An interesting subject, . I've seen quite a lot about it in the press recently.
You ask if it will work. In the technical sense, it is already working. NFC (Near Field Communications) is in everyday use as a payment medium in Japan and Korea, and is also used for public transport in several other places. The technology itself isn't in doubt.
In fact, I received a new credit card the other day, and I see that it is NFC-enabled. (I didn't ask for it. It was just there by default.)
But whether it will work in the sense of whether people will accept it, that's more difficult. It's one thing to use an NFC credit card or season ticket, but I'm not so sure about using a mobile phone for making payments.
I suppose most people will accept it, but personally I'd worry that it's one more thing that can go wrong - one more case of relying on technology to run our lives.
Unlike most people, I don't always carry a phone around with me - nor do I want to. I'd worry that the phone might not work for some reason, or the battery might be flat. Then there's the financial implications: the need to manage the actual payments (by direct debit, or whatever); safeguarding against fraud; cancelling the service if your phone is stolen; all that sort of thing.
So, personally, I would be resistant to using it. It just makes life more complicated, for no benefit in return.
But no doubt I'm in the minority, and in a few years time it will be a normal part of our lives.
It will be interesting to hear what other forum members think.
Mike