I get it. Having a recognizeable case (that says hey, I care about my security/anonymity) might not be very covert. I stand by the effort being put forth here. This is low level reverse engineering, expansion, etc.. all through SIM card, etc... to anyone already putting forward suggestions to the design, you should kinda STFU. Horse before the cart. First lets make this awesome idea come to life, see how it's limited by materialism and then hone it from there.