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A Shot Fired. Law Enforcement Notified. In Under One Second.

Positive Proof gunshot detection identifies a gunshot on campus in under one second — automatically triggering alerts, lockdown protocols, and law enforcement notification before any staff member has time to make a phone call.

Positive Proof gunshot detection system — acoustic sensor array for K-12 school campuses

THE PROBLEM

Every Second Between Shot and Response Costs Lives

In an active shooter event, the response chain begins with someone hearing a shot and calling 911 — a 60 to 90 second process under ideal conditions, longer under stress. Most harm occurs in the first minutes before law enforcement arrives. Positive Proof gunshot detection removes that delay: acoustic sensors confirm a shot in under one second and automatically notify law enforcement with location.

In an active shooter event, the standard response chain begins with someone hearing a shot and deciding to call 911. That decision — recognizing what happened, finding a phone, dialing, reaching an operator, describing the situation, providing a location — takes 60 to 90 seconds under ideal conditions. In a loud school environment, under extreme stress, or in a situation where the witness cannot safely make a call, it takes longer. Or it doesn't happen at all.

Law enforcement response time is measured from the moment dispatch receives the call — not from the moment the shot was fired. Every second of delay in detection and notification extends the window of unchecked threat. Research on mass casualty events consistently shows that the majority of harm occurs within the first few minutes, before law enforcement arrives. The notification lag is where that harm accumulates.

Beyond the active threat scenario, gunshots on or near campus from external incidents require fast, accurate identification to trigger an appropriate response. Human detection is inconsistent and subject to misidentification. Acoustic gunshot detection differentiates gunshot signatures from other loud noises with high accuracy and fires a response the moment a shot is confirmed.

A shot is fired in a school building and the 90-second window to make a 911 call allows the threat to escalate unchecked

Law enforcement arrives without location data and must search the building while the threat is active

A shot near campus goes undetected for minutes because no staff member was positioned to hear it clearly

An incident occurs in an area of campus — gymnasium, parking lot, portable classroom — where staff presence is low

HOW IT WORKS

How Positive Proof Gunshot Detection Works

Acoustic detection to law enforcement notification in under one second — no human in the loop required.

  1. 1

    Shot Detected

    Acoustic sensors installed throughout the facility continuously monitor for gunshot signatures. When a shot is fired, the system identifies the acoustic pattern and confirms detection in under one second — no human trigger required.

  2. 2

    Location Pinpointed

    The system triangulates the shot location using data from multiple sensors, identifying the specific area of campus — building, wing, floor, or outdoor zone — where the shot originated.

  3. 3

    Alerts Fire

    Simultaneously: administrators receive a platform alert with location data, all staff devices receive notification, PA announcements can trigger automatically, and law enforcement receives direct notification with campus location data.

  4. 4

    Protocols Execute

    Configured automated protocols — lockdown commands, door locking, PA announcements — execute simultaneously with the alert. Law enforcement arrives with location data, not just an address.

Positive Proof gunshot detection sensor alongside Centurion Cloud incident response dashboard

CAPABILITIES

Instant Detection. Automatic Response.

Positive Proof gunshot detection combines precision acoustic sensors throughout the facility, multi-sensor triangulation that pinpoints the shot location, sub-1-second detection from shot fired to alert delivered, automatic law enforcement notification with location data (no 911 call required), automated lockdown protocols, and acoustic signature analysis that differentiates gunshots from fireworks, backfires, and construction noise.

Acoustic Sensors

Precision acoustic sensors installed throughout the facility — indoors and outdoors — monitoring continuously for gunshot signatures.

Shot Location Pinpointing

Multi-sensor triangulation identifies the specific campus zone where the shot originated — delivered with the alert.

Sub-1-Second Detection

From shot fired to alert delivered in under one second — faster than any human-initiated response chain.

Automatic Law Enforcement Notification

Direct alert to local law enforcement with location data — no 911 call required, no verbal description needed.

Automated Lockdown Protocols

Detection triggers configured automated responses — lockdown commands, door locking, PA announcements — simultaneously with alerts.

False Positive Differentiation

Acoustic signature analysis differentiates gunshots from other loud noises — fireworks, backfires, construction — minimizing false alerts.

<1

Second to Detect

From shot fired to alert delivered

0

Phone Calls Required

Law enforcement notified automatically with location data

25+

Years Deployed

In K-12 schools and facilities nationwide

SEE IT IN ACTION

See Gunshot Detection in Action

A demo takes less than 30 minutes and includes a live demonstration of acoustic detection, alert transmission, and automated response protocols.

FAQ

Common Questions About Gunshot Detection

Everything you need to know before requesting a demo.

Positive Proof gunshot detection uses acoustic signature analysis to differentiate gunshot sounds from other impulsive noises — including fireworks, backfires, slamming doors, and construction. The system analyzes multiple acoustic characteristics including frequency, duration, and decay pattern to confirm a gunshot before firing an alert. False positive rates are significantly lower than systems that trigger on sound level alone.
When a gunshot is detected, Positive Proof sends a direct alert to local law enforcement dispatch with the facility address and the specific campus zone where the shot was detected. This happens automatically — no phone call, no verbal communication, no human in the loop. Law enforcement arrives knowing the location of the incident, not just the building address.
Automated response protocols are configured during implementation based on your existing infrastructure. Common configurations include: lockdown commands to all staff devices, automated door locking when integrated with compatible access control systems, PA announcements, and simultaneous notification to all staff smartphones. Specific capabilities depend on your facility's existing systems.
Yes. Positive Proof gunshot detection sensors can be deployed in outdoor areas including parking lots, athletic fields, and campus perimeters. Outdoor sensor placement is configured during the site assessment to ensure full campus coverage. Indoor and outdoor sensors operate within the same detection and alert system.
Most deployments can be completed without major construction, using existing network infrastructure for sensor communication. The implementation team conducts a site assessment prior to installation to determine the optimal sensor placement and connectivity approach for your specific campus layout.
Yes. Federal programs including the STOP School Violence Act specifically fund physical threat detection technology including gunshot detection systems. Many districts implement gunshot detection at no district cost through grant funding. See positive-proof.com/school-safety/grants-funding/ for details on available programs and eligibility.
ShotSpotter (now SoundThinking) is designed for outdoor, city-wide deployment — primarily used by law enforcement agencies to detect gunfire on public streets. Positive Proof gunshot detection is purpose-built for campus environments: detecting shots indoors and outdoors across school buildings, gymnasiums, corridors, and parking lots, then automatically triggering school-specific response protocols — lockdown commands, staff device notification, and direct law enforcement alert with campus location data — in under one second. Where ShotSpotter routes to law enforcement dispatch for an officer to respond, Positive Proof simultaneously activates the entire campus response chain without waiting for a dispatch call.

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