All RVs have locking doors, and those doors use keys. But here is a crucial safety fact. That key that came with your RV to lock and unlock your storage compartment doors will open many other RV storage compartments as well — and anyone with a locker key can try it in any RV lock and will likely find one or more that it opens – an easy way in for burglars. So, what to do? Gary Bunzer, the RV Doctor, shows you. The product he mentions is available on Amazon.