Nexus PTT

Overview

CodesClue built Nexus PTT, a mission-critical push-to-talk platform for stadiums, arenas, and emergency services. Delivered end-to-end native iOS & Android apps, Node.js backend, BLE & RF hardware integration, and App Store deployment.

Mission-Critical PTT for Stadiums, Arenas & Emergency Services

CodesClue delivered a complete IoT hardware companion app platform for a US-based client operating in the sports and live events sector. The system powers push-to-talk (PTT) communication for mission-critical environments including stadiums, arenas, campus security, and emergency service teams.

From MVP through scaled production, we owned end-to-end delivery spanning native iOS and Android companion apps, a Node.js backend, hardware device integration over BLE and a proprietary wireless protocol, and full App Store / Play Store deployment with ongoing post-release support.

The platform was engineered for reliability in dense RF environments, with encrypted communication channels, token-based hardware authentication, and multi-tenant operator isolation baked in from the ground up.

Our approach

We designed every layer of the platform with one goal: zero-compromise communication when it matters most, inside a packed stadium, during an emergency response, or across a campus security operation.

• Hardware-First Architecture

  Close collaboration with the firmware team ensured the companion apps and the proprietary wireless waveform device operated in tight coordination. This hardware-first approach minimized latency in dense RF environments and ensured stable communication where off-the-shelf solutions would fail.

• Security by Design

  Encrypted communication channels and token-based device authentication with expiry and rotation policies were architectural pillars from day one not afterthoughts. The security model was designed to meet emergency services compliance requirements from the ground up, with no shortcuts taken at any layer.

• Cross-Platform Native Quality

  Separate Swift (iOS) and Kotlin/Java (Android) apps were built natively to maximize BLE reliability and platform integration fidelity. Rather than sharing a cross-platform codebase, we invested in native quality on both platforms, backed by extensive Android OEM compatibility testing before every production release.

• Scalable Multi-Tenant Backend

  The Node.js backend used versioned data schemas and isolated operator namespaces with role-based access control, allowing the platform to scale across multiple independent organizations stadiums, arenas, and emergency services without data leakage or structural rework as new clients were onboarded.

How it works

Nexus PTT follows a layered communication architecture designed for zero-compromise reliability from the hardware up to the operator dashboard.

1. Deployment begins with hardware pairing field devices connected to the companion app over BLE and authenticated via token-based handshake with the backend, establishing a secure, verified communication channel before any PTT session begins.

2. Once paired, operators initiate push-to-talk sessions over the proprietary wireless protocol, with the companion app handling RF coordination in real time. The platform manages session routing, channel encryption, and role-based access simultaneously, ensuring only authorized users communicate on authorized channels.

3. On the backend, the Node.js API processes session telemetry and operational analytics continuously, giving administrators live visibility into device status, session activity, and system health. Each operator's data remains isolated within its own namespace, with RBAC enforced at every API call.

4. Administrators manage users, roles, devices, and channels through the operator dashboard, onboarding new team members, rotating authentication tokens, and reviewing session logs all within a multi-tenant architecture that keeps each organization's data completely separate from others on the platform.