New York Post: A tide of so-called buy buttons promises to make it dramatically quicker and easier to buy stuff with a smartphone — upgrades that, one investor says, could make mobile shopping as fast and efficient as a hookup app. “The future of mobile shopping is going to be like Tinder, where you can just swipe and get what you want,” says Ken Seiff, whose firm, Beanstalk Ventures, has invested in a key provider of the new buy-button tech.