Researchers from USC Viterbi School of Engineering started an offshoot company in 2008 called SynTouch.
They are now making a sensor called BioTac that puts feeling into a prosthetic finger. BioTac is able to identify randomly selected materials with a 95% accuracy rate, which is better than us humans. This high accuracy rate is due to a “fingerprint” on the outside that helps the sensor identify vibrations from different materials.
The BioTac is also filled withed a conductive liquid that aids in detecting objects.
Click through for a video about BioTac.