uch tactile features can help build muscle memory and improve accuracy — skills lost in the rush to touch screens, said Scott MacKenzie, a professor of electrical engineering and computer science at York University in Toronto who specializes in human-computer interaction. Many people who type on flat glass screens must keep their eyes focused on the surface to hit the correct key, he said. “It’s not just that visual attention is needed,” he added, “but a lot of visual attention.”
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