Interesting article on the Google Wallet two first year learnings, including assessment on what went wrong from former product lead for the Google Wallet service. Interestingly summarized into one point of failure – the carriers.
Read the article here.
As said in the article and that I’ve commented before, it’s hard to implement a payment service and especially adding new players to share the transaction and adding hardware dependencies (like special SIMs and working on a selection of NFC mobiles). Doing both and at the same time is of course a big challenge…even for Google.