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Toyota is putting millimeter-wave in its minivans to help make sure you don’t leave your kid behind.
New Siennas are being equipped with the radar sensor to scan for movement after you’ve left the car. If it detects motion, it will flash the hazards and sound the horn to get your attention.
As mmWave can detect motion as small as chest rise from breathing, this should work even if the child is asleep.
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