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9. Outstanding Warrants (Details) - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Stockholders' deficit:
Dividend yield	0.00%	0.00%
Risk-free interest rate	2.25%	1.32%
Expected volatility	92.20%	68.50%
Expected life (years)	2 years	2 years
Market value per share on grant date	$ 1.05	$ 1.43
Exercise price per share	.01	0.01
Fair value per share on grant date	$ 1.04	$ 1.42

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Exercise price per share or per unit of warrants or rights outstanding.

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-Topic 235
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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 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 risk-free interest rate assumption that is used in valuing an option on its own shares.

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Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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