I kind of like the "picture password" option. It shows innovation in an area that badly needs some (authentication) and should be easier to remember for many people than a PIN code, I think.
Picture passwords would be harder to write down, but I'm not yet sure whether that's a negative or a positive.
This problem is solved by simply keeping documents on a server somewhere (I hesitate to say 'the cloud', but that's the marketing term for it) instead of only on the device.
Picture passwords would be harder to write down, but I'm not yet sure whether that's a negative or a positive.