The sensing layer

Sensing without an app, wherever people move.

Keen Eye creates new data from the Bluetooth signals phones and wearables already emit: movement, density and dwell time, fed straight into Illum. Nothing to install on the devices it observes.

01 / What it is

Listens, passively.

It records each Bluetooth advertisement it hears: signal strength, name, and manufacturer or service data, placed on a floor or zone.

02 / Detect

Devices, detected.

Each observation is a structured record with signal strength, first and last seen, and its source.

03 / By zone

Structured by zone.

Records roll up by zone, so you see how each space is used. Counts are devices observed, not unique people.

04 / Flow and dwell

Flow and dwell.

Where devices move, and where they linger.

05 / Ahead

Ahead of the crowd.

At a station, the count reaches the next stop before the train does. In an arena, it reaches the gate before the surge. In a store, it reaches the aisle before the queue.

The product
01 / Feed
Keen Eye feeds Illum.
Structured geospatial data lands on the right floor and geofence, ready to use.
02 / Verify
Cross-checked, not assumed.
Keen Eye data is confirmed against cameras and other feeds before anyone acts.
Sample data

Where it works

Wherever people gather.

The same passive signals, read the same way, in every kind of space.

Transit

Counts by car and platform, handed to the next station.

Live venues

Density and flow by gate and section, as a crowd builds.

Retail

Dwell and flow by aisle and zone, store by store.

Campuses and buildings

Movement and occupancy by floor and zone.

Counts are devices observed, not unique people.

How it works
Keen Eye creates the data. Illum puts it to work.
01 · OBSERVEBluetooth signalsand network records02 · RECORDSignal strength, firstand last seen, with source03 · PLACEA zone on a registeredfloor in Illum04 · ACTGeofences, alerts andreplay on one timeline
BLUETOOTH LE · LISTENSDEVICESPhones, wearablesand beaconsCOLLECTORFixed unit with aBluetooth adapter, or phone appPARSE · PROCESSAdvertisement parser,signal processingWI-FI · AUTHORIZED NETWORKNETWORKARP, DHCP, AP data,approved probeCOLLECTORFixed unit on anauthorized network, or phone appANALYZE · CLASSIFYVendor and addressanalysis, classificationILLUMOne authorized,timed record.Floor model, zones, dwellKEEN EYE CREATES THE DATA. ILLUM PUTS IT TO WORK.
04 · DERIVEDClass and zone, with confidence and its basisDERIVED03 · BEACON IDOnly when a recognized beacon frame is advertisedBROADCAST02 · ADVERTISEMENTName, services, manufacturer or service dataBROADCAST01 · RADIOSignal strength, first and last seen, connectableMEASUREDONE BLUETOOTH OBSERVATION · A DEVICE IS AN OBSERVATION, NOT A PERSON
01 / COLLECT
Listens to Bluetooth, passively.
Records each Bluetooth advertisement it hears: signal strength, name, and manufacturer or service data.
Bluetooth LE: phones and wearables
Wi-Fi device lists, on networks you authorize
02 / MAP
Where, and for how long.
Each observation is placed on a registered floor or zone in Illum, so movement, dwell and density read by area.
Floor-level geofences in Illum
Movement and dwell over time
03 / APPLY
Act on it early.
Observations feed Illum, where geofences, alerts and replay put them to work on one timeline.
Rail, venues, retail
Feeds Illum
Counts are devices observed, not unique people.

How it works

Passing signals become planning data.

What it reads

Signal strength, type and timing, structured into a record for each zone.

What you get

How full each zone is, how long devices stay, and where they move next.

Hardware

A fixed unit or the phone app.

A fixed unit with a Bluetooth adapter, or the phone app, collects. A Wi-Fi lane reads device lists on networks you authorize. Both feed one authorized, timed record into Illum.

01

Effortless

Works from the signals devices already send, so nothing changes for the people in the space.

02

Zoned

Structured by zone, floor and time.

03

Edge-first

Processing on the unit, so only structured data travels.

With Illum

Designed to feed Illum.

Keen Eye creates the data. Illum places it on the right floor and geofence, and puts it to work.

Explore Illum

Contact

Interested in licensing, partnerships or a pilot deployment?

Tell us about the environment you need to understand. We will come back with how Illum and Keen Eye fit it.

contact@tezzeract.ai

Contact

Interested in licensing, partnerships or a pilot deployment?

Tell us about the environment you need to understand. We will come back with how Illum and Keen Eye fit it.

contact@tezzeract.ai

© 2026 Tezzeract, Inc. All rights reserved. ILLUM and KEEN EYE are trademarks of Tezzeract, Inc. Near real time means within 500 milliseconds.