All work

Lavei Mais

A kiosk app for Sunmi P2-B terminals. The flow connects in-person payment, transaction confirmation and automatic machine unlock, with an interface built for continuous use at the physical point.

PaymentsSelf-service laundry · in-person payments

How the system works

  1. Customer picks a machine
  2. Card or PIX on Stone
  3. Payment confirmed
  4. Machine unlocks

The problem

A self-service laundry needed to run without an operator: the customer arrives, pays, and the machine unlocks. Without that, every payment depended on someone on site to check and start the equipment.

What I built

An Android kiosk app for Sunmi P2-B terminals, integrated with the Stone SDK. The flow summarizes the machine and amount, takes card or PIX on the terminal itself, confirms the transaction and unlocks the equipment automatically.

Result

The store runs without an attendant. Payment, confirmation and unlock became a single flow on the terminal, with failure handling designed for continuous use at the physical point.

The project

Android POS app that takes Stone payments and automatically unlocks laundry machines.

Highlights

  • Stone SDK integration
  • Sunmi POS operation
  • Automatic unlock
  • Resilient kiosk flow

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