Stockholder's Equity (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2019

Dec. 31, 2018

Equity [Abstract]

Schedule of warrant activity

The was no warrant activity for the three months ended March 31, 2019:

	Number of Shares		Weighted Average Exercise Price		Weighted Average Remaining Life
Outstanding at December 31, 2018		46,201,477	$	0.08		1.9 Years
Outstanding at March 31, 2019		46,201,477	$	0.08		1.6 Years

	Number of Shares			Weighted Average Exercise Price		Weighted Average Remaining Life
Outstanding at January 1, 2017		51,138,697		$	0.11		2.8 Years
Granted		1,153,846		$	0.14		5.0 Years
Exercised/Cancelled		(4,128,000	)	$	0.08
Outstanding at December 31, 2017		48,164,543		$	0.11		2.9 Years
Granted		2,470,267		$	0.14		5.0 Years
Exercised/Cancelled		(4,333,333	)	$	0.05		—
Outstanding at December 31, 2018		46,201,477		$	0.08		1.9 Years

Schedule of black - scholes option-pricing model valuation assumption

The Company did not grant any stock options in the first three months of 2019. During the year ended December 31, 2018, the Company determined the grant date fair value of the options granted using the Black Scholes Method. The following assumptions were used in the year ended December 31, 2018:

Expected Volatility – 79-93%

Expected Term – 2.5 – 5.9 Years

Risk Free Rate – 2.4 – 3.0%

Dividend Rate – 0.00%

	2018	2017
Expected Volatility	79.0% to 93.0%	79.0% to 93.0%
Expected Term	2.5 – 5.9 Years	2.5 – 5.9 Years
Risk Free Rate	2.42% – 3.00%	1.16% to 1.49%
Dividend Rate	0.00%	0.00%

Schedule of outstanding stock options

Activity related to stock options for the three months ended March 31, 2019 is summarized as follows:

			Weighted Average		Weighted Average
	Number of		Exercise		Contractual		Aggregate
	Shares		Price		Term (Yrs.)		Intrinsic Value
Outstanding as of December 31, 2018		106,253,339	$	0.20		7.4	$	1,989,163
Granted		—		—
Forfeitures		—		—
Outstanding as of March 31, 2019		106,253,339		0.20		7.1	$	1,989,163
Exercisable as of March 31, 2019		97,165,278	$	0.20		7.1	$	1,886,038

	Number of Shares			Weighted Average Exercise Price		Weighted Average Contractual Term (Yrs.)		Aggregate Intrinsic Value
Outstanding as of January 1, 2017		86,925,000		$	0.21		8.7	$	7,698,650
Granted		21,250,000		$	0.11		10.0	$	7,475,000
Forfeited		(4,966,669	)	$	0.08		—	$	—
Outstanding as of December 31, 2017		103,208,331		$	0.19		9.5	$	10,023,400
Granted		6,220,000		$	0.22		10.0	$	2,868,750
Exercised		(3,174,992	)	$	0.13		—	$	—
Outstanding as of December 31, 2018		106,253,339		$	0.20		8.3	$	11,457,291
Exercisable as of December 31, 2018		92,925,694		$	0.20		7.4	$	3,316,208

Schedule of stock option

The following table summarizes stock option information as of March 31, 2019:

				Weighted Average
				Contractual
Exercise Price		Outstanding		Life (Yrs.)		Exercisable
$	0.00001		3,500,000		6.5		3,500,000
	0.05		32,783,339		7.3		30,720,833
	0.10		27,200,000		7.5		25,811,111
	0.12		970,000		9.5		—
	0.13		250,000		8.6		83,333
	0.15		2,800,000		6.6		2,800,000
	0.22		2,750,000		8.8		750,000
	0.25		2,500,000		8.6		1,166,667
	0.26		500,000		9.1		—
	0.29		1,000,000		8.0		333,334
	0.40		1,000,000		6.9		1,000,000
	0.45		31,000,000		6.6		31,000,000
			106,253,339		7.1		97,165,278

Exercise Price		Outstanding		Weighted Average Contractual Life (Yrs.)		Exercisable
$	0.0001		3,500,000		6.8		3,500,000
$	0.05		32,783,339		7.6		28,314,583
$	0.1		27,200,000		7.8		24,977,778
$	0.12		970,000		9.8		—
$	0.13		250,000		8.8		83,333
$	0.15		2,800,000		6.9		2,800,000
$	0.22		2,750,000		9.0		750,000
$	0.25		2,500,000		8.9		500,000
$	0.26		500,000		9.3		—
$	0.29		1,000,000		8.3		—
$	0.4		1,000,000		7.2		1,000,000
$	0.45		31,000,000		6.9		31,000,000
					7.4
			106,253,339				92,925,694