
ATOM
Build once. Deploy anywhere.
Payrillium ATOM is a unified payment engine designed to support every merchant integration model, from standalone terminal to full cloud orchestration, through a single secure API.
Part of the Payrillium ecosystem.
ATOM connects natively with PROTON, CoreOS, and Mirillium, giving merchants a single platform for payments, devices, and operations across every location.
Start nowOne Core.
Multiple Deployment Models
Atom offers several flexible modes of operation, allowing merchants to adapt the payment application to their specific business needs, hardware setup, and integration requirements. All modes run within the same unified Android-based app from Payrillium, ensuring consistent security, ease of use, and access to features like PayLove for personalized customer messaging.


POS Mode
Lightweight POS with product management and real-time sales tracking built directly into the terminal.

Standalone Mode
Full native payment system with transaction lifecycle, employee management, reporting, and brand customization.

Semi-Integrated Mode
Deploy via HTTPS POST API. No proprietary SDK. Compatible with synchronous flows and webhooks.

Cloud Mode
Remote device control with no local server required. Manage and monitor from anywhere.

App-to-App Mode
Localhost HTTP integration. ATOM appears only during payment, keeping your app in full control.

PayLove Mode
Built-in thank-you messages, promotions, and branded customer experiences after the transaction.
Why Atom is different.
Not a Gateway. Not a Wrapper. A Payment Engine.
Atom serves as the versatile, all-in-one payment application developed by Payrillium that empowers merchants with exceptional flexibility and functionality in a single Android-based app. This solution stands out by eliminating the need for multiple separate tools or rigid systems, allowing businesses to handle card payments securely and efficiently across various scenarios.
Unified API Architecture
One API for every deployment environment. No code rewrites when merchants migrate between modes.
No-SDK Integration
Standards-based connectivity and APIs that work with any system, with no proprietary dependencies.
Enterprise-Grade UX
Interactive, responsive experiences that meet the expectations of modern merchants and operators.
Mirillium Compatible
Native integration with Mirillium Device Management for fleet-level control across every ATOM deployment.

Mirillium Integration
ATOM integrates natively with Mirillium, Payrillium’s enterprise device management platform. Monitor performance, deploy updates, control configurations, and orchestrate transactions across fleets in real time. This integration enables enterprise-scale control across every deployment.
- Control thousands of devices from a single cloud platform
- Push bulk updates by merchant, app, or terminal
- Monitor performance, uptime, and transaction health
- Operate edge + cloud without infrastructure complexity
Powered by Payrillium Store
Edit Terminal
Home / Terminals / Edit
Bobs Pizzeria 3
Geofence
Terminal Control and Management
Don't forget emotions.
Powered by Mirillium
Every ATOM deployment can plug into EMOTIONS, capturing real-time, on-device sentiment at the moment of payment and turning checkout into measurable customer intelligence, without compromising privacy.

Real-Time Behavioral Insight Engine
Capture live customer sentiment trends to identify friction points, optimize engagement timing, and reduce checkout abandonment.
Actionable Intelligence for Revenue Optimization
Transform emotional data into measurable operational improvements, including staff performance alignment and upsell precision.
Seamless Integration
Native interoperability with POS sessions, device management, and analytics dashboards for a unified business intelligence layer.
