4SIDesign preview

Presence applications

Different industries.
One human layer.

The door. The account. The decision. Wherever a service needs to establish that a person is physically involved, we see a place for Presence.

A person presenting a small Presence Key at a data centre entrance.
A person using a Presence Key with a purchase approval request on a phone.

Start with
the moment.

Which person needs to be present before this action proceeds?

Presence reader at the entrance to a research laboratory.

Physical access

The right person.
At the right entrance.

A technician arrives. A shift begins. A visitor reaches a restricted area. Connect permission to the person at that entrance, at that time.

Presence is being developed to add a personal Key check to the entry request. Your access controller applies the permission and controls the lock.

Offices · Laboratories · Homes · Critical facilities

What we would validate

Agree the controller interface, permission lifetime and revocation. Test the real entrance, throughput, accessibility, outages and independent emergency escape.

See the architecture
Talk to sales

These are intended applications. Physical verification and partner integration are validated for the specific workflow before deployment.

Every industry.
Its own starting point.

From a hospital entrance to a financial approval. Explore the people, decisions and operating responsibilities in your world.

Explore all industries

For product teams and technology providers

Bring Presence
into your product.

Your application. Your device. Your customer experience. Explore how a Presence check can become part of what you already deliver.

Your productPresence checkYour decision
Build with Presence

Presence for your organisation

Start with one.
Build from what works.

Tell us where Presence could make a difference. Discuss fit, integration, availability and the commercial path—then scope a first evaluation around your users and systems.

Talk to sales

A useful evaluation answers:

  • What evidence does the process need?
  • Can people complete it clearly and reliably?
  • What happens on refusal, failure or loss of access?
  • Does the result justify operating it at scale?
Safety, privacy and regional requirements

Appearance

Choose how 4SI looks on this device.

Color theme

Automatic follows your device’s light and dark settings.

4SI

Open Presence

Presence PersonalYour Keys and access.Presence EnterpriseManage your organisation.

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Presence Key
Brushed 316L steelPlanned for 2027 · Free · Non-binding

All of 4SI

Presence
For institutions
Research
Company & Fellowship
Legal & transparency
For Safety Group Inc.

11201 North Tatum Boulevard
Suite 300 PMB #365
Phoenix, AZ 85028, United States

Contact 4SILegal notice
Institutional applications opened