4SI
0
Presence / Object 01Planned 2027
Presence Key in Brushed 316L steel
Brushed 316L steelForm view

Presence Key

One Key.
Only yours.

A personal physical trust interface. Offline by design, biometrically bound and made to be replaced if lost.

Key$0

The Key is intended to be provided free of charge. No payment is taken during this reservation.

FinishBrushed 316L steel
No payment detailsNon-bindingChange your finish later
Reservation, not an order

This free request does not create a purchase contract or guarantee production, allocation, availability or shipment. No payment details are accepted.

Reservation terms ↗
Connectivity
None
Binding
Biometric
Target life
12+ months
Replacement
Designed for it
Ivory Presence Key worn on a tailored lapel

Made to stay with you

Wear it.
Carry it.
Make it yours.

Presence Key is designed as a personal object—not another device that asks for your attention.
The true scale of Presence Key in a hand

Why it is different

Nothing to pair.
Nothing to expose.

Presence Key does not depend on Wi-Fi, Bluetooth or a mobile connection. It verifies the person holding it through physical interaction, then returns to silence.

Offline
No wireless connectivity.
Personal
Useful only with your enrolled biometrics.
Replaceable
Lost Keys can be locked and replaced free.

Planned release · 2027

Reserve interest.
Decide later.

No payment method, delivery address or purchase commitment is required today.

  1. 01

    Choose a finish

    Explore the same eight material studies shown on the 4SI home page.

  2. 02

    Submit interest

    We record one free, non-binding release reservation per person.

  3. 03

    Review the release

    If the Key becomes available, you will see the final terms before making any decision.