David Potter, the visionary founder of British tech company Psion, has died at the age of 82. The South African-born physicist passed away on 28 June 2026, just days before his 83rd birthday, leaving behind a legacy that reshaped personal computing and mobile communications.
Potter founded Psion in 1980, initially supplying software for Sinclair Research's ZX80 and ZX81 computers, including a popular Flight Simulator. By 1984, the company had launched the Organizer, widely regarded as the world's first handheld computer. Its successor, the Organizer II, introduced two slots for what many consider the industry's first replaceable solid-state drives (SSDs), a concept that predated modern flash storage by decades.
Psion's later Series 3 and Series 5 pocket computers sold in their millions, running the company's bespoke EPOC operating system. That software was later renamed Symbian and became the operating system behind the first wave of smartphones from Nokia and other manufacturers. The technology underpinned a generation of mobile devices before the rise of iOS and Android.
In 2004, Psion sold its stake in Symbian to Nokia, a move that drew criticism from some shareholders. Potter defended the decision, warning that the open-source Linux operating system posed a growing threat — a prediction that proved prescient as Android, built on Linux, came to dominate the smartphone market. Microsoft later acquired Nokia's phone business and effectively wound it down.
Beyond technology, Potter was a noted philanthropist and had diverse business interests, including a duvet manufacturing company. In his later years, he served as honorary chairman of Planet Computers, a firm that produced the Gemini pocket computer using keyboard technology licensed from Psion. He was interviewed by the Archives of IT in 2016, reflecting on a career that spanned from home computer software to the dawn of the smartphone era.
For UK businesses and consumers, Potter's work highlights the country's historical role in inventing foundational mobile technology. The rise and fall of Psion and Symbian offer lessons about the importance of adapting to market shifts — a challenge that remains relevant as British firms navigate today's AI and semiconductor landscapes. The UK's Information Commissioner's Office and the EU's AI Act now govern many of the data and software issues that Potter's generation first encountered.