An alarm doesn't prevent kids from doing anything?
My experience differs. After a kid got burnt on my exhaust, I started activating alarm when parked in front of the house. So I can hear it, come out, check with parents it's OK and make sure they're safe when sitting, or take them for a ride in the street.
Out of curiosity, how does an alarm stop a kid burning themselves?
Years ago my girlfriend at the time had this really inquisitive kid who would always come up and point at the exhaust saying "What's that?"
Obviously my reply was "That's called an exhaust, and is VERY HOT so NEVER touch it."
You can see where this is going......she touched the can after I had just gone indoors.
Never did it again though.......but can't see how an alarm would've helped anyway?