Smartphones have replaced lots of other accessories -- cameras, flashlights, calculators. But many people are still reluctant to swap the wallets in their pockets for their digital counterparts.
It was only last summer that Pokemon Go turned into a global phenomenon, sending legions of players into a worldwide frantic hunt of popular cartoon characters. Today? Not so much.
When you're deep in a video game, the last thing you want to do is leave home. If only you could take the game with you for your commute to work or your bus ride to school, or to liven up your lunch hour.
At the smartphone world's annual shindig in Barcelona, tech giants are stirring up chatter on their latest wares. But there's another, less glamorous story they haven't been so keen to promote.
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