Your first question almost seems odd, but I have thought about the same scenario before, too. I have never had a trapping partner, so no one knows where most of my sets are located during the season. At times, I may have 50 or more traps out and if I were to drop dead, most of those would never be found, unless they held a critter. I suppose that my feeling on this, is that a person can't worry about everything in life---or there wouldn't be any time left to enjoy life.
Your second question:----- What's a cell phone? Is that like 2 soup cans and a string, like we use?