Just to add to the mix,
A friend who is a garda/policeman here advised me to keep the keys out of sight but down stairs so that the determined "Rob-to-Order" thief will find them and not arrive up to your bedroom with the f**king kettle demanding the keys at 4am.
If the f**ker can get though 2 locked doors and bypass the alarm without making any noise he should be stealing diamonds not motors.
Dave N