One of the biggest hesitations that a lot of users have about switching to a modern-day, touch-only smartphone is the lack of physical keys. Over time, the feeling of a button moving beneath our finger is something that we've all gotten used to - everything from our TV remotes to our computers have physical keys, so naturally the switch to a touch only device can be a difficult transition. Thanks to Japanese company KDDI, that all may be changing, though.

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