As of this moment, security on the Apple iPhone and iPad involves punching in 4 numbers and that’s it. Not the strongest mode of security I’ve ever seen, but hell, it sure beats entering a CAPTCHA every time you power-up your phone. Well, get ready for something completely different in the next iPhone, as the rumored 4G may have a cardiac sensor that detects the owner’s heartbeat, which it uses to identity the user, locking out all others.
