Equity (Tables)

6 Months Ended

Jun. 30, 2013

Stockholders' Equity [Abstract]

Key assumptions for fair value calculation, stock options

	Six Months Ended June 30, 2013	Six Months Ended June 30, 2012
Risk free interest rate	0.39% - 5.11%	0.62% - 5.11%
Expected life (years)	2.82 - 7.00	2.82 - 7.00
Expected volatility	91.99% - 198.38%	91.99% - 154.08%
Expected dividends	None	None

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

	Three Months Ended June 30,		Six Months Ended June 30,
	2013	2012	2013	2012
Research and development	$ 49	$ 52	$ 245	$ 121
Sales and marketing	17	24	117	43
General and administrative	100	37	42	87
Director options	10	7	25	16
Stock-based compensation expense	$ 176	$ 120	$ 429	$ 267

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		$ 4,449
Granted	26,554	$ 0.04		$ 1,188	1,500	$ 0.06		$ 90
Exercised	-	$     -		$ -	(153)	$ 0.06		$ (2)
Forfeited or expired	(610)	$ 0.14		$ (85)	(4,797)	$ 0.34		$ (1,654)
Outstanding at June 30	70,473	$ 0.05	5.51	$ 3,333	47,903	$ 0.06	5.59	$ 2,876
Vested and expected to vest at June 30	63,615	$ 0.05	5.51	$ 3,009	43,276	$ 0.06	5.59	$ 2,598
Exercisable at June 30	33,083	$ 0.05	4.94	$ 1,638	18,649	$ 0.08	5.01	$ 1,531

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	70,435	5.5	$ 0.05	33,045	$ 0.05
0.51 - 1.00	38	0.2	$ 0.75	38	$ 0.75
	70,473	5.5	$ 0.05	33,083	$ 0.05

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

Non-vested Shares	Shares	Weighted Average Grant-DateFair Value
Non-vested at January 1, 2013	21,210	$ 0.05
Granted	26,554	$ 0.04
Forfeited	(277)	$ 0.03
Vested	(10,098)	$ 0.05
Non-vested at June 30, 2013	37,389	$ 0.05

Information with respect to the class of preferred stock

	June 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	(15,063)	$ 0.0343	(4,403)	-
Outstanding at end of period	135,359	$ 0.0252	151,722	$ 0.0269
Exercisable at end of period	135,359	$ 0.0252	151,722	$ 0.0269

Summary of the warrants issued

	June 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	(15,063)	$ 0.0343	4,403	-
Outstanding at end of period	135,359	$ 0.0252	151,722	$ 0.0269
Exercisable at end of period	135,359	$ 0.0252	151,722	$ 0.0269

Status of the warrants outstanding

Number of Warrants	Weighted Average Remaining Life	Weighted Average Exercise Price per share
6,024	0.14	$ 0.0433
120,691	0.64	$ 0.0225
8,643	2.11	$ 0.0500
135,359	0.71	$ 0.0252