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Revenue - Schedule of revenue (Details) - CAD ($)
 9 Months Ended 12 Months Ended
Sep. 30, 2020
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2019
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Revenue $ 861,917 $ 721,519 $ 1,275,804 $ 509,148
Digitization [Member]        
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Revenue 835,097 354,620 1,255,982  
Non-Lethal [Member]        
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Revenue 0 330,658 0  
Training and services [Member]        
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Revenue 0 34,590 0  
Systems [Member]        
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Revenue 835,097     472,749
Other [Member]        
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Revenue 26,820 1,651 19,822 $ 36,399
United States [Member]        
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Revenue 835,097 389,210 1,238,063  
Canada [Member]        
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Revenue 26,820 332,309 37,741  
Products and services transferred over time [Member]        
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Revenue 835,097 389,210 1,238,063  
Products transferred at a point in time [Member]        
Disclosure of disaggregation of revenue from contracts with customers [line items]        
Revenue $ 26,820 $ 332,309 $ 37,741