Warrants

3 Months Ended

12 Months Ended

Mar. 31, 2019

Dec. 31, 2018

Warrants [Abstract]

WARRANTS

12. WARRANTS

For the three months ended March 31, 2019

On March 20, 2019, the Company issued a warrant to purchase 50,000 shares of the Company’s common stock outside its 2015 Equity Plan to a contractor for services. This warrant has an exercise price of $1.06 per share and an expiration date of March 20, 2023, and vests after one year.

The following table summarizes the assumptions used to estimate the fair value of the warrants granted during the three months ended March 31, 2019 on the date of grant.

	March 31, 2019
Expected dividend yield		0	%
Expected volatility		90	%
Risk-free interest rate		2.40	%
Expected life of options		4.00 years

Under the Black-Scholes option pricing model, the fair value of the warrant to purchase 50,000 shares of the Company’s common stock granted during the three months ended March 31, 2019 is estimated at $33,913 on the date of grant. During the three months ended March 31, 2019, $1,022 in compensation expense was recognized on this warrant with a total of $32,891 to be recognized over the vesting period as of March 31, 2019.

The following table represents warrant activity as of and for the three months ended March 31, 2019:

	Number of Warrants		Weighted Average Exercise Price		Weighted Average Remaining Contractual Life in Years		Aggregate Intrinsic Value
Outstanding – December 31, 2018		2,280,000	$	0.72		3.44
Exercisable – December 31, 2018		2,280,000	$	0.72		3.44	$	0.00
Granted		50,000	$	1.06
Forfeited or Expired		0	$	0
Outstanding – March 31, 2018		2,330,000	$	0.73		3.21	$	0
Exercisable – March 31, 2018		2,280,000	$	0.72		3.19	$	1,132,500

The following table represents warrant activity as of and for the period ended March 31, 2018:

	Number of Warrants		Weighted Average Exercise Price per Share		Weighted Average Contractual Life in Years		Aggregate Intrinsic Value
Outstanding – December 31, 2017		2,232,500	$	1.36		4.34
Exercisable – December 31, 2017		2,232,500	$	1.36		4.34	$	0
Granted		0	$	0
Forfeited or Expired		0	$	0
Outstanding – March 31, 2018		2,232,500	$	1.36		4.09	$	0
Exercisable – March 31, 2018		2,232,500	$	1.36		4.09	$	0

12. WARRANTS

For the year ended December 31, 2018

As described above in Footnote #1 – Related Party Transactions, on September 26, 2018, the Company issued 100,000 warrants outside its 2015 Equity Plan to Global Security Innovative Strategies, LLC (“GSIS”) with an exercise price of $1.00 per share and an expiration date of September 26, 2022 and which were immediately vested.

The following table summarizes the assumptions used to estimate the fair value of the 100,000 stock warrants granted during the year ended December 31, 2018 on the date of grant.

	2018
Expected dividend yield		0	%
Expected volatility		91	%
Risk-free interest rate		2.93	%
Expected life of options		4.00 years

Under the Black-Scholes option pricing model, the fair value of the 100,000 warrants granted during the year ended December 31, 2018 is estimated at $37,467 on the date of grant. During the year ended December 31, 2018, $37,467 compensation expense was recognized on these 100,000 warrants.

For the year ended December 31, 2017

On August 3, 2017, upon approval of the Company’s board of directors, the Company issued outside its 2015 Equity Plan, 30,000 warrants to purchase the Company’s common stock to consultants for services provided. These warrants are immediately vested, are exercisable at an exercise price of $1.00 per share and expire on August 3, 2021. On December 21, 2018, the Board modified the exercise price of the 30,000 warrants to $0.50 per share. During the twelve months ended December 31, 2018 and 2017, $2,462 and $19,269 compensation expense, respectively, was recognized on these August 3, 2017 options.

On August 3, 2017, the Company issued a warrant to purchase 2,000,000 shares of the Company’s common stock to Dr. Philip Frost for services to be provided under the terms of his service to the Strategic Advisory Board through April 2018. These warrants immediately vested, are exercisable at an exercise price of $1.00 per shares and expire on August 3, 2022. On December 21, 2018, the Board modified the exercise price of the 2,000,000 warrant to $0.50 per share. During the twelve months ended December 31, 2018 and 2017, $143,375 and $1,391,793 compensation expense, respectively, was recognized on these August 3, 2017 warrants.

On November 9, 2017, upon approval of the Company’s board of directors, the Company issued outside its 2015 Equity Plan, 20,000 warrants to purchase the Company’s common stock to consultants for services provided. These warrants are immediately vested, are exercisable at an exercise price of $1.35 per share and expire on November 9, 2021. On December 21, 2018, the Board modified the exercise price of the 20,000 warrants to $0.50 per share. During the twelve months ended December 31, 2018 and 2017, $2,236 and $18,456 compensation expense, accordingly, was recognized on these November 9, 2017 warrants.

The following table summarizes the assumptions used to estimate the fair value of the 2,050,000 warrants granted during 2017, as of the remeasurement date of December 21, 2018:

	2017
Expected dividend yield		0	%
Expected volatility		80	%
Risk-free interest rate		2.62	%
Expected life of warrants		4-5 years

The following table represents warrant activity as of and for the period ended December 31, 2018 and 2017:

	Number of Warrants			Weighted Average Exercise Price		Weighted Average Remaining Contractual Life in Years		Aggregate Intrinsic Value
Outstanding – December 31, 2016		183,737		$	7.35		2.70
Exercisable – December 31, 2016		171,237		$	7.15		2.79	$	0.00
Granted		2,050,000		$	1.00
Forfeited or Expired		(1,237	)	$	303,37
Outstanding – December 31, 2017		2,232,500		$	1.36		4.34
Exercisable – December 31, 2017		2,232,500		$	1.36		4.34	$	0.00
Granted		100,000		$	1.00
Forfeited or Expired		(52,500	)	$	8.57
Outstanding – December 31, 2018		2,280,000		$	0.72		3.44
Exercisable – December 31, 2018		2,280,000		$	0.72		3.44	$	0.00