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Problem with focus groups is you only know about what you have experienced. I knew trying to find book I wanted to read in large library was hard to find except with search because trying to use slider to get close to correct library page when only page numbers were shown as I used the slider. Page turn tap areas I never settled on options because I often change hand holding reader so I use swipes or taps as needed. Maybe new tap areas option will be better. As always have to adapt to how different companies interface or controls works. This is true for cars, motorcycles, tractors, bicycles, phones, cameras, guns, saws, welders, computers ...... well everything I use. Call this progress, lock into product, patents, it is just reality of life.
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