Maybe the theives are on the lookout for anyone entering their passcode into the phone in public. If they manage to see the passcode or swipe pattern, then the

Maybe the theives are on the lookout for anyone entering their passcode into the phone in public. If they manage to see the passcode or swipe pattern, then they'll steal the phone. I've never seen anyone take steps to prevent others from seeing their passcode or swipe pattern in public.