I was thinking the same thing; would make for simple retrofit to any camera currently in existence. Also, while some enterprising card supplier is at it, they

I was thinking the same thing; would make for simple retrofit to any camera currently in existence. Also, while some enterprising card supplier is at it, they might as well implement a TrueCrypt-style hidden volume solution. That, methinks, would be most useful (for a very, very small subset of their customer base). After all, as has been pointed out already - chances are the people who can inspect your camera would also have ways(tm) to make you come up with the password.