OPTIONS AND WARRANTS TO PURCHASE COMMON STOCK (Tables)

3 Months Ended

Mar. 31, 2020

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule Of Warrants Or Rights [Table Text Block]

A summary of the status and changes of the warrants issued for the three months ended March 31, 2020:

	Shares Issuable
	upon Exercise of		Weighted Average
	Outstanding Warrants		Exercise Price
Outstanding at January 1, 2020		26,688,373	$	0.15
Issued		-		-
Exercised		-
Forfeited		-		-
Outstanding at March 31, 2020		26,688,373	$	0.15

Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]

A summary of the status of the warrants outstanding and exercisable at March 31, 2020 is presented below:

		Warrants Outstanding and Exercisable
		Shares Issuable		Weighted Average
		upon Exercise of		Remaining		Weighted Average
Exercise Price		Outstanding Warrants		Contractual Life (years)		Exercise Price
$	1.15		461,340		1.08	$	1.15
$	0.25		3,283,283		1.24	$	0.25
$	0.04		2,068,750		2.43	$	0.04
$	0.10		11,000,000		2.70	$	0.10
$	0.15		9,875,000		1.23	$	0.15
			26,688,373		1.93	$	0.15

Share-based Compensation, Stock Options, Activity [Table Text Block]

A summary of the status and changes of the options granted under stock option plans and other agreements for the three months ended March 31, 2020:

	Shares Issued		Weighted
	Upon Exercise of		Average
	Options		Exercise Price
Outstanding at December 31, 2019		60,676,568	$	0.26
Granted		-		-
Exercised		-		-
Forfeited		-		-
Outstanding at March 31, 2020		60,676,568	$	0.26

Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]

A summary of the status of the options outstanding at March 31, 2020 is presented below:

	Options Outstanding						Options Exercisable
Range of per share exercise price	Shares		Weighted average remaining contractual life		Per share weighted average exercise price		Shares		Weighted average remaining contractual life		Per share weighted average exercise price
$0.04 - $0.08		42,403,623		7.43	$	0.06		34,861,956		7.42	$	0.06
$0.10 - $0.84		13,330,885		2.68		0.42		13,330,885		2.68		0.42
$1.10 - $1.90		4,942,060		2.47		1.63		4,942,060		2.47		1.63
		60,676,568		5.98	$	0.26		53,134,901		5.77	$	0.29