Put your car key beside your bed every nights.

Tell  your  spouse, your children, your neighbours, your  parent,  everyone you run  across. Put your car keys beside your bed at   night.

If you  hear a noise outside your home or someone trying  to get in your house, just press the panic  button for your car. The alarm will be set   off, and the horn will continue to sound  until either you turn it off or the car battery  dies.

This tip  came from a neighbor-hood watch coordinator.  Next time you come home for the night and you  start to put your keys away, think of  this: It's a security alarm system that you  probably already have and requires no  installation Test it. It will go off from   most everywhere inside your house and will keep honking until your battery runs down or  until  you reset it with the button on the  key fob  chain.

It works  if you park in your driveway or garage. If your  car alarm goes off when someone is trying   to break into your house, odds are the  burglar/rapist won't stick   around.

After a  few seconds all the neighbour will be looking  out their windows to see who is out there and  sure enough the criminal won't want   that.

And  remember to carry your keys while walking to  your car in a parking lot. The alarm can work  the same way there. This is something that  should really be shared with everyone. Maybe it   could save a life or a sexual abuse   crime.

Would  also be useful for any emergency, such as a  heart attack, where you can't reach a phone. My  Mom has suggested to my Dad that he carry his  car keys with him in case he falls outside and  she doesn't hear him. He can activate the car  alarm and then she'll know there's a   problem.