Use a cash card periodically instead. Crooks don't like light and sound or anything that will draw attention to their activities. Storage compartments are vulnerable and we must all realize that there are just a few master keys that open almost every RV storage bay lock used today. In Southern California, a favorite target of thieves is the auxilliary generator while the RV is parked at an all day amusment facility parking lot. They come into the parking lot with a van, paying like all of us do , and then find the easiest generators to remove.
Generators bring a good price in Mexico, and can be removed from most rigs in a matter of minutes.
They weigh about 300 lbs., so it is possible with a portable transmission jake to load one into the thieves' van in a matter of a few minutes. Mall parking lots are another favorite place for burglaries to take place. In most mall parking lots, we tend to park away from traffic, so as to be out of the way. That's just the place the thief wants us to park. Storing the RV, even on our own lot, makes it vulnerable to possible break-ins.