Condition confirmed
The Front Door unit determines that the KeyChain remains at the entryway.
FOR SECURITY, ACCESS & CONNECTED-PROPERTY PARTNERS
LOCUE detects a physical key left in a conventional door lock, alerts immediately and creates a timestamped, camera-free signal for connected security, property and wellness platforms.
Patent-pending methodology · Working three-unit system · Designed in Canada
KeyChainMoves with the keys
Front DoorConfirms the condition
HubAlerts and connectsTHE MISSING ENTRYWAY SIGNAL
Alarm systems know when a door opens. Cameras observe activity. Smart locks manage digital access. Yet many properties still depend on conventional physical keys—and a key can remain exposed in the lock after the door is closed.
LOCUE adds a purpose-built signal for that overlooked moment without replacing the existing lock or security platform.
VALIDATED TODAY
A complete physical-to-digital response sequence, designed around one clear security condition.
The Front Door unit determines that the KeyChain remains at the entryway.
The Hub sounds its buzzer and sends an immediate mobile push notification.
If the condition remains unresolved, LOCUE sends one SMS escalation.
Key removal clears the alert and the system immediately returns to monitoring.
ONE PURPOSE-BUILT SYSTEM
SYSTEM OVERVIEW
The KeyChain, Front Door and Hub work together to identify the condition, activate a local alert and support connected escalation.
One-minute overview · Audio included
KEYCHAIN
A compact rechargeable unit that communicates securely with the Front Door device.

FRONT DOOR
Interprets the relationship between the door and KeyChain and confirms the forgotten-key condition.

HUB
Activates the buzzer, mobile push, SMS escalation and timestamped event record.
CONNECTED MOBILE EXPERIENCE
The LOCUE companion app connects customers to the complete system—showing live device and battery status, presenting the forgotten-key alert and providing control over push and SMS notifications.



Current mobile prototype validated on iPhone. Android validation is planned as LOCUE progresses toward product release.
LIVE FULL-CYCLE EVIDENCE
LOCUE does more than sound an alarm. It records the progression of an entryway event—from confirmation through notification, escalation, resolution and immediate rearming.
Relative timing shown from a completed end-to-end test. Proprietary detection logic is not displayed.
LOCUE DATA INTELLIGENCE LAYER
Each Front Door–KeyChain interaction can become a new camera-free entryway signal. With a platform partner, that signal could complement existing security, wellness and property data.
PARTNERSHIP PATHWAYS
Add a new entryway condition to existing security, automation and notification services.
Extend conventional locks and access products without requiring customers to replace the lock.
Introduce a camera-free activity and safety signal for managed residential environments.
Support opening, closing and shift-change routines with an auditable entryway event history.
ENGINEERED. INTEGRATED. REPEATEDLY TESTED.
LOCUE has progressed through multiple engineering generations into a complete system with local detection, mobile notifications, escalation, Wi-Fi configuration, battery telemetry and audit reporting.
BUILT TO COMPLEMENT—NOT REPLACE
LOCUE can operate independently today while offering a clear path toward OEM, service-provider and platform integration. The opportunity is to add forgotten-key protection and entryway intelligence to organizations that already serve the property.
Discuss a partnershipPARTNERSHIP MODELS
PATENT-PENDING
Founded and developed by Moris Chemtov, LOCUE has a Canadian patent application covering its underlying detection methodology.