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Until Indiegogo launch · June 1, 2026
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When a child is left in a hot car, SeatSentry broadcasts a proximity alert to smartphones nearby — the people who can actually do something right now.
A car's interior can reach 125°F within 20 minutes on a 72°F day. SeatSentry detects dangerous temperature + occupancy combinations and acts fast.
Nearby phones receive the alert without a pre-installed app. No friction means faster response — every second matters in a hot car situation.
Clips to the car seat. Long battery life, no wiring. Works in any vehicle with any car seat — no installation expertise required.
Every existing hot car product — reminder apps, smart car seats, OBD alerts — notifies the driver. But the driver already left. SeatSentry is the first system designed for the people who are actually there.
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Every statistic below represents children who died despite bystanders being nearby. SeatSentry exists to close that gap.
The US averages 38+ pediatric hot car deaths annually. That number hasn't meaningfully declined in 15 years despite widespread awareness campaigns.
Car interiors can reach 125–140°F on an 87°F day within 30 minutes. Children's body temperatures rise 3–5× faster than adults. There is no safe "quick errand."
In most documented cases, bystanders were within shouting distance. They didn't know a child was inside. SeatSentry makes the invisible visible — for free to the bystander.
of hot car deaths occurred in parking lots where multiple witnesses were present but unaware a child was inside. The solution wasn't more awareness — it was a signal bystanders could act on.
Learn more about SeatSentry and the hot car safety problem: