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Stockholders' Equity (Tables)

9 Months Ended

Sep. 30, 2018

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule of fair value of derivative liabilities using Black-Scholes option-pricing model

		2018		2017
Expected volatility		191% - 196%		125% - 214%
Risk free interest rate		2.44% - 2.58%		1.31% - 2.57%
Expected dividend yield		-		-
Expected option term (in years)		3-5		0.9 - 8.1
Weighted average grant date fair value		$0.21 – 0.22		$0.12 - 0.45

Warrants [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Summary of outstanding service-based options

		Number of				Weighted Average Exercise				Year of
		Shares				Price				Expiration
Balance at December 31, 2016			1,954,981			$	0.19			2017 - 2019
Issued			2,634,228				0.40			2018 - 2020
Exercised			(1,500,000	)			0.12			2017
Balance at December 31, 2017			3,089,119				0.40			2018 - 2020
Issued			2,491,305				0.29			2023 - 2028
Exercised			-
Balance at September 30, 2018			5,580,424			$	0.35			2018 - 2028

Service-Based Stock Options [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Summary of outstanding service-based options

		Number of
		Options
Balance at December 31, 2016			10,700,273
Issued			1,600,000
Exercised			(1,339,473	)
Balance at December 31, 2017			10,960,800
Issued			600,000
Expired			(500,000	)
Exercised			(40,800	)
Balance at September 30, 2018			11,020,000

Summary of significant assumptions used to determine fair values of options issued using Black-Scholes option-pricing model

Significant assumptions:
Risk-free interest rate at grant date			0.65% - 2.84	%
Expected stock price volatility			96.56% -180.45	%
Expected dividend payout			-
Expected option life-years			3 years
Weighted average grant date fair value		$	0.02 - 0.32
Forfeiture rate			0.01	%

Summary of outstanding service-based options exercise price

Exercise Price				Number of Options				Weighted Average  Remaining Contractual Life
$	0.20 - $0.25				8,720,000			4 years
$	0.35				725,000			9 years
$	0.40				1,575,000			4 years
	Total				11,020,000

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