BlindPay combines a blind-friendly voice interface with a small hardware bridge for UPI experiments. The browser experience handles speech and feedback; an ESP32 and SIM800 module explore how the same flow might work over a cellular connection.
One hardware project
The prototype is intentionally small: microphone in, clear voice feedback out, and a constrained route toward QR or USSD payment states. The point is to test the interaction and the reliability of the bridge, not to hide complexity behind a shiny demo.
Safety first
Payment actions remain explicit. The interface can prepare the next step, while the person stays in control of confirmation.