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Patented · Jan 2017U.S. Law Enforcement Beta

SAFER

By HeartSync LLP · San Antonio, Texas

GovTech · Public Safety · Biometric Wearables

The world's first biometric activated personal emergency alert system: patented, deployed with U.S. police and fire departments, and designed for the moment a first responder cannot call for help.

Patented

January 2017 · World's first

U.S. PD

Windcrest & San Antonio beta

24/7

Background biometric monitoring

The Challenge

Police officers, firefighters, and military personnel routinely enter situations where they cannot manually call for help: incapacitated, restrained, or fighting through a life critical event. Traditional panic buttons and radio check protocols fail exactly when they're needed most. The category needed a system that could act on behalf of a responder who cannot act for themselves.

“A few seconds can mean the difference between life and death.”Design constraint that drove the product

What We Built

SAFER (Situational Awareness to Facilitate Emergency Response) is a patented cloud platform + mobile app that pairs with a wearable biometric monitor. It runs silently in the background, watches for anomalous heart rate signatures outside preset safety thresholds, and auto transmits an emergency alert plus precise GPS location to dispatch and nearby responders: without the wearer having to touch anything.

Step 01

Wear the sensor

Officer or first responder pairs SAFER with a wearable biometric monitor (e.g., Garmin heart rate strap).

Step 02

Monitor in the background

The mobile app runs silently, streaming biometric data against the individual's preset safety thresholds.

Step 03

Detect the anomaly

Sudden spikes, drops, or sustained irregularities in heart rate outside safe bounds trigger the alert engine.

Step 04

Broadcast for help

SAFER auto transmits the alert plus precise GPS location to dispatch and nearby responders: no manual call required.

Outcome

HeartSync secured a U.S. patent for the world's first biometric activated personal emergency alert system in January 2017. SAFER is now in active beta with the Windcrest Police Department and additional San Antonio area first responder agencies. The stretch roadmap: expand the same anomaly detection engine to the general public for cardiac event prediction and vulnerable population monitoring.

Quick facts

  • Company

    HeartSync LLP · Next Gen Safer

  • HQ

    San Antonio, Texas

  • Founded

    ~2014 to 2015

  • Founders

    Sal Castillo (Managing Partner)  · Dr. Eric Bligard, MD

  • Patent granted

    January 2017

  • Category

    GovTech · Public Safety · Wearables

  • Target customers

    Police · Fire · Military

  • Tagline

    “Be Proactive, Not Reactive”

Build the next one

Same team, same standard: for your public safety or life critical product.

Schedule a call

Intellectual property

January 2017

Inventor: Sal Castillo

Patent status

Granted U.S. patent for a biometrically activated personal emergency alert system: the world's first of its kind.

What the patent covers

A cloud platform that detects biometric anomalies and dispatches automated emergency alerts on behalf of the wearer.

  • Continuous biometric monitoring via paired wearable (heart rate, etc.)
  • Anomaly detection against per user safety thresholds
  • Automated alert transmission to dispatch and nearest responders
  • Precise GPS location embedded in every alert
  • Designed for scenarios where the wearer cannot call for help

See it in action

SAFER in the field
with U.S. law enforcement.

Watch how first responders use SAFER on the ground: from the Windcrest PD beta to the founder's own walkthrough of the biometric alert engine.

YouTube

SAFER: Field Demo

How the biometric alert engine works in a real deployment.

YouTube

Founder & Product Walkthrough

The team behind SAFER on the problem, the patent, and what's next.

Windcrest PDNews 4 SAHeartSyncTrendHunter

U.S. Law Enforcement Partnerships

Beta tested with the people whose lives depend on it.

Windcrest Police Department

Texas · Primary case study

Chief Al Ballew launched a beta rollout of SAFER with officers wearing Garmin heart rate monitors. Goal: expand deployment across the department by end of 2024.

San Antonio Fire & Police

Texas · Regional beta

Additional beta testing with San Antonio area police and fire departments. Focus: cardiac event prediction and officer down detection where manual calls are impossible.

Founders

Serial entrepreneur meets clinical rigor.

SC

Sal Castillo

Managing Partner & Patent Holder

Serial entrepreneur since age 7 (TV Guide route). Owned a restaurant/bar at 22, tennis club at 33, tennis-court construction company at 35. Business Management degree, Southern Illinois University. Patented the world's first biometric-activated personal emergency alert system. Motivation: felt police and firefighters are underappreciated and set out to keep them safe.

DM

Dr. Eric Bligard, MD

Co founder

Ophthalmologist with 20+ years in the medical field. MD from Johns Hopkins School of Medicine (2005). Practice based in Fort Dodge, Iowa. Provides the clinical grounding for SAFER's biometric anomaly detection logic.

Media Coverage

Regional press. National implications.

News 4 San Antonio

Local broadcast feature · Feb 13, 2018

First Responders In Windcrest To Test New Alert System: detailed beta testing with Windcrest Police Department.

TrendHunter

Product feature · Feb 9, 2018

Heart Harnessing Safety Apps: SAFER featured as a unique safety app protecting police officers using heart rate monitoring.

ConnectPlex.ai

Company profile

Founder profile for Sal Castillo and HeartSync LLP: patent context, product roadmap, and market positioning.

Lessons for enterprise, brands, scaleups & VC backed founders

What actually made SAFER credible.

01

Patent early, patent narrow

SAFER's January 2017 patent on biometric activated personal emergency alerting created a defensible moat in a category (public safety wearables) where competitors would otherwise copy the workflow overnight.

02

Beta with the buyer, not the crowd

Partnering with the Windcrest PD chief directly (not chasing consumer downloads) built the credibility that GovTech procurement actually requires. One chief becomes a reference for the next.

03

Life critical demands trust

Founder pairing matters: a serial entrepreneur (Sal Castillo) plus a Johns Hopkins trained physician (Dr. Bligard) covers both the shipping a product story and the clinical trust story a first responder buyer needs to hear.

04

Solve for when help can't be called

The product's insight isn't 'monitor heart rate.' It's 'send help when the person can't ask for it.' That single frame narrows the design, sharpens the pitch, and makes the product impossible to confuse with a fitness tracker.

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Life critical products deserve serious engineering

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