MIT’s Media Lab has a prototype of a wearable 6th sense - pretty damn cool – initially seems to get you thinking “what is the point?”; but sit it out and it will all make sense! Of course the whole “6th sense” is glamorizing it a bit, it is more JIT info.
I wonder what happens if your phone is not in a 3G/HSDPA coverage and what the battery drain on the phone is with the data connection always on and how big is your phone bill (most people don’t have unlimited data options on their mobile).