I'll stand by my "ignorant" statement that mainstream retailers will never adopt bitcoin payments in their current form - it will need to become much more streamlined. OpenCXP is a decentralized, non-commercial proposal that address these concerns (and can still use smartphones, without requiring them).
basicly thats how I think too. The current retailers accepting BTC are small tech savy guys/girls. There is no big player accepting btcs on the market and they wont do that in the current form of transactions. Its fine to pay with btcs scanning a qr code in your app, but waiting like 10minutes for confirmations will be the pain in the ...
Its just to "difficult" and unpleasent for retailers to accept them with your smartphone. It takes around 20 seconds for me paying with my card instead of maybe 10 seconds scanning a qr code and then waiting like 10minutes for confirmations.
But at least one seemed to get my point which I wanted to state out here...