BMW car key prototype unlocks hotel rooms train seats

Researchers at BMW have taken the wireless car key to the next level by embedding "near field communications" and letting it be the key to many things (maybe even life?).

Source:
http://www.networkworld.com/video/?bcpid=60965047001&bckey=AQ~~,AAAAAEofxgI~,mZ1_-nOy0sgLgPv5TJ-7jZWKlVWinpW5&bclid=1363192037&bctid=772570369001