Quarterly report pursuant to Section 13 or 15(d)

8. Stock options and Warrants (Details Narrative)

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8. Stock options and Warrants (Details Narrative) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Valuation assumptions        
Proceeds from exercise of warrants     $ 647,000 $ 362,000
Compensation costs     $ 340,000 653,000
Options [Member]        
Weighted average remaining contractual life     5 years 4 months 24 days  
Options granted, shares     2,083,335  
Option exercisable price $ 0.18   $ 0.18  
Valuation assumptions        
Options vested, share based compensation expense $ 117,000 $ 95,000 $ 340,000 653,000
Stock price $ 0.08   $ 0.08  
Aggregate intrinsic value of options outstanding $ 208,036   $ 208,036  
Future unamortized compensation expense on unvested outstanding options 114,127   $ 114,127  
Stock issued for exercise of warrants, shares     179,710  
Proceeds from exercise of stock options     $ 13,000  
Options [Member] | Board of Directors [Member]        
Options granted, shares     2,083,335  
Fair value of options at grant date     $ 313,000  
Valuation assumptions        
Expected life     5 years  
Risk free interest rate     1.70%  
Volatility     118.00%  
Expected dividend yield     0.00%  
Warrants [Member]        
Valuation assumptions        
Warrants granted     4,472,188  
Warrant exercise price     $ 0.06  
Aggregate intrinsic value of warrants outstanding 68,000   $ 68,000  
Stock issued for exercise of warrants, shares     12,517,773  
Proceeds from exercise of warrants     $ 634,000  
Compensation costs $ 0 $ 2,000 $ 0 $ 1,000