LISNR’s Radius® SDK is the ultrasonic standard in ultra-low power data transmission technology.
Our ultrasonic tech facilitates fast, reliable, and secure communication between devices via a speaker and/or microphone — often as a replacement to NFC, Bluetooth, QR Codes, and Wi-Fi.
Acting as a secure local proxy for data transmission, our ultrasonic technology removes the need for complex, expensive, and power-consuming wireless technologies.
LISNR Ultrasonic Software: Radius®
Radius® is a proprietary near-ultrasonic protocol that sends data-over-audio. Originally coined Smart Tones™ in 2012, our audio technology has evolved into the KAB® (Kilo Audio Bit) transmission due to our ability to transmit up to 1000 bps per channel.
Radius® protocols send data-over-audio across bandwidths (12-19 khz) that are audible or inaudible, depending on use case and distribution method, to ensure optimal performance. Additional performance enhancements include varying audio tone types, frequency channels and profiles, optimized for varying payload and environment characteristics of the actual use case.
Core Radius® Technology
LISNR’s technology is built within a C-library base conveniently allowing adaptability across the connected world ecosystem. This library allows interoperability across all software applications to device operating systems and chip-level embedded systems. Customers purchase enterprise licenses per device and usage and access library and documentation through our developer portal.
Performance Optimization
We’ve optimized our technology around 3 core product use cases of wireless data transmission. Close range data transmissions, mid range data transmissions, and long range data transmissions leveraging various tone profile options within the Radius® SDK & API.
Robustness
We certify our technology’s consistency per operating system, device, and/or environment. This has resulted in a device and operating system certification standard above 90% of current market penetration of the top global markets.
Secure
Advanced cryptography, key exchange, full-duplex, multi-channel & data packetization support, can enable LISNR® to power an extremely secure transmission method
Range
Controlled performance range from a few centimeters to many meters with best in class transmission reliability & confirmation.
Payload
We can transmit up to 1000/bits-per-second (KAB® Kilo Audio Bit) per channel. We have the ability to significantly increase the per channel throughput depending on environment and use case as well as the total transmission by using additional available channels.
Multi-Channels
To enable a number of advanced features, we have the ability to transfer multiple streams of data in a single transmission in either direction, simultaneously or any combination to maintain reliable transmission and payload.
Low-Power
LISNR® outperforms current popular short range wireless alternatives like Bluetooth, NFC or other RF-based alternatives.
Beaconing Channel
We have developed an independent channel that serves as beaconing solution within our data transmissions. This increase product performance, positioning metrics & security.
Full Duplex
Full ability to send and receive data via LISNR simultaneously
Local Tone Generation
This enables local data encoding and encoding for device-to-device communication without server connectivity.
> Learn More About Radius® Features & Benefits
Advanced Features
Real Time Transmission Optimization: Designed as a performance & security enhancer, where we can real time assess the environment & use case for signal quality and strength and change frequency, or other factors to ensure optimal throughput and performance.
Data Packetization: Advanced transmission technique where we break down the data into smaller packets. This innovation improves accuracy and robustness in challenging transmissions.
Concurrent Transmissions: Ability to accurately and securely enable multiple duplex transmissions via multiple devices in a particular zone.
Radius® Portal
24/7 access to the developer dashboard to manage and demo Radius® technology use.
SDKs & APIs: The LISNR® software development kits encapsulates the functions needed for devices to utilize our technologies on various platforms, allowing for tone modulation and demodulation.
Customer Portal Features
Analytics
View metrics related to how customers are interacting with the Radius® integrated technology.
Resources and Documentation
Support documentation and access to customer success team to aid in a successful implementation.
LISNR® Sample Apps
Use sample apps to test popular use cases via the Radius® Portal and local device-to-device transmissions.
Implementation Guide
Learn how the Radius® ultrasonic communication method can be layered into any existing software, device, service, or media. As you design the ideal experience, the end user can be the sender, receiver, or both.