Equity (Tables)

6 Months Ended

Jun. 30, 2015

Stockholders' Equity [Abstract]

Key assumptions for fair value calculation, stock options

The fair value calculations are based on the following assumptions:

	Six Months Ended June 30, 2015	Six Months Ended June 30, 2014
Risk free interest rate	0.04% - 3.73%	0.04% - 4.89%
Expected life (years)	3.26 - 6.88	3.26 - 7.00
Expected volatility	93.63% - 198.38%	91.99% - 198.38%
Expected dividends	None	None

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

The following table summarizes the allocation of stock-based compensation expense related to stock option grants for the three and six months ended June 30:

	Three Months Ended June 30,		Three Months Ended June 30,
	2015	2014	2015	2014
Research and development	$ 47	$ 21	$ 113	$ 48
Sales and marketing	$ 34	$ 24	$ 86	$ 37
General and administrative	$ 65	$ 37	$ 145	$ 83
Director options	$ 12	$ 4	$ 27	$ 9
Total stock-based compensation expense	$ 158	$ 86	$ 371	$ 177

Summary of option activity

A summary of option activity under the Company's plans as of June 30, 2015 and 2014 is as follows:

Options	2015				2014
	Shares	Weighted Average Exercise Price Per Share	Weighted Average Remaining Contractual Life (Years)	Aggregate Intrinsic Value	Shares	Weighted Average Exercise Price Per Share	Weighted Average Remaining Contractual Life (Years)	Aggregate Intrinsic Value
Outstanding at January 1,	72,012	$ 0.04		$ -	69,537	$ 0.05		$ -
Granted	36,633	$ 0.02		$ -	2,500	$ 0.03		$ 7
Exercised	-	-		$ -	-	$ -		$ -
Forfeited or expired	(1,045)	$ 0.03		$ -	(50)	$ 0.22		$ -
Outstanding at June 30	107,600	$ 0.04	4.59	$ -	71,987	$ 0.05	4.60	$ 7
Vested and expected to vest at June 30	104,525	$ 0.03	3.24	$ -	46,864	$ 0.05	4.24	$ -
Exercisable at June 30	65,365	$ 0.04	3.56	$ -	51,984	$ 0.05	4.24	$ -

Summary of the significant ranges of outstanding and exercisable options

The following table summarizes significant ranges of outstanding and exercisable options as of June 30, 2015:

Range of Exercise Prices	Options Outstanding			Options Exercisable
	Number Outstanding	Weighted Average Remaining Contractual Life (in years)	Weighted Average Exercise Price Per Share	Number Outstanding	Weighted Average Exercise Price Per Share
$ 0.0100 - $0.0200	3,000	6.48	$ 0.019	334	$ 0.020
$0.0210 - $0.0300	54,009	5.38	$ 0.023	20,850	$ 0.025
$0.0310 - $0.0600	31,556	4.29	$ 0.046	25,147	$ 0.046
$0.0610 - $0.2000	19,035	2.55	$ 0.066	19,034	$ 0.066
	107,600	4.59	$ 0.037	65,365	$ 0.048

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

A summary of the status of the Company's non-vested shares as of June 30, 2015, is as follows:

Non-vested Shares	Shares	Weighted Average Grant-Date Fair Value Per Share
Non-vested at January 1, 2015	14,954	$ 0.0374
Granted	36,633	$ 0.0196
Forfeited	(1,020)	$ 0.0207
Vested	(8,332)	$ 0.0297
Non-vested at June 30, 2015	42,235	$ 0.0233

Information with respect to the classes of Preferred Stock

Information with respect to in-kind dividends issued on the Company's Preferred stock for the three and six-month periods ended June 30, 2015 and June 30, 2014 is as follows:

	Dividends				Beneficial Conversion Feature Related to dividends
	Three Months Ended June 30,		Six Months Ended June 30,		Three Months Ended June 30,		Six Months Ended June 30,
	2015	2014	2015	2014	2015	2014	2015	2014
Series A-1	$ 17	$ 21	$ 35	$ 41	$ -	$ -	$ -	$ -
Series B	313	284	615	558	-	-	-	-
Series C	127	115	250	226	-	13	13	50
Series D-1	179	107	324	201	-	12	16	43
Series D-2	149	132	292	255	-	-	-	-
Total	$ 785	$ 659	$ 1,516	$ 1,281	$ -	$ 25	$ 29	$ 93

Information with respect to dividends issued on the Company's preferred stock

Information with respect to in-kind dividends issued on the Company's Preferred stock for the three and six-month periods ended June 30, 2015 and June 30, 2014 is as follows:

	Dividends				Beneficial Conversion Feature Related to dividends
	Three Months Ended June 30,		Six Months Ended June 30,		Three Months Ended June 30,		Six Months Ended June 30,
	2015	2014	2015	2014	2015	2014	2015	2014
Series A-1	$ 17	$ 21	$ 35	$ 41	$ -	$ -	$ -	$ -
Series B	313	284	615	558	-	-	-	-
Series C	127	115	250	226	-	13	13	50
Series D-1	179	107	324	201	-	12	16	43
Series D-2	149	132	292	255	-	-	-	-
Total	$ 785	$ 659	$ 1,516	$ 1,281	$ -	$ 25	$ 29	$ 93

Summary of the warrants issued

A summary of the warrant activity is as follows:

	June 30, 2015		June 30, 2014
	Shares	Weighted Average Exercise Price Per Share	Shares	Weighted Average Exercise Price Per Share
Outstanding at beginning of period	213,521	$ 0.0289	77,155	$ 0.0289
Issued	27,399	$ 0.0275	72,589	$ 0.0275
Expired	(16,258)	$ 0.0500	(4,333)	$ 0.0225
Outstanding at end of period	224,662	$ 0.0272	145,411	$ 0.0289
Exercisable at end of period	224,662	$ 0.0272	145,411	$ 0.0289

Status of the warrants outstanding

A summary of the status of the warrants outstanding and exercisable as of June 30, 2015, is as follows:

Number of Shares	Weighted Average Remaining Life (Years)	Weighted Average Exercise Price Per Share
27,400	2.77	$ 0.0225
193,968	1.52	$ 0.0275
3,294	0.38	$ 0.0500
224,662	1.65	$ 0.0272