I have realised how many different fingers I use to unlock my phone and sometimes I find I can't be bothered pressing my thumb over the phone to unlock it. For it to really take off it should unlock right from sleep mode (Not go onto Siri). And people say it works great, true..sometimes. It's 50/50 if it recognizes my print and it still wants iTunes passwords for extra security all the time. It has potential but it's all very Beta siri at the moment. They could put the finger print sensor on the Ipad but it won't really make much odds. And they should have added a proper silver ring round the Space grey model to be honest. And a shortcut to the finger print sensor as shown on launch should be there like Facetime now but it's away in a menu.