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Contextual, audience-verified screens for hospital lobbies · Bangkok

Attention, measured
like light.

Alumbra picks the right message for the audience at the lift — and proves it — while storing nothing.

Request a pilot See the instrument
alumbra · operator view [ replay pending first logged session ]
no session logged — nothing to show is the point

[ n=— · groups — · attn — ]

modeaudience-reactive
kill-switchvenue-held
k-anonymitybands suppressed below 5
DoHSS gateenforced at boot
frame lifetime<200 ms, RAM only
image encoderabsent — audited

This screen is everything Alumbra sees. Boxes, bands, counts — no pixels exist behind it.

Private by physics

Sees without recording.

No image encoder ships in the binary. An automated audit fails any build that adds one.

<200 ms frame lifetime

Counted in RAM, then destroyed. The frame type cannot be written to disk — by construction.

0 images stored

Nothing to leak, subpoena, or breach. The audit runs in front of you, on your device.

k<5 suppression

Small groups are never described — including in our own operator view.

<2 s decision

The screen adjusts to who is actually waiting. Gated in preflight.

The specification

What it refuses to do.

01

Identify anyone — no faces recognized, no one remembered.

02

Guess ethnicity, health, income, or emotion.

03

Keep an image. Not disabled — absent.

04

Describe fewer than five people.

05

Play an unapproved health message.

06

Override the venue. The hospital holds the switch.

Read the full specification

How it works

Sense. Decide. Prove.

01 · sense

Counts the room, keeps nothing.

Boxes and bands in RAM, <200 ms, then gone.

02 · decide

Picks the message for who is waiting.

Audience-reactive, venue-approved, in under two seconds.

03 · prove

Every play reproducible from the log.

Verified plays and attention seconds you can defend.

For hospitals

Numbers you can defend.

Verified plays, attention seconds, audience mix — every line reproducible from the event log.

Request a pilot The offer, in full