How SoundPe Extends UPI
See how SoundPe converts standard UPI QR payment data into audio signals, enabling the same trusted payment experience on camera-less devices.
Live Demo
Click to start the SoundPe process demo
Data Input
User enters or scans their UPI details like ID, amount, or merchant name or simply uploads a QR code.
Technical Details:
UPI information is captured via form input, QR scanning, or image parsing.
Smart Encoding
The collected data is intelligently encoded into a compact, optimized format ready for transmission.
Technical Details:
Token-based replacements and compression techniques reduce payload size.
Audio Emission
The encoded data is converted into a stream of sound and played as a brief, structured audio signal.
Technical Details:
Web Audio API generates tone sequences mapped to data slices.
Signal Capture
A nearby device listens to the audio and deciphers the transmitted signal securely and accurately.
Technical Details:
Real-time signal processing and pattern recognition from microphone input.
Instant Payment
Once decoded, the UPI data is opened or processed for fast and seamless digital payment.
Technical Details:
Validates and routes reconstructed UPI string to appropriate payment handler.
Technical Specifications
Security Features
No Data Retention
The system performs stateless transmission—no personal or financial data is stored after use.
Replay Protection
Redundant transmissions are filtered and uniquely verified to avoid double processing.
Secure by Design
The protocol avoids external APIs, cloud calls, or backend dependencies—reducing attack surface.
Ready to Experience SoundPe?
Try our AQR generator and experience the future of payments firsthand.