Mã QR đảo ngược

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    Còn được gọi là:
    
    negative QR
    
    reversed QR
    
  

  

  
  
A QR code with reversed colours — white modules on a dark background. While technically valid (scanners detect the contrast regardless of polarity), inverted codes have lower compatibility with some older scanning apps.


  



  

  
  
  
  

  
  
  
  

    
Thuật ngữ liên quan

    

      
      Contrast Ratio
      
      Colour QR Code
      
    

  

  
  

  
  
  

    
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