BlackBerry’s new BlackBerry Classic, unveiled Wednesday, looks just like the BlackBerry your dad used to use — and that means your dad’s going to love it. These days, most smartphone makers have ditched hardware keyboards in favor of bigger touchscreen real estate. But that doesn’t mean everybody wants touchscreen keyboards. I can’t tell you how many times I’ve heard business-types in particular lament over their long-lost BlackBerry and its keyboard, like the BlackBerry Bold above to the right. That means the long-flagging BlackBerry has an opening, however small, to differentiate itself from Apple, Samsung and its other competitors by going long on the keyboard for customers who want one.