"...a skin designed by Stanford engineers is 1,000 times more sensitive than human skin. Another is self-healing.

But a new skin built by researchers in South Korea may be the smartest artificial skin yet. It’s stretchy, like real skin, and it can sense pressure, temperature, and humidity. It even has a built-in heater so it feels like living tissue. The researchers tested the artificial skin on a prosthetic hand, and they hope that some day, it will interface with a patient’s nerves so amputees can feel everything the fake skin feels.

“The prosthetic hand and laminated electronic skin could encounter many complex operations such as hand shaking, keyboard tapping, ball grasping, holding a cup of hot or cold drink, touching dry or wet surfaces and human to human contact,” they write in the paper, which was published today in Nature Communications."
http://www.popsci.com/undefined/artificial-skin-can-distinguish-between-wet-and-dry-diapers