Annual report pursuant to Section 13 and 15(d)

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- 2. Summary of Significant Accounting Policies (Policies)
Notes Tables
Notes Details

8. Stock options and Warrants (Details Narrative)

v3.21.2

8. Stock options and Warrants (Details Narrative) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Share based compensation expense	$ 377,000	$ 383,000
Warrants [Member]
Aggregate intrinsic value of warrants outstanding	$ 0
Warrants vested	8,650,344
Warrants expected to vest	33,333
Warrants granted	6,117,013	11,180,084
Warrants exercised	1,155,000	10,629,493
Proceeds from warrant exercises	$ 58,000	$ 577,000
Warrants [Member] \| Consulting Agreement [Member]
Share based compensation expense	$ 16,000	$ 24,000
Warrants granted	399,996	266,664
Fair value of warrants granted	$ 16,000	$ 27,000
Expected life	2 years	2 years
Risk free interest rate - minimum	0.11%	1.56%
Risk free interest rate - maximum	0.19%	1.63%
Volatility - minimum	188.00%	148.00%
Volatility - maximum	200.00%	163.00%
Expected dividend yield	0.00%	0.00%
Warrants [Member] \| Convertible Notes [Member]
Warrants granted	5,717,017	10,912,420
Options [Member]
Options granted	3,599,998	4,987,500
Aggregate intrinsic value of options outstanding	$ 0
Unamortized compensation expense	$ 1,000
Weighted average life of options	5 years 6 months
Expected life	5 years 6 months	5 years
Expected dividend yield	0.00%	0.00%
Options [Member] \| Employees, Officers and Board of Directors [Member]
Options granted	3,599,998	4,687,500
Fair value of options at grant date	$ 373,000	$ 359,000
Share based compensation expense	$ 361,000	$ 359,000
Weighted average life of options	5 years 6 months

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Fair value of warrants granted

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The cash inflow associated with the amount received from holders exercising their stock warrants.

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The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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The estimated measure of the maximum percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The maximum risk-free interest rate assumption that is used in valuing an option on its own shares.

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Number of non-option equity instruments exercised by participants.

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Gross number of share options (or share units) granted during the period.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Intrinsic value of outstanding award under share-based payment arrangement. Excludes share and unit options.

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Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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