A humanoid robot works side by side with employees in the assembly line at a factory of Glory Ltd., a manufacturer of automatic change dispensers, in Kazo, north of Tokyo, Japan, July 1, 2015. Japanese firms are ramping up spending on robotics and automation, responding at last to premier Shinzo Abe's efforts to stimulate the economy and end two decades of stagnation and deflation. Picture taken July 1, 2015. REUTERS/Issei Kato
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SoftBank's human-like robot named ‘Pepper' speaks to a customer in its role as a PR manager of Tottori prefecture at the prefecture speciality store in Tokyo, Japan, July 1, 2015. Pepper will work at the store until July 2, as the first workplace venue for its temporary staffing service. REUTERS/Yuya Shino TPX IMAGES OF THE DAY

SoftBank Corp's humanoid robot named "Pepper", dressed as a shrine maiden, "purifies" visitors at a booth during "Niconico Chokaigi 2015" in Makuhari, east of Tokyo, Japan April 26, 2015. About 150,000 people visited more than 100 booths of Japan's subcultures made through Niconico, Japan's youtube-like internet video sharing web portal, at its two-day annual offline fan meeting called "Niconico Chokaigi 2015". REUTERS/Yuya Shino

A reception employee of Nihonbashi Mitsukoshi department store (R) poses for a photo with a kimono-clad android robot named Aiko Chihira, developed by Toshiba Corp., during its unveiling at the reception desk of the store in Tokyo April 20, 2015. The humanoid robot, originally introduced by Toshiba last year, which can use sign language and introduce itself, started work at the department store reception desk in downtown Tokyo on Monday. It is designed to interact with customers and recently has been upgraded to speak Chinese, a department store offical said. REUTERS/Issei Kato TPX IMAGES OF THE DAY

A humanoid robot named Han developed by Hanson Robotics reacts as the controller commands it via a mobile phone to make a facial expression during the Global Sources spring electronics show in Hong Kong April 18, 2015. According to Hanson Robotics the robot's skin is made out of a material called Frubber, an elastic polymer that mimics the human skin, and installed with about 40 motors on its face which help create various expressions. Han can answer simple questions and staff said it can be used in the field of customer service. The show ends on April 21. REUTERS/Tyrone Siu 

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. 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. REUTERS/Thomas Peter

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. REUTERS/Wolfgang Rattay

Humanoid communication robot Kirobo appears on stage during a return debriefing session from the International Space Station to Japan, in Tokyo March 27, 2015. Kirobo has been awarded two Guinness World Records which are, "the first companion robot in space" and "the highest altitude for a robot to have a conversation". REUTERS/Yuya Shino 

The hitchBOT is seen posed next to Highway 17 north of Sault Ste. Marie, Ontario, and a portion of the Trans-Canada Highway August 5, 2014. The hitch-hiking robot is now at the halfway point in its journey across Canada. Picture taken August 5, 2014. REUTERS/Kenneth Armstrong (CANADA - Tags: SOCIETY SCIENCE TECHNOLOGY TPX IMAGES OF THE DAY) 

Humanoid robot of British company RoboThespian "blushes" during the opening ceremony of the Hanover technology fair Cebit March 9, 2014, where Britain is this year's partner country. REUTERS/Wolfgang Rattay (GERMANY - Tags: BUSINESS SCIENCE TECHNOLOGY TELECOMS) 

An unidentified LS3 team member shoves an LS 3 (Legged Squad Support System) robot that was galloping off course, back on track during a high-speed demonstration in Homestead, Florida December 20, 2013. The device is designed to accompany soldiers and Marines any place they go on foot, helping to carry their gear. The south Florida city is hosting an international Robotics Challenge Trials this weekend, organized by the U.S. Defense Advanced Research Projects Agency (DARPA). The competition, for the creation of robots that can respond to natural and man-made disasters, was created following the 2011 Fukushima-Daiichi nuclear power plant disaster in Japan. After the disaster the Pentagon sent robots designed to disarm improvised explosive devices in Iraq to try to help fix problems at the destroyed reactor in areas highly contaminated by radioactive releases where humans could not work. REUTERS/Andrew Innerarity (UNITED STATES - Tags: SCIENCE TECHNOLOGY SOCIETY POLITICS TPX IMAGES OF THE DAY) 

Honda's latest version of the Asimo humanoid robot walks up stairs during a presentation in Zaventem near Brussels July 16, 2014. Honda introduced in Belgium an improved version of its Asimo humanoid robot that it says has enhanced intelligence and hand dexterity, and is able to run at a speed of some 9 kilometres per hour (5.6 miles per hour). REUTERS/Francois Lenoir (BELGIUM - Tags: SCIENCE TECHNOLOGY BUSINESS SOCIETY TPX IMAGES OF THE DAY) 

A humanoid robot named Kansei, meaning "sensibility" in Japanese, makes a facial expression depicting "happiness", next to the word "Love" during a demonstration at a laboratory of Meiji University's Robot and Science Institute in Kawasaki, south of Tokyo June 4, 2007. The robot, developed by professor Junichi Takeno and a team of researchers, is able to make up to 36 kinds of facial expressions after typing a word to its software which extracts word associations from a data base of 500,000 words and calculates the level ranging between pleasantness to unpleasantness and prompts the robot to make facial expressions accordingly. REUTERS/Yuriko Nakao (JAPAN) 

An engineer makes an adjustment to the robot "The Incredible Bionic Man" at the Smithsonian National Air and Space Museum in Washington October 17, 2013. The robot is the world's first-ever functioning bionic man made of prosthetic parts and artificial organ implants. REUTERS/Joshua Roberts (UNITED STATES - Tags: SOCIETY SCIENCE TECHNOLOGY) FOR BEST QUALITY IMAGE SEE GF2EA4P0CW301 

Chinese inventor Tao Xiangli controls his home-made humanoid robot with a remote controller as he poses with it during a photo opportunity at his house located in a old residential area in Beijing August 8, 2013. The self-taught Chinese inventor built the home-made robot, named "The King of Innovation", out of scrap metal and electronic wires that he bought from a second-hand market. Tao completed his creation in less than a year, with costs of production and living expenses amounting to 300,000 yuan ($49,037). However, the robot, which measures 2.1 metres (6.9 feet) in height and 480 kg (1058 lbs) in weight, turned out to be too tall and heavy to walk out of the front door of his house. It can perform simple movements with its hands and legs and also mimic human voices. REUTERS/Kim Kyung-Hoon (CHINA - Tags: SOCIETY SCIENCE TECHNOLOGY TPX IMAGES OF THE DAY) 

Roppie the robot plays a game of tic-tac-toe with a member of the public at the Taipei International Robot Show October 19, 2010. The robot is integrated with a human-like voice, dialogue functions, stereovision and an arm module and is aimed at providing home security, interactive companionship and health care for the elderly. The exhibition runs from October 19 - 22. REUTERS/Nicky Loh (TAIWANSOCIETY - Tags: BUSINESS SCI TECH) 

Pingpong-playing robot "Topio" is displayed during the InternationalRobot Exhibition 2009 in Tokyo November 25, 2009. The bipedal humanoidrobot is designed to play table tennis against a human being.REUTERS/Kim Kyung-Hoon (JAPAN SCI TECH SOCIETY HEALTH) FOR BEST QUALITY: ALSO SEE GM1E5CI16M901. 

Toyota Motor Corp's partner robots play instruments at the company's showroom in Tokyo May 4, 2008. REUTERS/Toru Hanai (JAPAN) 

A dentist demonstrates on a dental patient robot at its unveiling ceremony at Showa University in Tokyo March 25, 2010. The humanoid female robot was developed to give practical experience for dental students and can be used for examination purposes. The 157 cm tall robot displays autonomous action of physiological phenomenon such as eye and tongue movement and can be controlled by either original programming or an instructor using an external touch panel, the university said. REUTERS/Kim Kyung-Hoon (JAPAN - Tags: SCI TECH HEALTH SOCIETY ODDLY) 

A hundred humanoid communication robots called Robi perform a synchronized dance during a promotional event called 100 Robi, for the Weekly Robi Magazine, in Tokyo January 20, 2015.
The 34cm-tall (13.4-inch) robot, designed by Tomotaka Takahashi, chief executive officer of Robo Garage Co and project associate professor of Research Centre for Advanced Science and Technology at the University of Tokyo, is able to speak, walk and dance. The weekly magazine comes with parts of the robot, which allows buyers to have a fully assembled Robi after 70 issues. REUTERS/Yuya Shino (JAPAN - Tags: SOCIETY BUSINESS) 

Bipedal humanoid robot "Atlas", primarily developed by the American robotics company Boston Dynamics, is presented to the media during a news conference at the University of Hong Kong October 17, 2013. The 6-foot (1.83 m) tall, 330-pound (149.7 kg) robot is made of graded aluminium and titanium and costs HK$ 15 million ($1.93 million). It is capable of a variety of natural movements, including dynamic walking, calisthenics and user programmed behaviours, according to the University of Hong Kong's press release. REUTERS/Tyrone Siu (CHINA - Tags: SCIENCE TECHNOLOGY) 

Robots deliver dishes to customers at a Robot Restaurant in Harbin, Heilongjiang province January 12, 2013. Opened in June 2012, the restaurant has gained fame in using a total of 20 robots, which range in heights of 1.3-1.6 metres (4.27-5.25 ft), to cook meals and deliver dishes. The robots can work continuously for five hours after a two-hour charge, and are able to display over 10 expressions on their faces and say basic welcoming sentences to customers, local media reported. REUTERS/Sheng Li (CHINA - Tags: SOCIETY SCIENCE TECHNOLOGY FOOD) 

A visitor waves in front of the sensor that triggers the joints of a dummy that is part of "PWM1", an art creation by Taiwan artist Huang Zan-lun, during the Art Taipei 2010 August 20, 2010. Art Taipei 2010 featuring 110 galleries from 11 countries will be held from August 20-24 at the Taipei World Trade Centre. REUTERS/Pichi Chuang (TAIWAN - Tags: SOCIETY) 

Japanese toymaker Tomy Company's 'Omnibot17u i-SOBOT', listed by the Guinness Book of Records as the world's smallest humanoid robot in production, is demonstrated during a news conference in Tokyo July 20, 2007. The 16.5 cm (6.496 inches)-tall robot, powered by Sanyo Electric's eneloop nickel-metal hydride rechargeable batteries, is able to talk about 180 vocabularies and has about 200 different types of action patterns. The robot will go on sale in Japan for a price of 29,800 yen (about $243), the company said. REUTERS/Yuriko Nakao (JAPAN)