I have a suspiscion in the future most people will switch to biometric passwords (i.e retina scan, fingerprint ect) but the problem with this is , if somebody gets your bometric data it cannot be changed, where as if your password is compromised then that can very easily be changed. But the passwords will have to get increasingly longer, so people will have to make a choice between using real biometric data and risk it getting compromised or keep using long strong passwords but rely on a password manager or your browser to store it or whatever. The complextiy just keeps increasing