blah blah blah
it all sound like trust your money with a no name person on the street
I don't think you understand.
The card is a wallet itself, the private keys are on the card, and only on the card.
There is no trusting anyone with your funds because the only person that can access them is the owner of the card.
You could obtain a blank card, a reader, the cardlet (or the source code and compile it), install it to the card, transfer assets to the generated card address and use it. You created your own debit card.