Tactile Passwords vs Shoulder Surfing

holy_calamity writes "Entering passwords using a tactile interface would remove two of the main vulnerabilities of using keyboards and alphanumeric passwords say UK researchers. They're using sequences of tactile icons on a VTPlayer tactile mouse instead. Shapes are displayed using the 16-pin tactile displays under the user's fore and middle fingers. As well as being almost impossible for anyone else to observe, tactile passwords can't be guessable in the same way as many conventional ones, they say. A video shows it all in action." Not that the video really helps explain it very well.