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CSR Launches SDK for Precise Indoor Location Apps

November 20, 2014  - By
SiRFusion SDK brings plug-and-play simplicity to Android app developers. Photo: CSR

SiRFusion SDK brings plug-and-play simplicity to Android app developers. Photo: CSR

CSR plc today announced the launch of its SiRFusion Software Development Kit (SDK) for Android application developers. The solution enables indoor positioning for Android developers looking to create next-generation apps.

Developers can now leverage the SiRFusion library to rapidly integrate new location-based capabilities and services such as indoor location tagging and analytics for social networking applications, indoor navigation, lone worker efficiency and safety capabilities, as well as indoor asset tracking and targeted e-commerce services.

CSR is being acquired by Qualcomm, with the transaction expected to close by the end of the summer of 2015.

Mobile applications with integrated SiRFusion can now deliver the ubiquity of outdoor navigation to indoor environments without costly surveys or infrastructure upgrades. SiRFusion combines real-time Wi-Fi signals, satellite positioning information, pedestrian dead reckoning, and the company’s cloud-based CSR Positioning Center to calculate accurate indoor location. SiRFusion technology provides the accurate indoor position fixes needed to make continuous indoor navigation a part of everyday life. The system automatically crowd-sources a venue’s indoor Wi-Fi signatures as consumers walk through the location, and it has also been architected to accommodate future proximity and location technologies such as Bluetooth Smart beacons, Wi-Fi Round Trip Time (RTT), and Indoor Messaging System (IMES).

“Offering indoor positioning accurate enough to be useful has been a challenge that the industry has been trying to solve for many years,” said Anthony Murray, Senior Vice President, Business Group at CSR. “But with consumers coming to expect anytime-anywhere positioning wherever they are, our customers have continued to express a growing interest for accurate indoor positioning without the need for additional infrastructure. With our SiRFusion Software Development Kit, we have, for the first time, made indoor location a reality for developers who want to deliver innovative location-based products and services without proprietary infrastructure.”

SiRFusion for Android can be integrated into any app running on Android version 4.4 or later. The SDK will be available for download from in Q1 2015, and will include the SiRFusion library, API descriptions, and a Developer’s Guide. CSR will demonstrate SiRFusion for Android at the Location and Context World conference December 2-3, held at the JW Marriott in San Francisco, and at Consumer Electronics Show (CES) in Las Vegas January 6-9, 2015. To schedule a private briefing and demo at either event, contact