But there’s no turning back. Each of us is now a split person — one human, one digital. As we become more and more reliant on the devices in our pockets or on our wrists, we — not to mention the companies and governments that rely on our accumulated data to determine our identity — may become less and less certain of which version of us is really us.
There are now, as you read this, two of you. There is the real-life you, sitting at your computer or scrolling on a mobile device, and then there is the other you — your data double — an amalgam created entirely from algorithms and computer programs. These programs analyze the trail of information left behind as the real you shops online, chats with friends, or posts fitness information on social media.