Apple's iOS 9 to ditch 4-digit passcodes, introduces 6-digit alphanumeric ones

One of the more notable ones is oriented towards security. See, up until now, iOS required you to create a 4-digit passcode, but it seems that iOS 9 will be a bit more secure, as it requires users to create a longer, 6-character passcode. This is generally making the possible passcode combinations from roughly 10,000 to approximately a million. Still, the option to use an old-school 4-digit passcode 

That's not all, mind you - the passcode can now consist of both letters and digits. This alphanumeric combination paves the way towards stronger and harder to guess passcodes. Certainly that is a pretty big leap in terms of security