I would actually prefer no physical wallet if it were possible. The idea that your driver license, credit cards, debit (figuring out how to make this work with ATMs too, and any other physical card all digital and works is in fact the holy grail.

If like Passbook, I could store my cards and select which one digitally and easily transact everywhere the way Stabucks does it or how the Apple Pay demo during the keynote does it, that would be amazing. I would prefer just having to carry my phone and nothing else (replace my keys while we're at it).

The problem is no matter how awesome this is, it won't happen unless this universal system is in place everywhere. Currently not every store or merchant accepts such a way to pay or identify yourself (in the case of IDs or even other type of cards). And much like how there are still places that are cash only, the adoption for this is likely going to take a long time, if ever, to truly remove the feeling that I can finally not carry a wallet at all.

It is a problem (in the first world sense)in my opinion contrary to the article, just one that lacks a universal solution due to it not being widely adopted yet.