Quarterly report pursuant to Section 13 or 15(d)

8. Stock Options and Warrants (Details-Options by Exercise Price Per Share)

v3.19.3
8. Stock Options and Warrants (Details-Options by Exercise Price Per Share) - Options [Member] - $ / shares
9 Months Ended
Sep. 30, 2019
Dec. 31, 2018
Outstanding Options    
Options outstanding 39,450,603 35,301,300
Life (Years), options outstanding 3 months  
Weighted Average Exercise Price, options outstanding $ 0.20 $ 0.22
Exercisable Options    
Options exercisable 38,343,833  
Weighted Average Exercise Price, options exercisable $ 0.21  
$0.05 - $0.24 [Member]    
Outstanding Options    
Options outstanding 17,915,553  
Life (Years), options outstanding 7 years 9 months 18 days  
Weighted Average Exercise Price, options outstanding $ 0.10  
Exercisable Options    
Options exercisable 16,808,783  
Weighted Average Exercise Price, options exercisable $ 0.10  
$0.25 - $0.49 [Member]    
Outstanding Options    
Options outstanding 20,913,552  
Life (Years), options outstanding 2 years 6 months  
Weighted Average Exercise Price, options outstanding $ 0.27  
Exercisable Options    
Options exercisable 20,913,552  
Weighted Average Exercise Price, options exercisable $ 0.27  
$0.50 - $0.99 [Member]    
Outstanding Options    
Options outstanding 471,052  
Life (Years), options outstanding 4 years 7 months 6 days  
Weighted Average Exercise Price, options outstanding $ 0.85  
Exercisable Options    
Options exercisable 471,052  
Weighted Average Exercise Price, options exercisable $ 0.85  
$1.00 - $2.00 [Member]    
Outstanding Options    
Options outstanding 150,446  
Life (Years), options outstanding 3 years 9 months 18 days  
Weighted Average Exercise Price, options outstanding $ 1.18  
Exercisable Options    
Options exercisable 150,446  
Weighted Average Exercise Price, options exercisable $ 1.18