The First Touchscreen Wasn't Apple — It Was Made in 1965
Long before iPhones, E.A. Johnson invented capacitive touch technology at the Royal Radar Establishment in Malvern, England.
Key Takeaways
- •Capacitive touch was invented 42 years before the iPhone
- •The original use case was military radar, not consumer electronics
- •Multi-touch (pinch, zoom) came from a university lab in Toronto
Root Connection
Every time you tap your phone, you're using technology rooted in 1965 British radar research — designed for military operators, not selfies.
Capacitive sensors detect tiny changes in electrical charge when your finger makes contact
Touchscreen Devices Worldwide (Billions)
Source: Statista / IDC estimates
Timeline
E.A. Johnson publishes capacitive touchscreen paper at Royal Radar Establishment
PLATO IV terminal uses first touchscreen in education
University of Toronto develops first multi-touch system
IBM Simon — first touchscreen smartphone — goes on sale
Apple iPhone popularizes multi-touch for consumers
Capacitive touch is in 15+ billion devices worldwide
In 1965, E.A. Johnson published his paper describing a capacitive touchscreen — the same fundamental technology your iPhone uses today. Working at the Royal Radar Establishment in Malvern, England, Johnson wasn't trying to build a consumer device. He was solving a military problem: how to make radar operators interact with screens more intuitively.
Johnson wasn't trying to build a consumer device. He was solving a military problem: how to make radar operators interact with screens more intuitively.
The technology he described used the electrical properties of the human body. When your finger touches the screen, it disrupts the electrostatic field, and the device detects the position. This is capacitive touch — and it's still the basis of every smartphone, tablet, and touchscreen laptop you use.
But Johnson's work didn't appear in a vacuum. The concept of interacting directly with a screen goes back even further — to 1960s light pens used with early CRT monitors. The real innovation was removing the pen entirely and using the human finger as the input device.
The multi-touch revolution — pinching, zooming, rotating — came from the University of Toronto in 1982, where researchers built a tablet that could detect multiple finger points simultaneously. Apple's genius wasn't inventing touch. It was packaging 42 years of research into something your grandmother could use.
It took 42 years for this technology to reach the mainstream. Apple's original iPhone in 2007 popularized multi-touch, but the roots go back to a British radar lab in the mid-1960s. Next time you scroll your phone, you're completing a journey that started with military radar operators in Cold War England.
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