I guess that these could be used to tell you what room you are in, but that's as far as I could see these being used.

Room ID is a very important item for sure. Thanks for taking the time to post on this topic. I will wait a little longer before I buy any more stuff.

I hope DJ will release something soon for robot mapping/navigation.

@ rgordon,

Thanks for the post. I hope Dj and Dave's ideas will come to be soon.

Ron R