At its simplest, digital currency is a type of money. With varieties including bitcoin,ethereumand dogecoin, it's acryptocurrency; it can be stored in an online account, on a USB drive, or in a digital wallet app on your computer or phone. The value of digital currency goes up and do...
My first smartphone was the HTC Evo 3D, an Android phone I got for Christmas in 2011. I remember being so excited to try all the apps I had seen friends use, plus the 3D camera was a cool (though gimmicky) feature not all phones had. Ev. Safronov/...
Maybe it's something practical like multi-day battery life technology, or something more out there. I'm not great at imagining things that don't exist yet, so I struggle to think of something interesting for this. Maybe some kind of fold-out controller that made it easier to play games ...