Psion PLC was a designer and manufacturer of mobile handheld computers for commercial and industrial uses. The company was headquartered in London, England, with major operations in Mississauga, Ontario, Canada, and other company offices in Europe, the United States, Asia, Latin America, and the Middle East. It was a public company listed on the London Stock Exchange () and was once a constituent of the FTSE 100 Index. Psion's operational business was formed in September 2000 from a merger of Psion and Canadian-based Teklogix Inc., and was a global provider of solutions for mobile computing and wireless data collection. The Group's products and services included rugged mobile hardware, secure software and wireless networks, professional services, and support programs. Psion worked with its clients in the area of burgeoning technologies, including imaging, voice recognition, and radio-frequency identification (RFID). They had operations worldwide in 14 countries, and customers in more than 80 countries. Formed in 1980, Psion first achieved success as a consumer hardware company that developed the Psion Organiser and a wide range of more sophisticated clamshell personal digital assistants (PDAs). Psion either closed or disposed of all its prior operations and then focused on rugged mobile computing systems. It withdrew from the consumer device market in 2001. Motorola Solutions announced in June 2012 that it had agreed to acquire Psion for $200 million. History Beginnings (1980–1984) Psion was established in 1980 as a software house with a close relationship with Sinclair Research. The company developed games and other software for the ZX81 and ZX Spectrum home computers, released under the Sinclair/Psion brand. Psion's games for the ZX Spectrum included Chess, Chequered Flag, Flight Simulation and the Horace series. Psion Chess was later ported to other platforms, including the early Macintosh in 1984. Early software releases for the ZX Spectrum included titles such as VU-Calc, VU-File and VU-3D along with dozens of other titles. The company name is an acronym standing for "Potter Scientific Instruments", after the company's founder, David Potter. The acronym PSI was already in use elsewhere in the world so "ON" was added to make the name PSION unique. David Potter remained managing director until 1999 and was chairman of the company until late 2009. In early 1983, Sinclair approached Psion regarding the development of a suite of office applications for the forthcoming Sinclair QL personal computer. Psion were already working on a project in this area and