This is a great point, but I'd love to see a passcode system that isn't vulnarable. The "swipe puzzle" things (I'm not sure what to call them.)? I've been abl

This is a great point, but I'd love to see a passcode system that isn't vulnarable. The "swipe puzzle" things (I'm not sure what to call them.)? I've been able to see people enter them once and unlock their phone. Passcodes? Even if people used secure ones, with a combo of looking while they're entering it and the smudges it leaves, it's not that hard to get. Those are the 2 most frequent models of password input I've seen, both flawed. Any ideas for a better one?