How to lock your car and why

I locked my car.  As I walked away I heard my car door unlock.  I went back and
locked my car again three times. Each time, as soon as I started to walk away, I
would hear it unlock again!!  Naturally alarmed, I looked around and there were
two guys sitting in a car in the fire lane next to the store. They were
obviously watching me intently, and there was no doubt they were somehow
involved in this very weird situation .  I quickly chucked the errand I was on,
jumped in my car and sped away..  I went straight t o the police station, told
them what had happened, and found out I was part of a new, and very successful,
scheme being used to gain entry into cars.  Two weeks later, my friend's son had
a similar happening....

While traveling, my friend's son stopped at a roadside rest to use the bathroom.
  When he came out to his car less than 4-5 minutes later, someone had gotten
into his car and stolen his cell phone, laptop computer, GPS navigator,
briefcase..... you name it.  He called the police and since there were no signs
of his car being broken into, the police told him he had been a victim of the
latest robbery tactic -- there is a device that robbers are using now to clone
your security code when you lock your doors on your car using your key-chain
locking device..

They sit a distance away and watch for their next victim. They know you are
going inside of the store, restaurant, or bathroom and that they now have a few
minutes to steal and run. The police officer said to manually lock your car
door-by hitting the lock button inside the car -- that way if there is someone
sitting in a parking lot watching for their next victim, it will not be you.

When you hit the lock button on your car upon exiting, it does not send the
security code, but if you walk away and use the door lock on your key chain, it
sends the code through the airwaves where it can be instantly stolen.
This is very real.

Be wisely aware of what you just read and please pass this note on.  Look how
many times we all lock our doors with our remote just to be sure we remembered
to lock them -- and bingo, someone has our code...and whatever was in our car.