In the context of big data, people have nothing to hide. It can see every voice, every chat, every word you've ever said, every person you've ever met, every thing you've ever done. It's just that no one extracts this information from ordinary people to look at it. It's also only some authorities that apply for permission to get the part of the information they want when they need it.

The use of big data can be said to be very extensive and ubiquitous. For us, an ID card, a cell phone can go all over the world in the era of casual browsing sites, shopped stores, big data will help you specialize in processing, it can be said that personal privacy at any time may be stolen, use.