Head of a humanoid research robot developed by Japan's robot maker Kokoro is displayed at the company's booth during the International Robot Exhibition 2009 (iREX 2009) in Tokyo, Japan, 25 November 2009. During a 4-day event, 189 companies and 63 organizations will exhibit their latest robotic technologies. EPA/DAI KUROKAWA
Humanoid industrial robot 'Motoman-SDA5D' developed by Japan's Yaskawa Electric Corporation demonstrates its capabilities with lego bricks at the International Robot Exhibition 2009 (iREX 2009) in Tokyo, Japan, 25 November 2009. During a 4-day event, 189 companies and 63 organizations will exhibit their latest robotic technologies. EPA/DAI KUROKAWA
An Actoroid (actor android) receptionist robot (L) developed by Japan's robot maker Kokoro is displayed with company's humanoid research robot (R) at the company's booth during the International Robot Exhibition 2009 (iREX 2009) in Tokyo, Japan, 25 November 2009. During a 4-day event, 189 companies and 63 organizations will exhibit their latest robotic technologies. EPA/DAI KUROKAWA
Humanoid industrial robots 'Nextage' developed by Japan's Kawada Industries demonstrate at the company's booth during the International Robot Exhibition 2009 (iREX 2009) in Tokyo, Japan, 25 November 2009. During a 4-day event, 189 companies and 63 organizations will exhibit their latest robotic technologies. EPA/DAI KUROKAWA
A robot named 'D+ropop' developed by Japan's robot developer Eager is displayed at the company's booth at the International Robot Exhibition 2009 (iREX 2009) in Tokyo, Japan, 25 November 2009. The company says that 'D+ropop' is the most eco-friendly robot as it is created by combining the robot mechanism with corrugated cardboard. During a 4-day event, 189 companies and 63 organizations will exhibit their latest robotic technologies. EPA/DAI KUROKAWA
A humanoid robot KHR-2HV developed by Japan's robot maker Kondo Kagaku Co., Ltd. performs single-hand pushups as an employee controls it at the International Robot Exhibition 2009 (iREX 2009) in Tokyo, Japan, 25 November 2009. During a 4-day event, 189 companies and 63 organizations will exhibit their latest robotic technologies. EPA/DAI KUROKAWA
An employee demonstrates the 'Nextage', the industrial humanoid robot developed by Japan's Kawada Industries during the International Robot Exhibition 2009 (iREX 2009) in Tokyo, Japan, 25 November 2009. During a 4-day event, 189 companies and 63 organizations will exhibit their latest robotic technologies. EPA/DAI KUROKAWA
Humanoid industrial robot 'Motoman' developed by Japan's Yaskawa Electric Corporation are displayed at the company's booth during the International Robot Exhibition 2009 (iREX 2009) in Tokyo, Japan, 25 November 2009. During a 4-day event, 189 companies and 63 organizations will exhibit their latest robotic technologies. EPA/DAI KUROKAWA
An Actoroid (actor android) receptionist robot developed by Japan's robot maker Kokoro sits as a programmer controls it during the International Robot Exhibition 2009 (iREX 2009) in Tokyo, Japan, 25 November 2009. During a 4-day event, 189 companies and 63 organizations will exhibit their latest robotic technologies. EPA/DAI KUROKAWA
An employee of UK robot maker Shadow Robot Company wearing a data glove called 'CyberGlove' (top) developed by CyberGlove demonstrates humanoid robot hand system 'C6M Dexterous Hand' (front) developed by UK robot maker Shadow Robot Company at the company's booth during the International Robot Exhibition 2009 (iREX 2009) in Tokyo, Japan, 25 November 2009. During a 4-day event, 189 companies and 63 organizations will exhibit their latest robotic technologies. EPA/DAI KUROKAWA
An employee demonstrates how a humanoid research robot named 'Hiro' developed by Japan's Kawada Industries sensors and tracks one's face at the company's booth during the International Robot Exhibition 2009 (iREX 2009) in Tokyo, Japan, 25 November 2009. During a 4-day event, 189 companies and 63 organizations will exhibit their latest robotic technologies. EPA/DAI KUROKAWA