That's why I'm asking about the door. The other tempting entry points (out of sight, relatively quiet entry, and easily accessable) are all easy and inexpensive to harden. The door is the big problem. I can't afford $250 for a captive key deadbolt let alone the $600 it would take to alarm the house. A deadbolt keyed on both sides, while affordable, is a violation of the fire code.

And yes, I do know the normal tips about landscaping, don't advertise, and know your neighbors. Their kids are constantly sending soccer balls over the fence, and until stuff turned up missing I thought it was them.