A member of election staff pastes a tag on an Electronic Voting Machine (EVM) at a distribution centre ahead of India's general election, in Ahmedabad, India, March 26, 2019. REUTERS/Amit Dave 

The Apple Watch Series 2 is shown during an Apple media event in San Francisco, California, U.S. September 7, 2016. REUTERS/Beck Diefenbach (UNITED STATES - Tags: SCIENCE TECHNOLOGY BUSINESS TELECOMS)

Rajat Dhariwal of MadRat Games models a SuperSuit during the 2016 CES trade show in Las Vegas, Nevada January 8, 2016. The SuperSuit is a wearable gaming platform that can be used to play games like laser tag and capture the flag but can be also be used to control devices like remote-controlled cars. REUTERS/Steve Marcus 

Oscar Pistorius (L) is escorted by correctional services officials as he arrives to get an electronic tag after he was granted bail in Pretoria, South Africa, December 8, 2015. REUTERS/Siphiwe Sibeko

Oscar Pistorius (2nd R) is escorted by correctional services officials as he arrives to get an electronic tag after he was granted bail in Pretoria, South Africa December 8, 2015. REUTERS/Siphiwe Sibeko

The new Amazon Fire tablet is displayed during a media event introducing new Amazon products in San Francisco, California September 16, 2015. Amazon.com Inc introduced on Thursday the $49.99 tablet, a price tag analysts said was low enough to set it apart in a crowded market and draw more customers to its online services. The new Fire tablet, one of several new and upgraded devices launched by Amazon, comes with a 7-inch (17 cm) wide screen and a front and back camera. It will start shipping on Sept. 30. Photo taken September 16, 2015. REUTERS/Beck Diefenbach 

The new Amazon Fire tablet is displayed during a media event introducing new Amazon products in San Francisco, California September 16, 2015. Amazon.com Inc introduced on Thursday the $49.99 tablet, a price tag analysts said was low enough to set it apart in a crowded market and draw more customers to its online services. The new Fire tablet, one of several new and upgraded devices launched by Amazon, comes with a 7-inch (17 cm) wide screen and a front and back camera. It will start shipping on Sept. 30. Photo taken September 16, 2015. REUTERS/Beck Diefenbach 

New Amazon Fire tablet cases are displayed during a media event introducing new Amazon products in San Francisco, California September 16, 2015. Amazon.com Inc introduced on Thursday a $49.99 tablet, a price tag analysts said was low enough to set it apart in a crowded market and draw more customers to its online services. Photo taken September 16, 2015. REUTERS/Beck Diefenbach 

The new Amazon Fire tablet is displayed during a media event introducing new Amazon products in San Francisco, California September 16, 2015. Amazon.com Inc introduced on Thursday the $49.99 tablet, a price tag analysts said was low enough to set it apart in a crowded market and draw more customers to its online services. The new Fire tablet, one of several new and upgraded devices launched by Amazon, comes with a 7-inch (17 cm) wide screen and a front and back camera. It will start shipping on Sept. 30. Photo taken September 16, 2015. REUTERS/Beck Diefenbach 

The new Amazon Fire tablet is displayed during a media event introducing new Amazon products in San Francisco, California September 16, 2015. Amazon.com Inc introduced on Thursday the $49.99 tablet, a price tag analysts said was low enough to set it apart in a crowded market and draw more customers to its online services. The new Fire tablet, one of several new and upgraded devices launched by Amazon, comes with a 7-inch (17 cm) wide screen and a front and back camera. It will start shipping on Sept. 30. Photo taken September 16, 2015. REUTERS/Beck Diefenbach 

The new Amazon Fire tablet six pack is displayed during a media event introducing new Amazon products in San Francisco, California September 16, 2015. Amazon.com Inc introduced on Thursday the $49.99 tablet, a price tag analysts said was low enough to set it apart in a crowded market and draw more customers to its online services. The new Fire tablet, one of several new and upgraded devices launched by Amazon, comes with a 7-inch (17 cm) wide screen and a front and back camera. It will start shipping on Sept. 30. Photo taken September 16, 2015. REUTERS/Beck Diefenbach 

The new Amazon Fire tablet six pack is displayed during a media event introducing new Amazon products in San Francisco, California September 16, 2015. Amazon.com Inc introduced on Thursday the $49.99 tablet, a price tag analysts said was low enough to set it apart in a crowded market and draw more customers to its online services. The new Fire tablet, one of several new and upgraded devices launched by Amazon, comes with a 7-inch (17 cm) wide screen and a front and back camera. It will start shipping on Sept. 30. Photo taken September 16, 2015. REUTERS/Beck Diefenbach 

Security personnel sweep the infield with metal detectors after the morning session on the first day of the 15th IAAF World Championships at the National Stadium in Beijing, China August 22, 2015. REUTERS/Kai Pfaffenbach (CHINA - Tags: SPORT ATHLETICS)

Employees pack tins of sweetened condensed milk inside Nestle's factory in Moga district in the northern state of Punjab, India, June 16, 2015. Nestle, like other major brands conscious of the damage a food scare can create, says it carries out extensive testing and manages parts of its procurement processes electronically so ingredients, milk for example, are tagged and traceable. It uses external audit firms to check suppliers. Picture taken June 16. REUTERS/Munish Sharma

An employee conducts milk fat testing to check the purity of milk inside a Nestle laboratory in Moga district in the northern state of Punjab, India, June 16, 2015. Nestle, like other major brands conscious of the damage a food scare can create, says it carries out extensive testing and manages parts of its procurement processes electronically so ingredients, milk for example, are tagged and traceable. It uses external audit firms to check suppliers. Picture taken June 16. REUTERS/Munish Sharma

Canadian electronic dance music duo Zeds Dead pose backstage at the MuchMusic Video Awards (MMVAs) in Toronto, June 21, 2015. REUTERS/Mark Blinch (CANADA - Tags: ENTERTAINMENT)

A man looks at price tags outside an electronics store at the Tokyo's Akihabara shopping district, Japan, May 19, 2015. Japan's economy grew at a 2.4 percent annualized rate in the January-March period, expanding for a second straight quarter on a pick-up in capital spending, the government said on Wednesday. Picture taken May 19, 2015. REUTERS/Yuya Shino 

A connected Cogito watch of Chinese watchmaker Connectedevice Ltd. is displayed at Baselworld fair in Basel March 18, 2015. The world's leading watch and jewellery show Baselworld is to be held in Basel from March 19 to 26. REUTERS/Arnd Wiegmann (SWITZERLAND - Tags: BUSINESS SOCIETY) 

A McDonald's employee passes an order to a driver at a drive through restaurant in Los Angeles, California March 17, 2015. REUTERS/Lucy Nicholson (UNITED STATES - Tags: FOOD SOCIETY) 

Investors look on in front of an electronic board showing stock information at a brokerage house in Shanghai March 17, 2015. A key China stock index rose closed at its highest in almost seven years, with investors pushing it through a psychological resistance level on hopes the market has resumed a bull run that began late last year. REUTERS/Aly Song (CHINA - Tags: BUSINESS) 

An investor looks on in front of an electronic board showing stock information at a brokerage house in Shanghai March 17, 2015. A key China stock index rose closed at its highest in almost seven years, with investors pushing it through a psychological resistance level on hopes the market has resumed a bull run that began late last year. REUTERS/Aly Song (CHINA - Tags: BUSINESS) 

A picture illustration shows Samsung's logo reflected in a person's eye, in central Bosnian town of Zenica, March 13, 2015. Picture taken March 13, 2015. REUTERS/Dado Ruvic (BOSNIA AND HERZEGOVINA - Tags: BUSINESS LOGO) 

A picture illustration shows Apple Inc's logo reflected in a person's eye, in central Bosnian town of Zenica, March 13, 2015. Picture taken March 13, 2015. REUTERS/Dado Ruvic (BOSNIA AND HERZEGOVINA - Tags: BUSINESS LOGO) 

A picture illustration shows Apple Inc's logo reflected in a person's eye, in central Bosnian town of Zenica, March 13, 2015. Picture taken March 13, 2015. REUTERS/Dado Ruvic (BOSNIA AND HERZEGOVINA - Tags: BUSINESS LOGO) 

Christian Srigley (L) and Leighton James, of Montreal-based electronic dance music duo Adventure Club, arrive at the 2015 Juno Awards in Hamilton, Ontario, March 15, 2015. REUTERS/Mark Blinch (CANADA - Tags: ENTERTAINMENT)

German Chancellor Angela Merkel makes a speech during the official opening of the CeBIT trade fair in Hanover March 15, 2015. The world's biggest computer and software fair will open to the public from March 16 to 20. REUTERS/Fabian Bimmer (GERMANY - Tags: BUSINESS POLITICS SCIENCE TECHNOLOGY BUSINESS TELECOMS)

German Chancellor Angela Merkel makes a speech during the official opening of the CeBIT trade fair in Hanover March 15, 2015. The world's biggest computer and software fair will open to the public from March 16 to 20. REUTERS/Fabian Bimmer (GERMANY - Tags: BUSINESS POLITICS SCIENCE TECHNOLOGY BUSINESS TELECOMS TPX IMAGES OF THE DAY)

German Chancellor Angela Merkel makes a speech during the official opening of the CeBIT trade fair in Hanover March 15, 2015. The world's biggest computer and software fair will open to the public from March 16 to 20. REUTERS/Fabian Bimmer (GERMANY - Tags: BUSINESS POLITICS SCIENCE TECHNOLOGY BUSINESS TELECOMS)

German Chancellor Angela Merkel makes a speech during the official opening of the CeBIT trade fair in Hanover March 15, 2015. The world's biggest computer and software fair will open to the public from March 16 to 20. REUTERS/Fabian Bimmer (GERMANY - Tags: POLITICS BUSINESS SCIENCE TECHNOLOGY BUSINESS TELECOMS)

German Chancellor Angela Merkel makes a speech during the official opening of the CeBIT trade fair in Hanover March 15, 2015. The world's biggest computer and software fair will open to the public from March 16 to 20. REUTERS/Fabian Bimmer (GERMANY - Tags: BUSINESS POLITICS SCIENCE TECHNOLOGY BUSINESS TELECOMS TPX IMAGES OF THE DAY)

Chinese Premier Li Keqiang makes a televised address during the official opening of the CeBIT trade fair in Hanover March 15, 2015. The world's biggest computer and software fair will open to the public from March 16 to 20. REUTERS/Fabian Bimmer (GERMANY - Tags: POLITICS BUSINESS SCIENCE TECHNOLOGY BUSINESS TELECOMS)

China's Vice Premier Ma Kai makes a speech during the official opening of the CeBIT trade fair in Hanover March 15, 2015. The world's biggest computer and software fair will open to the public from March 16 to 20. REUTERS/Fabian Bimmer (GERMANY - Tags: POLITICS BUSINESS SCIENCE TECHNOLOGY BUSINESS TELECOMS)

China's Vice Premier Ma Kai makes a speech during the official opening of the CeBIT trade fair in Hanover March 15, 2015. The world's biggest computer and software fair will open to the public from March 16 to 20. REUTERS/Fabian Bimmer (GERMANY - Tags: POLITICS BUSINESS SCIENCE TECHNOLOGY BUSINESS TELECOMS)

Alibaba founder and chairman Jack Ma makes a presentation during the official opening of the CeBIT trade fair in Hanover March 15, 2015. The world's biggest computer and software fair will open to the public from March 16 to 20. REUTERS/Fabian Bimmer (GERMANY - Tags: POLITICS BUSINESS SCIENCE TECHNOLOGY BUSINESS TELECOMS)

Alibaba founder and chairman Jack Ma makes a presentation during the official opening of the CeBIT trade fair in Hanover March 15, 2015. The world's biggest computer and software fair will open to the public from March 16 to 20. REUTERS/Fabian Bimmer (GERMANY - Tags: POLITICS BUSINESS SCIENCE TECHNOLOGY BUSINESS TELECOMS)

Alibaba founder and chairman Jack Ma makes a presentation during the official opening of the CeBIT trade fair in Hanover March 15, 2015. The world's biggest computer and software fair will open to the public from March 16 to 20. REUTERS/Fabian Bimmer (GERMANY - Tags: POLITICS BUSINESS SCIENCE TECHNOLOGY BUSINESS TELECOMS)

Alibaba founder and chairman Jack Ma makes a speech during the official opening of the CeBIT trade fair in Hanover March 15, 2015. The world's biggest computer and software fair will open to the public from March 16 to 20. REUTERS/Fabian Bimmer (GERMANY - Tags: POLITICS BUSINESS SCIENCE TECHNOLOGY BUSINESS TELECOMS)

Alibaba founder and chairman Jack Ma makes a speech during the official opening of the CeBIT trade fair in Hanover March 15, 2015. The world's biggest computer and software fair will open to the public from March 16 to 20. REUTERS/Fabian Bimmer (GERMANY - Tags: POLITICS BUSINESS SCIENCE TECHNOLOGY BUSINESS TELECOMS)

Alibaba founder and chairman Jack Ma makes a speech during the official opening of the CeBIT trade fair in Hanover March 15, 2015. The world's biggest computer and software fair will open to the public from March 16 to 20. REUTERS/Fabian Bimmer (GERMANY - Tags: POLITICS BUSINESS SCIENCE TECHNOLOGY BUSINESS TELECOMS)

Lower Saxony state Prime Minister Stephan Weil, German Education Minister Johanna Wanka, China's Vice Premier Ma Kai, German Chancellor Angela Merkel, Alibaba founder and chairman Jack Ma, BITKOM President Dieter Kempf and Hanover Mayor Stefan Schostok (L-R) pose for a picture during the official opening of the CeBIT trade fair in Hanover March 15, 2015. The world's biggest computer and software fair will open to the public from March 16 to 20. REUTERS/Morris Mac Matzen (GERMANY - Tags: POLITICS BUSINESS SCIENCE TECHNOLOGY BUSINESS TELECOMS)

Alibaba founder and chairman Jack Ma makes a speech during the official opening of the CeBIT trade fair in Hanover March 15, 2015. The world's biggest computer and software fair will open to the public from March 16 to 20. REUTERS/Fabian Bimmer (GERMANY - Tags: POLITICS BUSINESS SCIENCE TECHNOLOGY BUSINESS TELECOMS)

German Education Minister Johanna Wanka makes a speech during the opening of the CeBIT trade fair in Hanover March 15, 2015. The world's biggest computer and software fair will open to the public from March 16 to 20. REUTERS/Fabian Bimmer (GERMANY - Tags: BUSINESS POLITICS SCIENCE TECHNOLOGY BUSINESS TELECOMS)

BITKOM President Dieter Kempf speaks to media at the CeBIT trade fair in Hanover March 15, 2015. The world's biggest computer and software fair will open to the public from March 16 to 20. REUTERS/Morris Mac Matzen (GERMANY - Tags: POLITICS BUSINESS SCIENCE TECHNOLOGY BUSINESS TELECOMS)

BITKOM President Dieter Kempf makes a speech during the opening of the CeBIT trade fair in Hanover March 15, 2015. The world's biggest computer and software fair will open to the public from March 16 to 20. REUTERS/Fabian Bimmer (GERMANY - Tags: POLITICS BUSINESS SCIENCE TECHNOLOGY BUSINESS TELECOMS)

Actors perform during a cremony opening the CeBIT trade fair in Hanover March 15, 2015. The world's biggest computer and software fair will open to the public from March 16 to 20. REUTERS/Fabian Bimmer (GERMANY - Tags: BUSINESS ENTERTAINMENT SCIENCE TECHNOLOGY BUSINESS TELECOMS)

German Chancellor Angela Merkel, China's Vice Premier Ma Kai (L) and Alibaba founder and chairman Jack Ma pose for a picture during the official opening of the CeBIT trade fair in Hanover March 15, 2015. The world's biggest computer and software fair will open to the public from March 16 to 20. REUTERS/Morris Mac Matzen (GERMANY - Tags: POLITICS BUSINESS SCIENCE TECHNOLOGY BUSINESS TELECOMS)

German Chancellor Angela Merkel stands with Alibaba founder and chairman Jack Ma (L), German Economy Minister Sigmar Gabriel and China's Vice Premier Ma Kai (R) during the official opening of the CeBIT trade fair in Hanover March 15, 2015. The world's biggest computer and software fair will open to the public from March 16 to 20. REUTERS/Morris Mac Matzen (GERMANY - Tags: POLITICS BUSINESS SCIENCE TECHNOLOGY BUSINESS TELECOMS)

German Chancellor Angela Merkel and China's Vice Premier Ma Kai pose for a picture during the official opening of the CeBIT trade fair in Hanover March 15, 2015. The world's biggest computer and software fair will open to the public from March 16 to 20. REUTERS/Morris Mac Matzen (GERMANY - Tags: POLITICS BUSINESS SCIENCE TECHNOLOGY BUSINESS TELECOMS)

German Chancellor Angela Merkel and China's Vice Premier Ma Kai pose for a picture during the official opening of the CeBIT trade fair in Hanover March 15, 2015. The world's biggest computer and software fair will open to the public from March 16 to 20. REUTERS/Morris Mac Matzen (GERMANY - Tags: POLITICS BUSINESS SCIENCE TECHNOLOGY BUSINESS TELECOMS)

A man uses his Samsung smartphone attached to a hat with text 'VirtualVizor' before for the official opening of the CeBIT trade fair in Hanover March 15, 2015. The world's biggest computer and software fair will open to the public from March 16 to 20. REUTERS/Fabian Bimmer (GERMANY - Tags: POLITICS BUSINESS SCIENCE TECHNOLOGY BUSINESS TELECOMS)

Protesters take part in a rally against human rights abuses in China before the official opening of the CeBIT trade fair in Hanover March 15, 2015. The world's biggest computer and software fair will open to the public from March 16 to 20. The text reads 'Freedom of speech is not available in China'. REUTERS/Fabian Bimmer (GERMANY - Tags: BUSINESS SCIENCE TECHNOLOGY BUSINESS TELECOMS CIVIL UNREST)

Lower Saxony state Prime Minister Stephan Weil (L) and China's Vice Premier Ma Kai arrive for the official opening of the CeBIT trade fair in Hanover March 15, 2015. The world's biggest computer and software fair will open to the public from March 16 to 20. REUTERS/Morris Mac Matzen (GERMANY - Tags: POLITICS BUSINESS SCIENCE TECHNOLOGY BUSINESS TELECOMS)

Members of Amnesty International take part in a rally against human rights abuses in China before the official opening of the CeBIT trade fair in Hanover March 15, 2015. The world's biggest computer and software fair will open to the public from March 16 to 20. The text reads 'China censors internet. China:freedom for bloggers.' REUTERS/Fabian Bimmer (GERMANY - Tags: BUSINESS SCIENCE TECHNOLOGY BUSINESS TELECOMS CIVIL UNREST)

Protesters take part in a rally against human rights abuses in China before the official opening of the CeBIT trade fair in Hanover March 15, 2015. The world's biggest computer and software fair will open to the public from March 16 to 20. The text reads 'Freedom of speech is not available in China'. REUTERS/Fabian Bimmer (GERMANY - Tags: BUSINESS SCIENCE TECHNOLOGY BUSINESS TELECOMS CIVIL UNREST)

A protester holds the portrait of Chinese activist Hu Jia during a rally against human rights abuses in China before the official opening of the CeBIT trade fair in Hanover March 15, 2015. The world's biggest computer and software fair will open to the public from March 16 to 20. REUTERS/Fabian Bimmer (GERMANY - Tags: BUSINESS SCIENCE TECHNOLOGY BUSINESS TELECOMS CIVIL UNREST)

Lit lamps decorate the Vodafone stand at the CeBIT trade fair in Hanover March 15, 2015. The world's biggest computer and software fair will open to the public from March 16 to 20. REUTERS/Morris Mac Matzen (GERMANY - Tags: BUSINESS SCIENCE TECHNOLOGY BUSINESS TELECOMS TPX IMAGES OF THE DAY)

Lit lamps decorate the Vodafone stand at the CeBIT trade fair in Hanover March 15, 2015. The world's biggest computer and software fair will open to the public from March 16 to 20. REUTERS/Morris Mac Matzen (GERMANY - Tags: BUSINESS SCIENCE TECHNOLOGY BUSINESS TELECOMS)

Vodafone Deutschland CEO Jens Schulte-Bockum speaks to media during a news conference at the CeBIT trade fair in Hanover March 15, 2015. The world's biggest computer and software fair will open to the public from March 16 to 20. REUTERS/Morris Mac Matzen (GERMANY - Tags: BUSINESS SCIENCE TECHNOLOGY BUSINESS TELECOMS)

Vodafone Deutschland CEO Jens Schulte-Bockum speaks to media during a news conference at the CeBIT trade fair in Hanover March 15, 2015. The world's biggest computer and software fair will open to the public from March 16 to 20. REUTERS/Morris Mac Matzen (GERMANY - Tags: BUSINESS SCIENCE TECHNOLOGY BUSINESS TELECOMS)

An installation made of plates and cups is pictured a the Deutsche Telekom stand at the CeBIT trade fair in Hanover March 15, 2015. The world's biggest computer and software fair will open to the public from March 16 to 20. REUTERS/Morris Mac Matzen (GERMANY - Tags: BUSINESS SCIENCE TECHNOLOGY BUSINESS TELECOMS)