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Report: Apple is testing foldable iPhones, having the same problems as everyone else
(arstechnica.com)
This is a most excellent place for technology news and articles.
My fingers are not very precise, and also sweaty very often. When they are sweaty, I basically use touchscreens only if I absolutely have to. Sweaty fingers are an inconvenience with everything, but they weren't a practical problem with normal buttons.