Getting to know all about you

Expect to hear more about the “quantified self” movement — the name for a growing mass of devices, apps and technologies that sense, save and synthesize everything about you. And we do mean everything. We’ve all heard about wristbands that track your heart rate and fitness. But what about a device that maps every place you’ve ever been, everything you’ve ever said and everyone you’ve ever met? It could happen sooner than you think.