I think rainisto teased about it already on TMO. What I understood is that the antenna currently on the devce is small and can only detect inner NFC chips embedded in Ambiance Other Halves, but I may be wrong. I asked for details to clarify and make sure I got it right, but got no answer. I was very disappointed that they did not manage to put proper NFC in the main half. The other half concept is great, but you can't count on it for basic hardware features like if people were going to go out with their phone and 3-4 OH. NFC is basic stuff, and now if I want a good HWKB OH, it needs to include NFC as well, not to mention FM radio. :/ I can't imagine having to drop NFC to have radio (and then not being able to pair my BT headphones easily), or having to drop NFC to have a keyboard. Droping the keyboard for weather sensors would be OK, as well as droping an Angry Birds OH for an extralarge battery OH. But NFC in 2013-2014 is something different, it's like discarding gyroscope from the main half and putting it in an OH. Fortunately enough, no OH is out yet, so I don't have to chose anyway. I can understand the lack of FM radio given that it is not used by a large proportion of users (yet very important to those that find a use in it), but NFC antenna too tiny for working with something else than OH? :/ Hope I got it wrong, which is totally possible. Sorry in advance, if so.