Xenarc Small Touchscreen Solutions, a Brief History - American professor - Samuel Hurst. It was he, who in 1971 put forward the idea of creating a small touchscreen and then he immediately implemented it.
Touchscreen Institute of Physics
Touchscreen - Wikipedia
A (Mostly) Quick History of Smartphones - Cellular Sales
Touchscreen - Wikipedia
Invention of Touch Screens - A Brief History of Small Touchscreen Advancements by Xenarc Technologies Blog
Touchscreen - Wikipedia
the history of touch screen timeline
Invention of Touch Screens - A Brief History of Small Touchscreen Advancements by Xenarc Technologies Blog
Calaméo - Point of sale touch screen, Touch screen point of sale.
From touch displays to the Surface: A brief history of touchscreen technology
The TOUCH SCREEN technology invented in Switzerland 40 years ago.
From touch displays to the Surface: A brief history of touchscreen technology
When was touch screen technology invented? - Quora
When Was Touch Screen Invented (Why & How?)