John Brownlee (Cult of Mac) make s strong case for why Apple may deploy mobile payments via Blutooth Low Energy instead of NFC. (hint: it's already on your 4s) Click here to read the full article: http://www.cultofmac.com/167758/why-apples-iwallet-wont-have-anything-to-do-with-nfc
As a marketer, I don't have a strong preference for either technology. However, I do care that there is a technology that allows me to easily and wirelessly share data between 2 devices - and it would make my life easier if there was a common standard.
This reminds me of the blue-ray/HD-DVD tug-o-wars that we've experienced in the past. The complexity slowed consumer adoption and, to a certain extent, slowed creative extensions. For instance - if we were still vascillating between both technologies do you think Disney would have launched their extremely cool 2nd screen app? (BTW - if you havent seen this yet, go to: http://disneysecondscreen.go.com/LadyAndTheTramp/#slideshow. Totally worth your time!)
Bottom line - let's get this payment issue landed asap. As soon as people can pay with their phones, there will be a groundswell of adoption - and adoption leads to extension - and extension leads to creative marketing opportunities.