Overview

The BiLink Proximity Tracking is designed to deliver reliable room-level visibility in complex indoor environments without requiring dense gateway infrastructure, while keeping minimal infrastructure and deployment complexity. Large multi-room facilities often struggle with blind spots, leading to inconsistent tracking and reduced operational confidence

Sentrax has introduced the bidirectional BLE architecture, BiLink, which addresses these gaps by enabling accurate zone detection, seamless movement tracking, and real-time awareness across critical spaces.

At the core of this system is the BiLink BLE Relay Anchor, a battery-operated scanner and beacon, the NODIX CEN-1, designed to enhance indoor tracking performance. By extending coverage across rooms and eliminating blind spots, BiLink ensures consistent visibility, improves detection reliability, and enables seamless tracking continuity throughout the environment.

How It Works?

1

Zone Detection at the Edge

BiLink anchors like the NODIX CEN-1 are deployed across rooms and entry/exit points to detect tag presence within defined zones. This creates the first layer of reliable, room-level visibility.

2

Seamless Coverage Through Relay Communication

Once a tag is detected, nearby anchors automatically relay the signal across adjacent areas, extending BLE coverage into small rooms, blind spots, and transitional spaces without interruption

3

Continuous Signal Validation with Bidirectional BLE

As the signal moves through the network, each anchor both scans and broadcasts. This bidirectional communication continuously validates tag presence, ensuring accurate detection and smooth handover between zones.

4

Real-Time Intelligence via SOLIX Platform

All validated data is then processed by the SOLIX engine, delivering precise real-time location insights with reliable room-level accuracy and seamless zone transitions.

Key Features & Benefits

🎯

Reliable Room-Level Visibility

Consistent presence detection within rooms and clearly defined zones using calibrated BLE signal thresholds.

📡

Extended Coverage Across Spaces

Relay-based anchors enhance signal propagation and visibility across rooms, entry points, and transitional areas.

📉

Reduced Infrastructure Requirement

Lower gateway dependency through optimized anchor deployment, reducing overall infrastructure cost and complexity.

↔️

Bi-directional BLE Operation

Anchors function as both scanners and broadcasters, enabling continuous signal exchange and improved detection performance.

🔋

Battery-Powered & Flexible Deployment

Battery-operated design allows quick installation without complex wiring, supporting faster and scalable deployment.

🚪

Seamless Entry & Exit Detection

Tracking of movement between zones through continuous signal handoff and stable detection continuity.

Why BiLink Proximity Tracking?

The NODIX CEN-1 is a relay-based anchor intelligence device built to support Sentrax’s BiLink architecture, enabling improved coverage, detection consistency, and deployment efficiency in indoor tracking environments.

Advantages:

  • Expanded coverage with fewer deployed devices
  • More consistent and reliable room-level tracking
  • Detection of moving tags and assets
  • Cost-efficient infrastructure deployment
  • Elimination of indoor blind spots

By combining bidirectional BLE communication, a relay-based architecture, and data filtering & validation, BiLink delivers a smarter, more scalable, and highly efficient approach to indoor positioning and tracking.

BiLink NODIX CEN-1

For reliable room-level tracking with fewer devices and extended BLE coverage. Reduces blind spots, deployment complexity, and RTLS infrastructure costs.

Explore NODIX CEN-1 Download Brochure

Applications & Use Cases

Hospitals / Healthcare

Hospital room with large windows overlooking a city skyline, featuring an adjustable bed, wall monitor, IV pole, and bedside table with flowers.

Delivers room-level tracking for patients, staff, and equipment, eliminating hallway bleed. Improves handovers, inventory visibility, and ensures reliable entry/exit monitoring in sensitive areas.

Warehouse / Logistics

Autonomous warehouse robots transport cardboard boxes along a bright aisle between tall orange shelving.

Enables real-time zone tracking of assets and personnel with fewer gateways. Improves operational visibility, optimizes infrastructure, and enhances safety with entry/exit alerts.

Smart Buildings

Futuristic architectural model of a glassy two-story building with holographic blueprints and glowing data lines.

Provides room-level occupancy and movement insights for better space utilization. Supports efficient operations, secure access monitoring, and reduced infrastructure costs.

Hardware & Software Included

PINIX Tags

BLE smart Asset & Person tags with SOS button & temperature sensor

NODIX CEN-1

BiLink BLE Relay Anchor – Battery Operated Scanner and Beacon.

ZENIX LEN-1

BLE RSSI gateway with POE and Wi-Fi for proximity indoor positioning.

SOLIX RTLS & IoT Platform

Platform for managing, configuring and visualizing all BLE devices.

Frequently Asked Questions

What is the BiLink Proximity Tracking?
The BiLink Proximity Tracking is an advanced indoor tracking solution that uses bidirectional BLE communication to deliver reliable room-level visibility. It enables accurate zone detection, seamless movement tracking, and real-time monitoring of people and assets.
How is BiLink different from standard BLE tracking systems?
BiLink introduces bidirectional communication at the anchor level, where devices can both scan and broadcast signals. This enhances detection reliability, improves coverage across spaces, and reduces dependency on dense gateway infrastructure.
What level of accuracy does the BiLink system provide?
The system typically delivers room-level accuracy in the range of 2–4 meters, depending on deployment design and environmental conditions.
Do I need a gateway in every room?
No. BiLink is designed to minimize infrastructure requirements. With relay-based anchors, coverage can be extended across multiple rooms and transitional areas without deploying a gateway in each space.
What is the role of the NODIX CEN-1 in the BiLink system?
The NODIX CEN-1 is the first BiLink-enabled anchor device. It acts as both a scanner and broadcaster, enabling relay-based tracking, improving coverage, and ensuring consistent detection across rooms and corridors.
Is the system suitable for large or complex environments?
Yes. BiLink is specifically designed for complex indoor environments such as hospitals, industrial facilities, and large buildings where consistent room-level visibility is required.
Can BiLink be integrated with existing systems?
Yes. The system integrates seamlessly with the SOLIX RTLS platform and supports APIs and middleware for integration with third-party systems such as ERP, BMS, or healthcare platforms.
How is the system deployed?
BiLink anchors are typically battery-powered and easy to install, allowing flexible placement without complex wiring. This enables faster deployment and scalability.
What types of assets or people can be tracked?
The NODIX CEN-1 monitors the presence and movement of BLE tags, such as those attached to people, assets, or equipment, within a defined area or room. It enables visibility of BLE-enabled devices across various use cases in different industries.
Is the system scalable?
Yes. The BiLink architecture is highly scalable, allowing additional anchors and tags to be added easily as tracking requirements grow.
Does BiLink support real-time alerts?
Yes. The system can generate real-time alerts for events such as proximity breaches, asset movement, zone entry/exit, and safety-related scenarios.
Can BiLink work alongside other RTLS technologies?
Yes. BiLink can complement other technologies such as AoA-based tracking, enabling hybrid RTLS deployments for enhanced performance and flexibility.

Eliminate Blind Spots. Track with Confidence

Deploy the BiLink Proximity Tracking to achieve reliable room-level visibility without complexity, powered by intelligent relay anchors and seamless integration with SOLIX RTLS or any third-party RTLS Platform.

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