Annual report pursuant to Section 13 and 15(d)

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

v3.21.2
8. Stock Options and Warrants (Details-Options by Exercise Price Per Share) - Options [Member] - $ / shares
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Outstanding Options      
Options outstanding 32,480,601 39,750,603 35,301,300
Life (Years), options outstanding 5 years 6 months    
Weighted Average Exercise Price, options outstanding $ 0.18 $ 0.20 $ 0.22
Exercisable Options      
Options exercisable 32,380,601    
Weighted Average Exercise Price, options exercisable $ 0.18    
$0.05 - $0.24 [Member]      
Outstanding Options      
Options outstanding 21,505,551    
Life (Years), options outstanding 7 years    
Weighted Average Exercise Price, options outstanding $ 0.1    
Exercisable Options      
Options exercisable 21,405,551    
Weighted Average Exercise Price, options exercisable $ 0.1    
$0.25 - $0.49 [Member]      
Outstanding Options      
Options outstanding 10,353,552    
Life (Years), options outstanding 2 years 6 months    
Weighted Average Exercise Price, options outstanding $ 0.3    
Exercisable Options      
Options exercisable 10,353,552    
Weighted Average Exercise Price, options exercisable $ 0.3    
$0.50 - $0.99 [Member]      
Outstanding Options      
Options outstanding 471,052    
Life (Years), options outstanding 3 years 3 months 19 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 2 years 7 months 6 days    
Weighted Average Exercise Price, options outstanding $ 1.18    
Exercisable Options      
Options exercisable 150,446    
Weighted Average Exercise Price, options exercisable $ 1.18