The most accurate and reliable real-time location system based on ultra-wideband radio technology
eliko uwb rtls


Different accuracy levels from proximity detection to within 3 cm /1 inch to optimally suit your needs.


Robust in challenging non-line-of-sight environments, indoors and outdoors.


Ultra-low latency and two-way communication for safety and other demanding applications.


Highly flexible and API friendly for configuration in various use cases.

Trusted by

The pioneering Eliko UWB RTLS has been developed in close cooperation with our customers and partner since 2014. It has been validated by hundreds of innovators worldwide in challenging environments, both indoors and outdoors. As a backbone of mission-critical applications, Eliko’s precise positioning networks provide transparency, efficiency and safety across industries worldwide.

Benefits of Eliko UWB RTLS


The UWB RTLS system by Eliko can achieve a tracking accuracy to within 3 centimetres (1 inch). To ensure predictable accuracy and precision, the system uses a combination of hardware and custom algorithms designed and optimised in-house. We design the tracking network for your accuracy needs. Most often, our customers require sub-30 cm to sub-1 metre reliable accuracy in 2D or 3D.

real-time location tracking


With the Eliko UWB RTLS you can say goodbye to positioning reliability gaps even in challenging industrial environments. More than seven years of development and piloting in real environments have already been put in to enhance the reliability, robustness, and stability of the system. Additionally, UWB itself has superior performance in multipath and reflections, penetrates obstacles and has no interference issues with other radio waves.

Tailored to your needs

The highly flexible system enables you to configure it based on your requirements. You can choose the accuracy level, refresh rate, communication mode, system setup, features, integration, support level and more to tailor it to your use case needs. The system’s state-of-the-art localisation method allows more options for advanced configurations than similar solutions on the market. We have also customised the standard hardware.


We ensure that you get a reliable positioning network with a fair value. Eliko’s system is based on a unique UWB design that enables us to optimise the anchor count. Additionally, we can combine multiple positioning methods in different places of the tracking area. As a result, with the Eliko UWB RTLS system you may need up to half the infrastructure hardware than is typical to ensure the precision you need. This also lowers the installation and maintenance costs.

How it works

Watch our introductory video about how the Eliko UWB RTLS works.

The Eliko UWB RTLS system consists of anchors, tags, a server and the ranging software. The mobile tag uses ultra-wideband radio technology to communicate with the anchors that are placed around the tracking area. The tag chooses anchors based on self-learning algorithms from which the distances are calculated. Based on the distances measured, the coordinates are calculated in the server using state-of-the-art ReCalc and self-learning algorithms.

System components

Key components of the Eliko RTLS system are anchors, tags, a server and the RTLS software. Read below about how it all comes together in a standard setup or the first development kit.

uwb rtls tags
uwb rtls server
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Anchors are reference devices that are placed around the tracking area. The anchors connect to the server through Wi-Fi or Ethernet cables.

  • Operational range up to 70 meters
  • Connectivity and power through PoE or Wifi/mains power
  • IP Class 52 and 68.
Technical Specifications


Tags are small mobile devices which enable you to track anything or anyone with an update rate from once per minute up to 100 Hz.

  • Personal tag – compact devices with battery life up to 5 months
  • Asset tag – IP67 casing and battery life up to 3 years
  • Configurable LED lights, vibration motor and external devices for alarms and notifications
Technical specifications

Eliko RTLS Ranging Software

The Eliko RTLS Ranging Software is where the data from the anchors becomes a reliable coordinate. The software enables to also build low level business rules.

  • Location calculation using advanced ML algorithms and filtering
  • Network management and configurations
  • Create zones, alarms and zone based configurations
  • Connects the Eliko RTLS with any third-party information system through API

Eliko RTLS Manager

The Eliko RTLS Manager is an easy graphical user interface to provide a clear overview of the system.

  • Enables to speed up the system setup
  • Basic configuration of anchors and tags
  • Real-time visualisation of the tracking area

Optional Add-ons

We use the following add-ons to set up the system:

  • PoE switch
  • PoE extender
  • Wi-Fi repeater
  • USB charging dock
  • Different mounting options for tags and anchors

Key features


Choose an accuracy level

You can set up the system based on your accuracy needs starting from 3 cm down to room-level proximity. Accuracy is subject to anchor count: increase or decrease the density of anchors based on your accuracy needs and environment.


Set update rates

You can set suitable update rates for your tags from once per minute up to 300Hz (Hz- times per second). The system enables you to set different update rates for standing and moving.


Create geofences

The geofence feature enables you to create digital zones around moving objects and people or static areas. So you can use the system for applications that keep employees safe by creating digital safety zones and anti-collision systems. Geofences also enable you to trigger other events, such as stopping a machine or sending a notification about an arrival at the production area.


Trigger events

You can use the tags for applications where you need to trigger real-time notifications. For example, send alarm notifications to tags to flash LED on the tag, to make the tag vibrate or to trigger external devices. With its two-way communication and absolutely lowest latency, Eliko UWB RTLS is suitable for demanding applications.


Configure through API

The system’s API friendliness makes it ideal for developers demanding flexibility. It’s a TCP / IP-based connection with API commands in NMEA standard data format, which enables to integrate it into any other system. Learn more from the API overview.



Do you have specific needs? We have customised the standard hardware, software, data output, integration and much more for various verticals with specific needs. Contact us at and let’s discuss it.

Positioning method

Eliko’s real-time location system uses an active-passive two-way ranging technique. It includes the best from both two-way ranging and widely used time-difference of arrival. Eliko’s AP-TWR outperforms standard TWR and TDoA by guaranteeing you enhanced precision, robustness and scalability.

Two-Way Ranging


Output data



Low-latency alarms and geofences for safety applications: YES, and the number of devices is unlimited.

Tag density

50x50m area; tags at 1Hz:

Up to 600 tags


Enhanced precision


Not required; enhances robustness


  • Two-anchor positioning mode: YES.
  • Passive anchors: YES.
  • Proximity: YES.
  • Max number of anchors participating in ranging: UNLIMITED.
  • Anchor handovers: YES.
  • Locally calculated coordinates (at tags): YES.

Standard Two-Way Ranging


Output data



Low-latency alarms and geofences for safety applications: YES, but the number of devices is limited.

Tag density

50x50m area; tags at 1Hz:

Up to 70 tags




Not required; enhances robustness


  • Two-anchor positioning mode: YES.
  • Passive anchors: NO.
  • Proximity: YES.
  • Each anchor decreases the number of possible tags and their update rate.
  • Anchor handovers: NO.
  • Locally calculated coordinates (at tags): YES.

Time-difference of Arrival


Output data

Time difference


Due to one way communication NO low-latency alarms and geofences for safety applications.

Tag density

50x50m; tags at 1Hz:

Up to 2000 tags




Required; decreases robustness


  • Two-anchor positioning mode: NO.
  • Passive anchors: YES.
  • Proximity: NO, only RSSI-based.
  • Unlimited number of anchors if all available anchors can synchronise
  • Anchor handovers: LIMITED to master synchronisation nodes.
  • Locally calculated coordinates: NO, requires data from the server sent back to the tag.
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“Our main challenge before using the Ultra-Wideband tracking system was tracking in darkness to project the lighting precisely on the dancer. The infrared systems for artists on stage can easily get confused when we need to track more than one target, so we were searching for something not visual or infrared. We liked that Eliko’s UWB-based RTLS had a very high refresh rate and was very accurate.”

Eric Brucker
Lead Engineer at the Curtis R. Priem Experimental Media and Performing Arts Center (EMPAC) in Troy, New York

“We studied several real-time tracking systems with different technologies and, in the end, we decided to implement the UWB RTLS from Eliko. For us, it had the best location tracking results, the easiest configuration and the best cost-efficiency ratio.”

Tiago Moura
Digitalisation Engineer at Bosch Thermotechnology

“We did tests with Eliko’s UWB RTLS and compared it with other similar solutions on the market. Based on our test results we are confident in recommending the TWR-based Eliko RTLS solution as a robust UWB solution.”

Hitesh Jani
Delivery Manager at eInfochips Inc

“After comparing the prices and solutions of various UWB RTLS providers through Decawave’s partner directory, we chose Eliko. Eliko has proved to be on top of the competition in the RTLS domain, and its technical and sales force personnel have always been available when needed.”

Gilbert Bergna

“The RFID simply gave us wrong measurements, and we wanted the best when it comes to accuracy and flexibility. Eliko’s UWB RTLS system met our technical needs and was easy to understand. We had a good support from Eliko’s team and they assist us well to set up the system, including the anchors.”

Martin de Gaillard
IT and Automation Manager for Shows at Puy du Fou

How to start

From solution consultation, network design and installation to maintenance – we support your projects from one end to the other and as much as you need. We provide global support from South and North America to Europe and Australia.

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Solution consultation

Every partnership starts with a consultation to analyse the feasibility of the technology for your specific use cases.

Technical proposal

As a next step, we provide you with recommended radio planning, keeping in mind the most optimal solution for your use case and tracking environment. The proposal includes a detailed budget estimation.

Radio network planning

The final anchor locations depend on the use case and internal restrictions. We help plan your communication network to support the tracking system and determine the final radio plan.


We guide you through the installation step by step and help configure the system remotely.

Project handover

We verify that the tracking system fits your needs and hand it over to your team.

Ready to innovate? Get in touch

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Frequently asked questions

How many anchors do I need?

The number of anchors you need to cover the tracking area heavily depends on the environment of the area, as conditions are rarely ideal. Therefore, we cannot guarantee any one-size-fits-all rule. The best way to find out the approximate number of anchors needed for your tracking area is to contact our RTLS experts and provide us with the floorplan of the area and some pictures if possible. The preliminary setup for tracking can then be drafted based on the information provided.

In general, for 2D positioning, the minimum number of anchors needed is 3. However, we recommend 4 anchors for additional reliability and optimal precision. For 3D positioning, at least 4 anchors are required. With 4 anchors you can cover about 50×50 m (~2500 m2) in ideal conditions. In a difficult non-line-of-sight (nLoS) situation more anchors are used to provide the best precision possible. If your layout does not allow a standard easy setup, contact us for guidance.

How does the UWB technology work?

Like Bluetooth and Wi-Fi, ultra-wideband (UWB) is a short-range, wireless communication protocol that operates through radio waves. But unlike its counterparts, it operates at very high frequencies — a broad spectrum of GHz frequencies — and can be used to capture highly accurate spatial and directional data.

Does Eliko RTLS work both indoors and outdoors?

Eliko RTLS, which uses ultra-wideband (UWB) radio technology, works both indoors and outdoors. Therefore, while primarily an indoor positioning system, it is also suitable for temporary outdoor applications. The Wi-Fi anchors enable the quick and convenient setup of the system without having to worry about cabling.

For permanent outdoor installations, UWB regulations should be checked, as such installations may be prohibited depending on the country or region. Learn more about the current status of regulations from UWB Worldwide regulations or contact us for in-depth information about UWB regulations.

The required level of water resistance should also be considered when planning an outdoor application.

How much does it cost?

We ensure that you get a reliable positioning network with a fair value. Eliko RTLS is based on a unique UWB design that enables us to optimise the anchor count. Additionally, we can combine multiple positioning methods in different places of the tracking area. As a result, with the Eliko UWB RTLS system you may need up to half the infrastructure hardware than is typical to ensure the precision you need. This also lowers the installation and maintenance costs. The infrastructure costs start from 2 EUR per m2, depending on the tracking environment and accuracy needs.

What is the difference between ToF and TDoA methods?

ToF – time-of-flight, sometimes called ToA – time-of-arrival.
TDoA – Time difference of arrival.

Both the ToF and TDoA methods rely on measuring the time it takes for the radio waves to travel a certain distance in the air. The difference between ToF and TDoA lies in the distances we actually measure and how we use them to calculate the position of the tag.

Read more about their pros and cons on our blog post:

ToF vs TDoA in Ultra Wideband RTLS.

Shaping the future

Eliko is shaping the future by developing next-generation positioning networks for digital solutions that depend on location data.

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