Designing Secure Payment Flows for Your App

Security and simplicity can go together

Customers expect both safety and speed. If your payment flow feels clumsy, they may abandon it. If it feels unsafe, they will not return. The goal is to balance protection with a smooth experience.

Onekhusa’s gateway is built with strong security practices. Your role is to integrate it in a way that respects those controls and avoids unnecessary risks.

Practical guidelines

- Never store sensitive card or secret data in plain text.

- Use HTTPS everywhere, with modern TLS configurations.

- Validate and sanitise all inputs on both client and server.

- Implement proper error handling without leaking internal details.

- Use webhooks and signed callbacks to confirm payment status.

Design checkout screens so that customers clearly see who they are paying, the amount, and any fees before they confirm.

How Onekhusa helps

Our documentation outlines secure integration patterns, including recommended authentication methods, webhook verification, and best practices for logging and monitoring.

Visit the [Developers](/developers) page to review our guidance, and contact payments@onekhusa.com if you would like a security-focused review of your implementation.

Onekhusa — Transparent, affordable pricing for all your payment needs.