Built on φ

Inaudible signals.
Infinite commerce.

Winphinite turns any speaker into a transmitter and any microphone into a receiver. Data travels through sound nobody hears — no network, no pairing, no hardware to install.

Request access How it works

How it works

Three steps, no infrastructure.

The whole chain runs on hardware your customers already carry and equipment you already own.

Emit

A speaker plays a signal pitched above the range of human hearing. A till, a turnstile, a TV spot, a phone — anything with a speaker can send.

Carry

The signal moves through the air like any other sound. It needs no internet, no Bluetooth pairing, no NFC chip and no line of sight.

Act

A nearby microphone decodes it on the device itself, offline, and hands your app a payload it can act on immediately.

Applications

One signal, many businesses.

Anywhere presence, proximity or identity matters — and the network cannot be relied on.

Cashless payments

Payment between a till and a phone, with nothing to tap and nothing to pair.

Ticketing

Validate entry from a screen or a speaker, including underground where signal drops.

Security

Confirm a device is physically in the room before it is granted access.

Authentication

A second factor that proves presence, not just possession of a phone.

Offline

Everything keeps working with no internet, no Bluetooth and no NFC.

Proof of presence

Attendance and delivery confirmation that cannot be faked from somewhere else.

Advertising

A television or radio spot hands the viewer's phone a link, silently.

Loyalty

Points and offers trigger themselves the moment a customer walks in.

Measurement

Know which screen, which room and which moment, without GPS.

Indoor positioning

Room-level location in the places GPS and beacons never reached.

The signal carries whatever payload you define. If your business runs on knowing who is there, it runs on this.

First product

PHI ONE

The first Winphinite engine: a drop-in SDK that encodes and decodes inaudible signals on the devices you already ship to.

Get the SDK

Hardware: Any speaker, any microphone. Nothing to install, nothing to retrofit.
Connectivity: Decoding runs on the device. No internet, no pairing, no back-end round trip.
Platforms: iOS, Android, web and embedded targets from one integration.
Audibility: Signals sit above the speech band, outside what people notice.
Payload: You define what the signal carries — an identifier, a token, a whole instruction.
Foundation: Frequency spacing and framing derived from φ, for separation without collision.

Early access

Tell us what you want it to trigger.

We are onboarding a first group of partners in payments, transport and retail media. Bring us the moment you want to capture.

Inaudible signals.Infinite commerce.