24 Sep 2019

Bluetooth promises location-tracking lights

Lux Review
Positioning systems use Bluetooth to determine the physical location of devices and include real-time locating systems (RTLS), such as those used for asset tracking, as well as indoor positioning systems (IPS), like those for indoor wayfinding.
BLUETOOTH HAS announced a direction-finding feature that means Bluetooth-enabled lights could be used for way finding, location tracking and proximity services.

The feature allows devices to determine the direction of a Bluetooth signal, thereby enabling the development of so-called ‘proximity applications’ such as asset tracking.

The launch of Bluetooth location-tracking will rival Philip’s YellowDot programme which allows certified LED luminaires containing YellowDot drivers to be interoperable with Philips’ indoor positioning technology.

With two major players with proximity technology, it could have the positive effect of driving the concept in the lighting sector.

Bluetooth location services solutions generally fall into two categories; proximity solutions and positioning systems. 

Today, proximity solutions use Bluetooth to understand when two devices are near each other, and approximately how far apart. 

They include item finding applications such as personal property tags, as well as point-of-interest (PoI) information delivery like proximity marketing beacons. 

By including the new direction finding feature, Bluetooth proximity solutions can add device direction capability.  For example, an item-finding solution could not only let a user know when a personal property tag is nearby, but also in what direction, greatly enhancing the user experience.  

Positioning systems use Bluetooth to determine the physical location of devices and include real-time locating systems (RTLS), such as those used for asset tracking, as well as indoor positioning systems (IPS), like those for indoor wayfinding. 

Today, Bluetooth positioning systems can achieve metre-level accuracy when determining the physical location of a device.  By adding the new the direction finding feature, these positioning systems could improve their location accuracy down to the centimetre-level.

‘Since the introduction of Bluetooth Low Energy in 2010, developers have been able to leverage Bluetooth to create powerful, low cost location services solutions for a variety of applications spanning across consumer, retail, healthcare, public venues, and manufacturing environments,’ said Andrew Zignani, senior analyst, ABI Research.

‘The new direction finding feature can help Bluetooth better address the varied and evolving needs of the location industry, enabling more flexible, scalable and future proof deployments that will further accelerate the adoption of Bluetooth for location services in existing markets, while unlocking additional business opportunities for new applications and use cases.’

‘Bluetooth has emerged as the technology of choice for location services, allowing companies to build robust, reliable solutions for the wide variety of organisations that require accurate location to power their businesses,’ Fabio Belloni, chief customer officer and co-founder of Quuppa, told the press. ‘Today’s introduction of a standard approach to Bluetooth direction finding promises to open up even more opportunities for us, our partners, and our customers.’

‘Location services is one of the fastest growing solution areas for Bluetooth technology, and is forecasted to reach over 400 million products per year by 2022,’ Bluetooth Special Interest Group executive director Mark Powell, told Lux. ‘This is great traction and the Bluetooth community continues to seek ways to further grow this market with technology enhancements that better address market needs, demonstrating the community’s commitment to driving innovation and enriching the technology experience of users worldwide.”

The direction finding feature is included in version 5.1 of the Bluetooth Core Specification, which is available to developers.

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