A man moves his finger toward the finger of humanoid robot iCub during the 2014 IEEE-RAS International Conference on Humanoid Robots in Madrid, November 18, 2014. (Photo by Gerard Julien/AFP Photo)

SoftBank Corp's human-like robot named “Pepper” gives a coffee cup to a TV personality Kyoko Uchida as they introduce Nestle's coffee machines during a promotion event at an electronics shop in Tokyo December 1, 2014. Nestle SA started to use robots to help sell its coffee makers at electronics stores across Japan, becoming the first corporate customer for the chatty, bug-eyed androids unveiled in June by tech conglomerate SoftBank Corp. The waist-high robot, developed by a French company and manufactured in Taiwan, was touted by Japan's SoftBank as capable of learning and expressing human emotions, and of serving as a companion or guide in a country that faces chronic labour shortages. (Photo by Issei Kato/Reuters)

In this October 24, 2014 photo, researchers Randall Briggs, left, and Will Bosworth monitor a robotic cheetah during a test run on an athletic field at the Massachusetts Institute of Technology in Cambridge, Mass. MIT scientists said the robot, modeled after the fastest land animal, may have real-world applications, including for prosthetic legs. (Photo by Charles Krupa/AP Photo)

A woman holds a BionicANT (according to manufacturer, “ANT” stands both for the natural role model and for Autonomous Networking Technologies) developed by German FESTO company, at the world's largest industrial technology fair, the Hannover Messe in Hanover, April 12, 2015. (Photo by Wolfgang Rattay/Reuters)

A “Nao” humanoid robot, by Aldebaran Robotics that offers basic service information, moves during a presentation at a branch of the Bank of Tokyo-Mitsubishi UFJ (MUFG) in Tokyo April 13, 2015. Upon request by a customer, the robot offers basic information about banking services in Japanese, English and Chinese at a MUFG branch in Tokyo, a spokesperson of the bank said. (Photo by Thomas Peter/Reuters)

A “Nao” humanoid robot by Aldebaran Robotics sits in a corner while its batteries are being charged during a presentation at a branch of the Bank of Tokyo-Mitsubishi UFJ (MUFG) in Tokyo April 13, 2015. (Photo by Thomas Peter/Reuters)

A woman interacts with a “Nao” humanoid robot, by Aldebaran Robotics that offers basic service information, during a presentation at a branch of the Bank of Tokyo-Mitsubishi UFJ (MUFG) in Tokyo April 13, 2015. (Photo by Thomas Peter/Reuters)

A YuMi robotic arm is pictured at the world's largest industrial technology fair, the Hannover Messe, in Hanover April 13, 2015. (Photo by Wolfgang Rattay/Reuters)

A robotic arm presents flowers to girls at the booth of Schunk at the world's largest industrial technology fair, the Hannover Messe, in Hanover April 13, 2015. (Photo by Wolfgang Rattay/Reuters)

A woman reaches out to shake hands with a robotic hand at the booth of Schunk at the world's largest industrial technology fair, the Hannover Messe, in Hanover April 13, 2015. (Photo by Wolfgang Rattay/Reuters)

A robot Ecce by the Robot studio is pictured at the world's largest industrial technology fair, the Hannover Messe, in Hanover April 13, 2015. (Photo by Wolfgang Rattay/Reuters)

A robot Ecce by the Robot studio is pictured at the world's largest industrial technology fair, the Hannover Messe, in Hanover April 13, 2015. (Photo by Wolfgang Rattay/Reuters)

A robot in the Robotic Kitchen prototype created by Moley Robotics cooks a crab soup at the company's booth at the world's largest industrial technology fair, the Hannover Messe, in Hanover April 13, 2015. (Photo by Wolfgang Rattay/Reuters)

A robot in the Robotic Kitchen prototype created by Moley Robotics cooks a crab soup at the company's booth at the world's largest industrial technology fair, the Hannover Messe, in Hanover April 13, 2015. (Photo by Wolfgang Rattay/Reuters)

A robot in the Robotic Kitchen prototype created by Moley Robotics cooks a crab soup at the company's booth at the world's largest industrial technology fair, the Hannover Messe, in Hanover April 13, 2015. (Photo by Wolfgang Rattay/Reuters)

An employee presents the eMotion Butterfly, a collision-free flying object, developed by German FESTO company, at the world's largest industrial technology fair, the Hannover Messe, in Hanover April 12, 2015. (Photo by Wolfgang Rattay/Reuters)

An employee presents the SCHUNK 5-finger anthropomorphic gripper hand at the world's largest industrial technology fair, the Hannover Messe in Hanover, April 12, 2015. (Photo by Wolfgang Rattay/Reuters)