What is BankID? Building QR Code Login & Windows App Integration

What is BankID? 

BankID is a widely adopted electronic identification (eID) solution that allows users to authenticate themselves online or sign documents securely. It is issued by banks and is legally recognized, making it a trusted digital identity tool for millions of users. 

With BankID, users can securely access services without needing passwords or physical tokens. It leverages strong encryption and multi-factor authentication, ensuring that both user identity and transactions are protected.

How Does BankID Work? 

At its core, BankID acts as a digital passport. When a user wants to log into a service or sign a document, BankID verifies their identity using a secure app or software provided by their bank. 

Typically, the user: 

• Initiates the login on the service provider’s platform, 

• Receives a prompt to confirm their identity via their BankID app or software, 

• Authenticates using a personal PIN, biometric data (fingerprint or face recognition), or other secure methods,

• Once verified, the system grants access or completes the transaction. 

This process replaces traditional username and password logins with a more secure and user-friendly alternative.

Our BankID Integration: QR Code and Windows Application Login 

To improve user convenience and security, we developed a flexible BankID login system that supports both QR code scanning and Windows application-based authentication. 

QR Code Login 

• When a user chooses to log in via QR code, our system generates a unique, time-limited QR code on the login page
  

• The user scans this QR code with their BankID mobile app
  

• The BankID app prompts the user to verify their identity (PIN or biometrics)
  

• After successful authentication, the BankID system notifies our backend, which grants access immediately. 

QR code login is especially popular on desktops or shared devices, where users can quickly authenticate using their mobile phone without typing passwords.

Windows Application Login 

• For users on Windows devices, we developed a dedicated BankID authentication module integrated directly into our Windows application. 

• This module communicates securely with BankID’s APIs to initiate the login flow. 

• Users enter their PIN or use biometric authentication through the BankID software installed on their device. 
• The application confirms the authentication and logs the user in seamlessly. 

This approach provides a native, smooth login experience that feels familiar to Windows users and avoids switching devices. 

Benefits of Our BankID Login Solutions 

• Enhanced Security: Strong authentication with PINs and biometrics reduces the risk of unauthorized access. 
• User Convenience: Multiple login options cater to different user preferences and device types. 
• Fast and Seamless: Instant login via QR codes or native Windows app avoids password hassles. 
• Compliance: Using BankID ensures compliance with national regulations on digital identity and security.
• Future-proof: Our modular integration allows us to quickly add support for new BankID features or platforms.