One sensor that I have not seen mentioned anywhere is GPS. The pair I tried a few weeks ago had GPS built in and it worked when glass was not connected to a phone or WiFi.
Hmmm... True. I did miss the GPS. Well i was just looking for sensors in the sense that Android defines them. GPS is in a class of its own. There is indeed mention of some sort of "Elton" GPS. Well i am on my mobile now. Travelling home after a satisfying day's work. :P Will dig up more on it once i get home...