Well you made me realise its not solving the wallet problem, as you will still need a card as many outlets won't support the transaction type. There are plenty of other reasons to carrying a wallet, security cards for example, loyalty cards.

So its definitly not solving the wallet issue.

I won't be buying into it as I leave my phone all over the place. Plus I travel abroad a lot and already deal with way more fraud that I'd like anyway. Total pain dealing with banks to get all the fraudulent transactions reversed after getting home :/ anything that automates the process for me also automates it for the bad guys, so I'll be a late adopter thats for sure.