Russian Foreign Minister Sergei Lavrov (L) speaks on a mobile phone as Organisation for Security and Co-operation in Europe (OSCE) Secretary General Lamberto Zannier (R) checks his PDA during a group photo at the OSCE conference in Dublin December 6, 2012. REUTERS/Kevin Lamarque (IRELAND - Tags: POLITICS) 

A woman (background) checks her personal digital assistant (PDA) while seated next to a work of art entitled "Woman Eating" (front) at the Smithsonian American Art Museum in Washington June 25, 2012. The life-like sculpture was created by artist Duane Hanson. REUTERS/Kevin Lamarque (UNITED STATES - Tags: SOCIETY) 

U.S. President Barack Obama checks his PDA as he arrives back at the Oval Office of the White House after speaking at the United Auto Workers conference in Washington February 28, 2012.

REUTERS/Kevin Lamarque (UNITED STATES - Tags: POLITICS) 

Senate Majority Leader Harry Reid (D-NV) (L) checks his PDA as he and Senate Minority Leader Mitch McConnell (R-KY) (R) attend the Congressional Gold Medal ceremony for U.S. astronauts John Glenn, Neil Armstrong, Michael Collins and Buzz Aldrin, at the U.S. Capitol in Washington, November 16, 2011. REUTERS/Jonathan Ernst (UNITED STATES - Tags: POLITICS SCIENCE TECHNOLOGY) 

U.S. Secretary of State Hillary Clinton checks her PDA upon her departure in a military C-17 plane from Malta bound for Tripoli, Libya October 18, 2011.
REUTERS/Kevin Lamarque (LIBYA - Tags: POLITICS) FOR BEST QUALITY IMAGE ALSO SEE: GF2EA1P10ZY01 

U.S. Secretary of State Hillary Clinton checks her PDA upon her departure in a military C-17 plane from Malta bound for Tripoli, Libya October 18, 2011. REUTERS/Kevin Lamarque (Libya - Tags: POLITICS) BEST QUALITY AVAILABLE 

Former Major League Baseball pitcher Roger Clemens (R) refers to his personal digital assistant (PDA) as he and his attorney Rusty Hardin (L) arrive for opening arguments in his trial on charges that he lied to Congress about performance-enhancing drug use, at the federal courthouse in Washington, July 13, 2011. Clemens, who won the Cy Young Award as the best pitcher in his league seven times, is on trial after vehemently denying that he ever took human growth hormone or steroids during a Congressional hearing as lawmakers investigated drug use in sports. REUTERS/Jonathan Ernst (UNITED STATES - Tags: SPORT BASEBALL CRIME LAW) 

AFL-CIO President Richard Trumka (R) checks his PDA during a meeting of the President's Council on Jobs and Competitiveness at the White House in Washington February 24, 2011. At right behind Trumka is GE Chairman and CEO Jeff Immelt. REUTERS/Kevin Lamarque (UNITED STATES - Tags: POLITICS BUSINESS) 

Democratic Senator Barbara Boxer (C) surrenders her PDA as she makes her way into the Old Senate Chamber for a closed session about the new START treaty on Capitol Hill in Washington December 20, 2010. REUTERS/Kevin Lamarque (UNITED STATES - Tags: POLITICS) 

Emergency workers use a new "PDA" handheld device to collect information about casualties during a scenario simulating the crash of two airplanes causing 500 casualties in Frankfurt, October 9 2010. The so-called "Sogros" scenario was the biggest simulation for emergency services reacting in real time in Germany ever. REUTERS/Kai Pfaffenbach (GERMANY - Tags: HEALTH SOCIETY) 

U.S. President Barack Obama (R) looks at his PDA as he arrives with aide Reggie Love to play basketball at Fort McNair in Washington September 18, 2010. REUTERS/Jonathan Ernst (UNITED STATES - Tags: POLITICS) 

Senior Infection Control nurse Lesley Shepherd poses for a photograph next to two of the new robots currently being tested for use at the new Forth Valley hospital in Larbert, Scotland June 18, 2010. The robots will be deployed in the hospital, due to open in August 2010. The robots, which can be summoned through a personal digital assistant (PDA), will be run on separate corridors underneath the hospital to differentiate between "clean" and "dirty" tasks such as transporting clinical waste, dirty linen and food, according to local media. REUTERS/David Moir (BRITAIN - Tags: HEALTH SCI TECH BUSINESS) 

A hospital porter walks past one of the new robots currently being tested for use at the new Forth Valley hospital in Larbert, Scotland June 18, 2010. The robots will be deployed in the hospital, due to open in August 2010. The robots, which can be summoned through a personal digital assistant (PDA), will be run on separate corridors underneath the hospital to differentiate between "clean" and "dirty" tasks such as transporting clinical waste, dirty linen and food, according to local media. REUTERS/David Moir (BRITAIN - Tags: HEALTH SCI TECH BUSINESS) 

Senior Infection Control nurse Lesley Shepherd looks on as she walks past one of the new robots currently being tested for use at the new Forth Valley hospital in Larbert, Scotland June 18, 2010. The robots will be deployed in the hospital, due to open in August 2010. The robots, which can be summoned through a personal digital assistant (PDA), will be run on separate corridors underneath the hospital to differentiate between "clean" and "dirty" tasks such as transporting clinical waste, dirty linen and food, according to local media. REUTERS/David Moir (BRITAIN - Tags: BUSINESS HEALTH SCI TECH) 

Senior Infection Control nurse Lesley Shepherd looks on as she walks past one of the new robots currently being tested for use at the new Forth Valley hospital in Larbert, Scotland June 18, 2010. The robots will be deployed in the hospital, due to open in August 2010. The robots, which can be summoned through a personal digital assistant (PDA), will be run on separate corridors underneath the hospital to differentiate between "clean" and "dirty" tasks such as transporting clinical waste, dirty linen and food, according to local media REUTERS/David Moir (BRITAIN - Tags: HEALTH SCI TECH BUSINESS) 

Senior Infection Control nurse Lesley Shepherd poses for a photograph next to one of the new robots currently being tested for use at the new Forth Valley hospital in Larbert, Scotland June 18, 2010. The robots will be deployed in the hospital, due to open in August 2010. The robots, which can be summoned through a personal digital assistant (PDA), will be run on separate corridors underneath the hospital to differentiate between "clean" and "dirty" tasks such as transporting clinical waste, dirty linen and food, according to local media. REUTERS/David Moir (BRITAIN - Tags: HEALTH SCI TECH BUSINESS) 

Senior Infection Control nurse Lesley Shepherd (L) poses for a photograph and talks to staff walking past as she stands on the arms of one of the new robots currently being tested for use at the new Forth Valley hospital in Larbert, Scotland June 18, 2010. The robots will be deployed in the hospital, due to open in August 2010. The robots, which can be summoned through a personal digital assistant (PDA), will be run on separate corridors underneath the hospital to differentiate between "clean" and "dirty" tasks such as transporting clinical waste, dirty linen and food, according to local media. REUTERS/David Moir (BRITAIN - Tags: HEALTH SCI TECH BUSINESS) 

Senior Infection Control nurse Lesley Shepherd poses for a photograph as she stands on the arms of one of the new robots currently being tested for use at the new Forth Valley hospital in Larbert, Scotland June 18, 2010. The robots will be deployed in the hospital, due to open in August 2010. The robots, which can be summoned through a personal digital assistant (PDA), will be run on separate corridors underneath the hospital to differentiate between "clean" and "dirty" tasks such as transporting clinical waste, dirty linen and food, according to local media. REUTERS/David Moir (BRITAIN - Tags: HEALTH SCI TECH BUSINESS) 

A trader works on the floor of the New York Stock Exchange in New York May 10, 2010. REUTERS/Shannon Stapleton (UNITED STATES - Tags: BUSINESS) 

International Monetary Fund (IMF) Managing Director Dominique Strauss-Kahn checks his PDA at the G20 Meeting of Finance Ministers and Central Bank Governors during the spring IMF-World Bank meeting in Washington April 23, 2010. REUTERS/Yuri Gripas (UNITED STATES - Tags: POLITICS BUSINESS) 

An aide to U.S. Treasury Secretary Timothy Geithner shows him a message on a PDA as he takes his seat to testify before the Senate Foreign Relations Committee hearing on "The U.S. and the G-20: Remaking the International Economic Architecture' on Capitol Hill in Washington November 17, 2009. Weaning the global economy off its reliance on U.S. consumers will help rebalance growth and support attempts to bring down unemployment, Geithner said on Tuesday. REUTERS/Kevin Lamarque (UNITED STATES POLITICS BUSINESS) 

U.S. Davis Cup captain Patrick McEnroe looks at his PDA as James Blake practices his serve ahead of his match against Switzerland's Stanislas Wawrinka in Birmingham, Alabama, March 6, 2009. REUTERS/Kevin Lamarque (UNITED STATES) 

US Senator Hillary Clinton (D-NY) checks her PDA as she takes her seat for the third debate between US Democratic presidential nominee Senator Barack Obama (D-IL) and US Republican presidential nominee Senator John McCain (R-AZ) at Hofstra University in Hempstead, New York October 15, 2008. REUTERS/Gary Hershorn (UNITED STATES) US PRESIDENTIAL ELECTION CAMPAIGN 2008 (USA) 

US Senator Hillary Clinton (D-NY) looks at her PDA as she takes her seat for the third debate between US Democratic presidential nominee Senator Barack Obama (D-IL) and US Republican presidential nominee Senator John McCain (R-AZ) at Hofstra University in Hempstead, New York, October 15, 2008. REUTERS/Gary Hershorn (UNITED STATES) US PRESIDENTIAL ELECTION CAMPAIGN 2008 (USA) 

A handheld computer used on the trading floor of the New York Stock Exchange is displayed at the Museum of American Finance in New York September 18, 2008. REUTERS/Eric Thayer (UNITED STATES) 

Illinois Democratic Senator Barack Obama checks his PDA as he walks up the stairs after a vote in the Capitol in Washington March 13, 2008. REUTERS/Kevin Lamarque (UNITED STATES) US PRESIDENTIAL ELECTION CAMPAIGN 2008 (USA) 

A worker of the International Potato Center (CIP) classifies true potato seeds at a selection lab in Lima January 24, 2008. Peru will send thousands of true potato seeds to a vault in the North Pole at the end of the month on an international effort to preserve in time key foods against the eventuality of a global disaster, the CIP said on Wednesday. REUTERS/Enrique Castro-Mendivil (PERU) 

Jay Leboff, inventor of the NRG Dock, shows off the device about to hit the market at the Consumer Electronics Show CES Unveiled event in Las Vegas, Nevada January 5, 2008. The device allows the user to charge personal electronics like phones, PDA's and laptops with solar energy. The show opens January 7. REUTERS/Rick Wilking (UNITED STATES) 

A Palm representative demonstrates a Palm Centro during the DigitalLife consumer electronics show in New York September 27, 2007. REUTERS/Lucas Jackson (UNITED STATES) 

Jacob Taylor uses a myLEADERBOARD device, a Dell Axim PDA that displays course and player real-time information and is available for rental for the first time at a major golf tournament at the PGA Championship in Medinah, Illinois, August 16, 2006. The unit connects with wireless access points scattered around the course and rents for $25 a day. REUTERS/Frank Polich (UNITED STATES) 

A golf fan holds a myLEADERBOARD device, a Dell Axim PDA that displays course and player real-time information and is available for rental for the first time at a major golf tournament at the PGA Championship in Medinah, Illinois, August 16, 2006. The unit connects with wireless access points scattered around the course and rents for $25 a day. REUTERS/Brian Snyder (UNITED STATES) 

A golf fan holds a myLEADERBOARD device, a Dell Axim PDA that displays course and player real-time information and is available for rental for the first time at a major golf tournament at the PGA Championship in Medinah, Illinois, August 16, 2006. The unit connects with wireless access points scattered around the course and rents for $25 a day. REUTERS/Brian Snyder (UNITED STATES) 

German Chancellor Angela Merkel shows a Fujitsu Siemens Pocket LOOX PDA device during CeBIT computer fair in Hanover March 9, 2006. This year's CeBIT, running to March 15 expects to attract more than 6,000 exhibitors to present their latest news and products at the world's largest computer and information technology fair. REUTERS/Christian Charisius 

A model presents the latest Fujitsu Siemens Pocket LOOX PDA at the CeBIT computer fair in the northern German town of Hanover March 8, 2006. The world's largest computer and information technology fair CeBIT runs from March 9 until March 15, 2006. REUTERS/Fabrizio Bensch 

A Hitachi employee demonstrates what the company says is the world's smallest vein authentification device built into a personal computer at an unveiling in Tokyo October 3, 2005. The system, measuring 39 mm (1.5 inch) in depth, 34 mm (1.3 inch) in width and 15mm (0.59 inch)in height, will be applied to handheld devices such as PDAs and personal computers, the company said. 

Japan's Hitachi unveils what the company says is the world's smallest vein authentication system device in Tokyo October 3, 2005. The system, measuring 39 mm (1.5 inch) in depth, 34 mm (1.3 inch) in width and 15mm (0.59 inch) in height, will be built into personal computers and PDAs, the company said. 

Japan's Hitachi unveils what the company says is the world's smallest vein authentication system device in Tokyo October 3, 2005. The system, measuring 39 mm (1.5 inch) in depth, 34 mm (1.3 inch) in width and 15mm (0.59 inch) in height, will be built into personal computers and PDAs, the company said. REUTERS/Yuriko Nakao 

A Hitachi employee demonstrates what the company says is the world's smallest vein authentification device built into a personal computer at an unveiling in Tokyo October 3, 2005. The system, measuring 39 mm (1.5 inch) in depth, 34 mm (1.3 inch) in width and 15mm (0.59 inch)in height, will be applied to handheld devices such as PDAs and personal computers, the company said. REUTERS/Yuriko Nakao PP05100038 

New PDA phone from BenQ Corp. seen on display at Taiwan's Computex, world's second largest computer show in Taipei. A new PDA phone from BenQ Corp. is seen on display at Taiwan's Computex, the world's second largest computer show, June 1, 2005. Tech companies are gathering this week at Taiwan's Computex to unveil a new generation of stylish electronic gadgets and their innovative components to win consumer hearts. REUTERS/Richard Chung 

A sales agent at BenQ Corp. displays a PDA phone and a smartphone made by the Taiwan company at Taipei's Computex. A sales agent at BenQ Corp. displays a PDA phone and a smartphone made by the company at Computex, the world's second largest computer show, in Taipei June 1, 2005. Tech companies are gathering this week at Taiwan's Computex to unveil a new generation of stylish electronic gadgets and their innovative components to win consumer hearts. REUTERS/Richard Chung 

An employee of U.S. provider of business communication AVAYA poses with an PDA at the world's largest computer fair CeBIT in Hanover. An employee of U.S. provider of business communication AVAYA poses with an PDA at the world's largest computer fair CeBIT in Hanover March 9, 2005. Some 6,200 exhibitors from 70 nations present their latest news and products at the world's largest computer and information technology fair CeBIT which runs from March 10 until March 26, 2005. REUTERS/Fabrizio Bensch 

A model presents the Vodaphone UMTS based news service on a Motorola A 1000 PDA at the world's largest computer fair CeBIT in Hanover. A model presents the Vodaphone UMTS based news service on a Motorola A 1000 PDA at the world's largest computer fair CeBIT in Hanover March 8, 2005. Some 6,200 exhibitors from 70 nations present their latest news and products at the world's largest computer and information technology fair CeBIT which runs from March 10 until March 26, 2005. REUTERS/Fabrizio Bensch 

John Bell (R) and Rick Roell (L) wear their product, an electronic scrolling jacket, as they stroll the floor looking for investors, customers and licensees at the 2005 International Consumer Electronics Show (CES) in Las Vegas, January 6, 2005. Their company, NYX, hope to sell to police, fire and emergency departments the safety device as well as marketing and fashion companies. The jackets are controlled by a PDA in the pocket and can display logos as well as scrolling text. REUTERS/Mike Blake MB 

A Nokia 9300 Professional Smartphone is shown at the Nokia Capital Market Day event, a conference for investors and industry watchers in New York, November, 4, 2004. The phone features a full QWERTY keyboard, internet browsing, and a speakerphone in addition to PDA functionality. 

A Nokia 7710 widescreen smartphone is shown at the Nokia Capital Market Day event, a conference for investors and industry watchers in New York, November, 4, 2004. The device combines a stylus-based PDA, a GSM phone and web-browsing and video capability and is expected to hit markets early in 2005. 

A Nokia 9300 Professional Smartphone is shown at the Nokia Capital Market Day event, a conference for investors and industry watchers in New York, November, 4, 2004. The phone features a full QWERTY keyboard, internet browsing, and a speakerphone in addition to PDA functionality. REUTERS/Jeff Zelevansky JAZ 

A Nokia 7710 widescreen smartphone is shown at the Nokia Capital Market Day event, a conference for investors and industry watchers in New York, November, 4, 2004. The device combines a stylus-based PDA, a GSM phone and web-browsing and video capability and is expected to hit markets early in 2005. REUTERS/Jeff Zelevansky JAZ/HB 

Japan's Sharp Corp unveils its new 'Zaurus SL-C3000' PDA (personal digital assistant), a palm-sized mobile device, in Tokyo October 15, 2004. The PDA, equipped with four gigabite hard disk drive, will go on sale in Japan on November 10, 2004 for around 80,000 yen ($730). 

Japan's Sharp Corp. employee shows off the company's newly unveiled 'Zaurus SL-C3000' PDA (personal digital assistant), a palm-sized mobile device, in Tokyo October 15, 2004. The PDA, equipped with four gigabite hard disk drive, will go on sale in Japan on November 10 for about 80,000 yen ($730). 

Japan's Sharp Corp unveils its new 'Zaurus SL-C3000' PDA (personal digital assistant), a palm-sized mobile device, in Tokyo October 15, 2004. The PDA, equipped with four gigabite hard disk drive, will go on sale in Japan on November 10, 2004 for around 80,000 yen ($730). REUTERS/Yuriko Nakao YN/FA 

Japan's Sharp Corp. employee shows off the company's newly unveiled 'Zaurus SL-C3000' PDA (personal digital assistant), a palm-sized mobile device, in Tokyo October 15, 2004. The PDA, equipped with four gigabite hard disk drive, will go on sale in Japan on November 10 for about 80,000 yen ($730). REUTERS/Yuriko Nakao YN/FA 

Tony Greco, marketing and communications manager for Sony Ericsson Mobile Communications, holds a P900 "smart phone" during the Consumer Electronics Show in Las Vegas, Nevada, January 9, 2004. The world phone with Internet access also incorporates a PDA, video, still and voice digital recording and an MP3 music player in a compact package. The phone is available online for $799, he said. 

Tony Greco, marketing and communications manager for Sony Ericsson Mobile Communications, holds a P900 "smart phone" during the Consumer Electronics Show in Las Vegas, Nevada, January 9, 2004. The world phone with Internet access also incorporates a PDA, video, still and voice digital recording and an MP3 music player in a compact package. The phone is available online for $799, he said. TECOM REUTERS/ Steve Marcus PP04010040 SM/JDP 

A Sony Corp employee shows off the new 'CLIE PEG-NX80V' personal digital assistant (PDA), fitted with a camera, in Tokyo June 27, 2003. The PDA which carries a 1.3 mega-pixel digital camera, incorporates a software that enables users to input Japanese charecters directly to the screen. The new CLIE will retail for about 60,000 yen ($500) in Japan when it is launched on June 28. [It will be launched in the United States, Europe and Hong Kong in July.] 

Sony Corp's "CLIE PEG-NX80V" personal digital assistant fitted with a camera is displayed in Tokyo June 27, 2003. The PDA which carries a 1.3 mega-pixel digital camera, incorporates a software that enables users to input Japanese charecters directly to the screen. The new CLIE will retail for about 60,000 yen ($500) in Japan when it is launched on June 28. [It will be launched in the United States, Europe and Hong Kong in July.] 

Sony Corp's "CLIE PEG-NX80V" personal digital assistant fitted with a
camera is displayed in Tokyo June 27, 2003. The PDA which carries a 1.3
mega-pixel digital camera, incorporates a software that enables users
to input Japanese charecters directly to the screen. The new CLIE will
retail for about 60,000 yen ($500) in Japan when it is launched on June
28. It will be launched in the United States, Europe and Hong Kong in
July. REUTERS/Yuriko Nakao

YN/FA 

A Sony Corp employee shows off the new 'CLIE PEG-NX80V' personal
digital assistant (PDA), fitted with a camera, in Tokyo June 27, 2003.
The PDA which carries a 1.3 mega-pixel digital camera, incorporates a
software that enables users to input Japanese charecters directly to
the screen. The new CLIE will retail for about 60,000 yen ($500) in
Japan when it is launched on June 28. It will be launched in the United
States, Europe and Hong Kong in July. REUTERS/Yuriko Nakao

YN/FA 

Hewlett-Packard Chairman and CEO Carly Fiorina shows off the new Compac IPAC
pocket computer during her keynote address to COMDEX 2002 attendees,
November 18, 2002 in Las Vegas. The new pocket computer uses finger print
technology for secure access to the device. Computer and software
manufactures from around the world have gathered in Las Vegas this week to
show the latest innovations in their industry. REUTERS/Mike Blake

MB/HB 

An employee of Japanese manufacturer Sharp demonstrate its new SL-C700 Zaurus at an unveiling of the new personal digital assistant (PDA) in Tokyo November 12, 2002. The SL-C700 Zaurus uses Linux and Java software, has a two-way system monitor for horizontal and vertical swivel-viewing and is priced around 60,000 yen (U.S. $503) 

An employee of Japanese electronics manufacturer Sharp shows off its new SL-C700 Zaurus at an unveiling of the new personal digital assistant (PDA) in Tokyo, November 12, 2002. The SL-C700 Zaurus uses Linux and Java software and has a two-way system monitor for horizontal and vertical swivel-viewing and is priced around 60,000 yen (U.S. $503 ).