Lohnexperten Rhein was processing thousands of salary correction requests across Germany — relying on manual email workflows and offline spreadsheets.

This approach created operational bottlenecks, security concerns, and inconsistencies in data handling.

The challenge:

• Digitize and secure the submission process.
  
• Maintain compliance with data protection and privacy standards (GDPR).
  
• Ensure usability for non-technical users receiving access via post.
  
• Provide administrators with real-time visibility and exportable insights.
• The solution needed to feel effortless for users — and completely controlled for administrators.

• Simplify user access with a one-scan QR-code login system.
  
• Guarantee security and privacy through encrypted credentials and limited login attempts.
  
• Automate form submissions with email confirmations and session management.
  
• Provide admin visibility into submissions, analytics, and export-ready data.
  
• Support high-volume transactions, ensuring stability during periods of intense payout processing.

Discovery & Research

No-Code District worked with the client’s payroll and compliance teams to map the entire data flow — from QR issuance to admin reporting — ensuring both security and regulatory alignment.

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Design & Development

The final product consisted of a web-based portal where users securely authenticated and completed their submission in minutes.

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User Flow

1. Letter Dispatch: Each user received a physical letter with a unique code and QR link.
   
2. QR Login: Scanning the code led to a secure web portal.
   
3. Authentication: The user entered their unique code + date of birth (max three attempts).
   
4. Form Submission: Completed a tailored form capturing personal and payroll data.
   
5. Confirmation: User received a confirmation email and was automatically logged out.
   

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Admin Interface

• Dashboard Overview: Visual metrics of total submissions, login rates, and activity trends.
  
• Analytics Section: Charts tracking daily logins, failed attempts, and submission timelines.
  
• Data Export: One-click CSV export for integration with accounting and ERP systems.
  
• Security Layer: Role-based access and tokenized admin sessions.

• QR-Code Login System: Eliminated password creation; users accessed via unique, single-use identifiers.
  
• Encrypted Data Flow: All data encrypted in transit and stored with unique identifiers.
  
• Limited Login Attempts: Maximum of three tries to prevent unauthorized access.
  
• Automated Session Logout: Ensures no data remains accessible post-submission.
  
• Dynamic Admin Dashboard: Real-time analytics and reporting tools.
  
• Data Export: Simplified CSV generation for auditing and payout verification.

The Lohnexperten Rhein QR platform became a key infrastructure for payroll reconciliation and correction campaigns across the region — securely processing over €10 million in payouts.

Operational Impact

• 90% reduction in manual data entry.
  
• Submissions validated and processed within hours instead of days.
  
• Admin team gained full visibility and exportable audit data.

User Impact

• Over 98% successful login rate via QR-code access.
  
• No data breaches or unauthorized access detected.
  
• Frictionless experience for users receiving letters and accessing the portal.

Strategic Impact

• Positioned Lohnexperten Rhein as a digital-first payroll leader.‍
• Laid the foundation for future expansion into employee self-service portals and automated payout systems.