How safe is the wallet if or when released? Obviously, using this wallet would mean trusting the wallet's developer or creator. And, most importantly, being convinced that such wallets are at no risk of being accessed via a backdoor system.

I love the idea of engraving both the public and private keys on the card, protected by a passphrase-protected Bitcoin private key. Is it really secure? I mean is there any way to reverse engineer the encoding in any way? Sorry for asking. Just paranoid about these things. I always believe that a private key, encrypted or not and in whichever format it is generated, is only secure if it is known to and controlled by the wallet's owner and nobody else.

If it is really secure and impenetrable, I would love to have one of these cards and will be happy to support the Kickstarter. I do want to see the earlier question answered: what if the project fails to achieve full funding? Would you still move forward with it?