If you know me you know what a tech geek I am when traveling. iPhone, GPS, laptop, radar detection, camera, etc. I started riding with a SPOT satellite messenger last year and find it really valuable, especially if you're in an area without cell phone overage. I recently signed up for roadside assistance with it as well which is very affordable. I also have the GEOS Search and Rescue service, though I hope I never need it. But the big benefit I use is the live tracking so family and friends can follow along while we're away.
You can find my SPOT messenger page here if you'd like to follow our adventure. Look for it to start reporting when we leave Tuesday morning.