Indoor Positioning with infsoft Locator Tags

infsoft Locator Tag

infsoft Locator Tags are small modular components using LoRa/BLE or Ultra-wideband (UWB) that enable tracking objects and vehicles indoors. They are also suitable for analyzing walking routes. Much like infsoft Locator Nodes, they work with server-based installations, which means that the position is determined on a server (cloud or on-premise).

infsoft Locator Tags are designed to fit our client's specific needs. This is why they can be equipped with various modules (LoRa/BLE or UWB), so they can be used in a very flexible way and can be changed according to current requirements.


Functionality of infsoft Locator Tags with LoRa/BLE Module

There are two possibilities for indoor positioning with LoRa/BLE Locator Tags: The tags can either be attached to the mobile assets or function as fixed anchors distributed evenly throughout the building.

In both cases, in addition to the LoRa/BLE tags, Bluetooth Low Energy (BLE) beacons are required for positioning. The Locator Tags transmit the location data via LoRaWAN (Long Range Wide Area Network) to the infsoft LocAware platform®. The LoRa network operates in the 868 MHz frequency band. Depending on the amount of data and the spreading factor, transmission is only possible with higher latencies (approx. 30 seconds to 5 minutes), which makes the technology unsuitable for live tracking systems. The position of the Locator Tag is calculated in the backend and provided via web services.

Functionality of infsoft Locator Tags with LoRa/BLE module

In the first scenario (mobile LoRa/BLE tags), evenly distributed beacons are necessary. Since beacons are relatively cheap (3-30 Euros) and easy to install (can be glued to walls/ceilings, battery-powered), they are especially suitable for large areas with just a few items to track. The tag itself is battery-powered or can be operated by electricity. It is adhered to the object to be tracked. The beacons installed in the building can also be used for precise indoor navigation, for example for employees and clients. In order to make use of indoor navigation, an app is necessary. Hence, this option is interesting for all application scenarios in which relatively few objects should be tracked on large areas and a beacon infrastructure already exists or indoor navigation is an interesting additional feature. The LoRa/BLE tag can optionally be equipped with a GPS module for localization in outdoor areas.

In the second scenario (fixed LoRa/BLE tags), the Locator Tags are distributed evenly throughout the premises, while the BLE beacons are attached to the assets to be tracked. Due to the low cost per beacon (and thus per asset), this method is particularly suitable for smaller areas with a high number of assets. The Locator Tags are battery-powered and can also be installed outdoors. The advantage here is that the tags do not have to be wired and there is no need for a power supply or individual connection via Ethernet or Wi-Fi. With a large number of assets, latency times are lower the more Locator Tags are installed.

Functionality of infsoft Locator Tags with UWB Module

server- and client-based indoor positioning using Ultra-wideband (UWB) Locator Tag

Thanks to their modular construction, infsoft Locator Tags can be used in different application scenarios. Besides BLE, Ultra-wideband is a possible module. UWB enables asset tracking in industrial environments with an accuracy of 10-30 cm.

The system can either be set up server-based (visualization of positioning data in the backend, no display on a client (smartphone)) or client-based (visualization of positioning data on a client (smartphone) and if necessary transmission to the backend).

Technical Features of infsoft Locator Tags

infsoft LoRa BLE Locator Tag

  • Dimensions (LxWxH): approx. 110 mm x 36 mm x 36 mm
  • Weight: 130 g
  • Bluetooth Low Energy (BLE), 2.4 GHz
  • LoRa, 868 MHz
  • infsoft Locator Tag: battery-powered: battery life approx. 1 year, or connected to electrical grid
  • Beacons: battery-powered: battery life 1-5 years, or connected to electrical grid

infsoft LoRa BLE GPS Locator Tag

  • Dimensions (LxWxH): approx. 115 mm x 65 mm x 40 mm
  • Weight: 265 g
  • Bluetooth Low Energy (BLE), 2.4 GHz
  • LoRa, 868 MHz
  • GPS/GNSS
  • infsoft Locator Tag: battery-powered: battery life approx. 1 year, or connected to electrical grid
  • Beacons: battery-powered: battery life 1-5 years, or connected to electrical grid

infsoft UWB Locator Tag

  • Dimensions (LxWxH): approx. 110 mm x 36 mm x 36 mm
  • Weight: 112 g
  • Ultra-wideband (UWB), 3.1 - 6.9 GHz
  • infsoft Locator Tag: battery-powered: battery life approx. 1 year, or connected to electrical grid




Use Cases for Indoor Positioning with infsoft Locator Tags

infsoft Locator Tags enable some exciting use cases in many different industries. Here are some examples:

In a large clinic, certain medical devices such as a mobile X-ray machine can be tracked. In addition, patients benefit from indoor navigation.

Software solution used: Indoor Tracking, Indoor Navigation
Sensors used: Bluetooth Low Energy (beacons)
Example of use: Positioning of Medical Equipment in a Clinic


In a car showroom, indoor positioning can help both sellers and customers to quickly find specific vehicles.

Software solution used: Indoor Tracking
Sensors used: Bluetooth Low Energy (beacons)
Example of use: Indoor Positioning of Cars in a Car Showroom

The Locator Tag can be supplied with power over the vehicle. The evaluation shows which areas have been cleaned how many times.

Software solution used: Indoor Tracking, Indoor Analytics
Sensors used: Bluetooth Low Energy (beacons), Ultra-wideband

The tugger train to be pursued is equipped with an infsoft Locator Tag, which passes the geo data via Bluetooth or USB interface to the driver's smartphone. There, the position can be displayed in a map and can be linked via return channel to a location-based task management.

Software solution used: Indoor Tracking, Indoor Navigation
Sensors: Ultra-wideband
Example of use: Process Optimization in Automotive Manufacturing



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