Phones such as Google Tango should be able to copy physical keys. So should Microsoft Kinect but that is a bit more obvious. https://www.google.com/atap/projec

Phones such as Google Tango should be able to copy physical keys. So should Microsoft Kinect but that is a bit more obvious. https://www.google.com/atap/projecttango/#devices https://www.google.com/atap/projecttango/#devices Pin codes are also not secure, subject to capture by movie cameras Google glass and IR heat scanners picking up the key strokes. So both keys and pin codes are not secure.