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10. Stockholders' deficit (Tables)
3 Months Ended
Mar. 31, 2016
Equity [Abstract]  
Warrants outstanding
    Number of warrants outstanding   Weighted average exercise price per share
                     
  Outstanding at January 1, 2015       6,300,000     $ 0.143  
  Granted       —         —    
  Cancelled/forfeited       —         —    
  Exercised       —         —    
  Outstanding at December 31, 2015       6,300,000       0.143  
  Granted       —         —    
  Cancelled/forfeited       (4,500,000 )     0.150  
  Exercised       —         —    
  Outstanding at March 31, 2016     $ 1,800,000     $ 0.126  

 

The following table summarizes information about warrants outstanding at March 31, 2016

 

 

 

Exercise Price

 

 

Number of warrants

  Weighted average remaining life   Weighted average exercise price
                             
$ 0.003       300,000       *     $ 0.003  
$ 0.150       1,500,000       0.72       0.150  
          1,800,000             $ 0.126  
Options Outstanding
    Number of options outstanding   Weighted average exercise price per share
                     
  Outstanding at January 1, 2015       480,000     $ 0.12  
  Granted       —         —    
  Cancelled/forfeited       —         —    
  Exercised       —         —    
  Outstanding at December 31, 2015       480,000       0.12  
  Granted       —         —    
  Cancelled/forfeited       —         —    
  Exercised       —         —    
  Outstanding at March 31, 2016     $ 480,000     $ 0.12  

 

The following table summarizes information about options outstanding at March 31, 2016.

 

 

 

Exercise Price

  Number of options outstanding   Number of options exercisable   Weighted average remaining life   Weighted average exercise price
                                     
$ 0.12       480,000       340,000       3.59     $ 0.12