Radius 3.1 Feature Preview
A New Standard Powering Proximity Engagement is Coming. Are You Ready?
Unlock your customers’ most important micromoments securely, instantly, and without custom hardware with the latest version of the LISNR Radius ultrasonic SDK.
What’s New in Radius 3.1
Elevating the standard of ultrasonic-powered experiences
ToneLock Security
Lock engagement to only the right devices
Prevent spoofing and signal theft with three flexible ways to secure ultrasonic data transactions using unique identifiers.
AES256 Encryption
Built-in data protection
Secure every ultrasonic transmission end-to-end, even offline. Encryption is now seamless — no extra tools required.
Versatile Tone Profiles
For Distance, Speed, or Scale
With the addition of Zone266, now choose from four performance-tuned profiles to fit your flow, from fast handoffs to longer-zone use cases.
Plus Essential Capabilities
Proven, Powerful, Reliable. Radius 3.1 Builds on the Foundation That Set Us Apart.
Audibility Controls
Silent or Sonic — You Decide
Adapt volumes to your environment and overlay tones with audible sound without sacrificing performance.
Callback Control
Build smarter logic for callbacks
Customize app behavior based on tone detection events to boost responsiveness, reliability, and user experience.
Multichannel Transceiving
Ultrasonic multi-tasking, simplified
Send and receive up to three payloads simultaneously to accelerate interactions and reduce signal interference.
No Custom Hardware. No Wi-Fi. No Friction.
Ultrasonic Technology Works Everywhere Your Customers Are
Connect with the devices they already carry. No need for NFC, Bluetooth, or cameras.
The result? A smoother, more accessible experience for end customers, and a more sustainable, controllable environment for developers.
Skip the Line. (Unless You Like to Queue…)
Get Early Access to Experience Radius 3.1
Too big to miss. Stay informed. Stay connected.
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02
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03
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Book time with a LISNR subject matter expert for the ultimate fast pass to early access, use cases, and technical Q&A.