STOCKHOLDERS' EQUITY (Tables)

12 Months Ended

Dec. 31, 2020

Stock options outstanding by exercise price range

		Options Outstanding						Options Exercisable
		Shares		Weighted Average Exercise Price		Weighted Average Remaining Life in Years		Shares			Weighted Average Exercise Price
$	0.07 - $0.11		910,000	$	0.11		5.59		910,000	$	0.11
$	0.12 - $0.16		780,000	$	0.13		3.68		780,000	$	0.13
$	0.18 - $0.26		297,000	$	0.19		1.68		297,000	$	0.19
	Total		1,987,000	$	0.13		4.26		1,987,000	$	0.13

Valuation assumptions

	Year Ended December 31
	2020		2019
Volatility		NA		85	%
Expected term (years)		NA	10 years
Risk-free interest rate		NA		2.01	%
Dividend yield		NA		0	%

Stock Options

Stock option/warrant activity

	Year Ended December 31, 2020							Year Ended December 31, 2019
	Shares			Weighted Average Exercise Price		Aggregate Intrinsic Value as of December 31, 2020		Shares			Weighted Average Exercise Price		Aggregate Intrinsic Value as of December 31, 2019
Options outstanding at beginning of year		2,252,000		$	0.13				2,222,000		$	0.13
Granted		0		NA					80,000		$	0.07
Exercised		0		NA					0		NA
Cancelled/expired		(265,000	)	$	0.10				(50,000	)	$	0.20
Options outstanding at end of year		1,987,000		$	0.13	$	291,324		2,252,000		$	0.13	$	1,000
Options exercisable at end of year		1,987,000		$	0.13				2,172,000		$	0.13

Warrants

Stock option/warrant activity

	Year Ended December 31, 2020						Year Ended December 31, 2019
	Shares			Weighted Average Exercise Price		Aggregate Intrinsic Value	Shares			Weighted Average Exercise Price		Aggregate Intrinsic Value
Warrants outstanding at beginning of year		2,000,000		$	0.18			2,000,000		$	0.18
Granted		0		NA				0		NA
Exercised		0		NA				0		NA
Cancelled/expired		(2,000,000	)	NA				(0	)	NA
Warrants outstanding at end of year		0		NA		None		2,000,000		$	0.18	None
Warrants exercisable at end of year		0		NA				2,000,000		$	0.18