280	(35,162)	$ 0.0264
Expired	(1,400)	$ 0.0225	4,403	-
Outstanding at end of period	149,022	$ 0.0257	151,722	$ 0.0269
Exercisable at end of period	149,022	$ 0.0257	151,722	$ 0.0269

Status of the warrants outstanding

Number of Warrants	Weighted Average Remaining Life	Weighted Average Exercise Price per Share
11,270	0.30	0.0433
129,109	0.82	0.0225
8,643	2.31	0.0500
149,022	0.88	0.0257