I frequently hear of children left in vehicles because, for whatever reason, they were forgotten.
A simple occupancy sensor could prevent this. Does anyone know of such a sensor that could be integrated into the vehicle alarm system?
It could be as simple as beeping the horn at a certain rate.
It would activate, after a predetermined delay, if the sensor detected motion after the key was removed and all doors closed.
It could be configured to be sensitive to a certain temperature range, near body temperature.
It sounds like this would be very inexpensive and simple to achieve.
I think this would prevent many child deaths as well as pet deaths. 
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