Seriously tho if you really trust that all smartphone manufactures are not hiding packets of data that send statistical usage and data behind your back(without your consent) then please continue to use the smartphones to trust your money with it.
"Trust but Verify" is my motto.
Here's a scenario for you. I receive a paper check from a customer for $1,000 for services rendered. I take a picture of said check with my smartphone, and it deposits that money into my bank account. After ACH clearing that night, the next day I walk into my local bank and withdraw said $1,000.
This is a service supplied by several large US banks. Personally my tin foil hat is just as large as yours appears to be and won't let me utilize this service, but vast numbers of the public do.
The money/time/energy would be better spent integrating this concept into NFC/Bluetooth smartphone transactions. See how many smartphones around the world are already being used for micropayments. If you could one-up them by adding paypal, dwolla, btc, etc, you might have a viable business model.
Hence my
opinion that the time/energy/money being spent here would be better spent making the software and then hardening software/infrastructure etc. If Chase Bank can [pay some developers to] do it, surely some group here in Bitcoinia (word?) can do it as well or better.