When the driver forgets, bystanders save lives.

SeatSentry is a vehicle-mounted alert system that detects children and pets left in cars and warns the people outside who can actually help.

38+
children die in hot cars yearly
55%
were unknowingly left behind
150M
US vehicles lack detection
!
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The Problem

Every existing alert system has the same fatal flaw: it only talks to the driver.

If a parent is distracted, incapacitated, or has their phone on silent, those alerts go nowhere. The child stays in the car. The temperature keeps climbing. And the people who could help, the ones walking through the parking lot, have no idea.

87%

of victims are age 3 or younger

100%

of current alerts target the driver only

0

aftermarket products alert bystanders

Three layers of protection. The last one recruits strangers.

01

Detect

Sensors monitor the cabin for occupant presence after the engine shuts off. Detects children, infants, and pets regardless of size or position.

02

Alert the Driver

Immediate notification to the driver via audible alarm and phone alert. The first line of defense, just like existing systems.

03

Alert Bystanders

If the driver doesn't respond, SeatSentry escalates: exterior lights, loud external alarm, and a visible display warning passersby that a child or pet needs help.

Other systems hope the driver checks their phone. We don't rely on hope.

Every Other System

  • Alerts the driver via phone app
  • Requires driver to respond
  • Built into new cars only
  • Focuses on children (not pets)
  • Silent to anyone outside the car

SeatSentry

  • Alerts bystanders outside the vehicle
  • Works even if driver is unreachable
  • Aftermarket: fits any vehicle
  • Detects children and pets
  • Visible and audible to passersby

A $2.2 billion market with a blind spot.

The child presence detection market is booming, but it's all focused on new vehicles and driver alerts. The aftermarket bystander-alert space is wide open.

$2.2B
projected market by 2034
17.3%
annual growth rate
150M+
US cars without any detection

The last line of defense shouldn't be silence.

Every year, children die in parking lots where dozens of people walk past. Not because nobody cares, but because nobody knows. SeatSentry changes that. One alert to a stranger is all it takes.