it's interesting. As long as you have your phone password protected when turning it on or waking it up , it's actually safer than if you lose your wallet.
I think this is already in use in Japan.
It does seem like the natural progession. we've gone from a cashless society (debit cards) and are now in the infancy of a card less society.
With our phones things are heading towards an almost pocketless society. You can start your car with apps, open your house with apps, so no more keys. And to have coupons and your "cash" on your phone etc,
The Future in Now.
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