these features would be great for iPads
Apple has filed a patent app that outlines some possible new features for its gadgets and computers in the future. One of the features the app takes about is a presence detector to turn the device on and off when the user walks up or walks away. That sounds pretty cool and would make things faster assuming the hardware could turn on and off quick enough.
The other and cooler thing is the face detection. The app shows a way that the device would use the front camera to see the persons face and log them into the account automatically. The sensor would look at the face color, nose and eye locations and other things and compare that against another image.
Put this tech together and you get gadgets that turn on when you walk up and has your device unlocked and ready to go with your custom account settings. That would be very nice for devices that have multiple users.