I heard someone mention a GPS chip (we were talking about hunting elk in wyoming) that shows public/private land boundaries.

Is there such a thing? Anyone have info on this? this would come in handy for some of the hunts I have planned in which private land boundries may be hard to recognize. I dont want any ranchers angry at my group. This could alleviate any issues like that if something like this chip exists.

I do most of my scouting / planning on google earth, and use Forest Service and BLM maps to determine boundries.

Hope someone has some info on this topic.