|Read my lips. We might log on to future computers simply by having them
watch our mouths as we speak, because the way our lips move can identify
us, akin to a fingerprint.
Ahmad Hassanat at the University of Mu'tah in Jordan trained software to
look for patterns of lip and mouth movements associated with different
words as people spoke to a camera – how much of the teeth were showing
in any given video frame, for example. From mouth movements alone, the
system correctly identified the words being said nearly 80% of the time.
Hassanat also found that every person moved their lips a little
differently when they spoke. While this meant the lip-reading accuracy
level is too low to be useful yet, it could mean that one day a 'visual
password' could work as a form of biometric security.
Even the best actor would find it impossible to exactly duplicate
someone else's lip movements, Hassanat claims.