• QR Code (Image) Generator/Encoder
• QR Code (Image) Scanner/Decoder
• Retrieve One-Time Password in Real-Time

• QR code content：

  Inspired from Nuintun and Russau! Developed by Yuthan K.

  Error correction level： Level L (7%) Level M (15%) Level Q (25%) Level H (30%) Support ECI： Encoding： Auto Byte Alphanumeric Numeric Kanji QR image size： White background size：

  Generate

• Choose the QR code picture：

  Decode

  The decoded value is：
  
  

• Secret (base32)

  4CMGD6DHKGLORNS5

  
  Updating in

  
  One-time Password

  
  
  
  Secret (hex)

  
  Unix epoch div 30 (padded hex)

  
  HMAC(secret, time)

  
  

Author: Yuthan K
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