Introducing

Pioneering Ultrasonic Authentication Technology

Empowering service providers with next-generation security and usability. Secure seamlessly with sound.

Our vision and mission

Everlink is a Cyber Security company redefining digital security by pioneering ultrasonic authentication - a new, passive and powerful factor in the fight against cyber threats.

Our mission is simple yet ambitious:
To make the digital world more secure and frictionless using everyday devices and ultra-intelligent software.

With deep expertise in the physics of ultrasound and its characteristics, we’re engineering software-based security that’s invisible, unphishable, and instantly deployable - transforming how users and systems verify trust.


Why ultrasound?

Security at the Speed of Sound

Ultrasound enables an entirely new security layer - room-bound, invisible, and inherently resistant to interception, relay and cloning.

It is not just a novel channel - it’s a high-integrity proof of presence that turns sound into trust.



Harder to Phish, Clone, or Relay
Ultrasonic keys are time-bound and physically constrained. They can’t be reused.

Frictionless for Users
No scanning, typing or tapping. Authentication occurs silently and instantly using speakers and microphones.

Deploys Anywhere, Instantly
100% software. Delivered as lightweight SDKs that integrate directly into apps, devices or platforms.

SDKs Built for Seamless Integration

Our ultrasonic authentication platform is delivered as a suite of powerful software SDKs - designed for effortless integration into existing security systems, apps and environments.


Our products

Customised SDKs
Fully adaptable to partner-specific requirements

Lightweight
Minimal compute requirement and battery impact

Deploys Anywhere, Instantly
Cross-platform - Web, Mobile, IoT, iOS or Android

Where we work

Solving Cybersecurity’s Biggest Challenges

MFA & Identity Systems

Making multi-factor authentication attack resistant and easier.

Authentication Apps

Improves app security by confirming the user is really there.

Defence & Identity

 Quickly confirms friendly identities nearby, accurately without risk of spoofing.

Network Access

Creates a security layer that only grants access when in a physical location.

Secure Entry & Locationing

Access and locate users onsite securely, passively with ultra-accuracy.

Events & Facilities

 Confirms who’s in a space in real time - for safer access, networking, or location-based features.

Contact Us

Interested in working together? We’d love to discuss opportunities to use our technology. Fill out some info and we will be in touch shortly.