I have been at home these days. How to receive big data messages?

It is normal to receive text messages and big data. When you buy this card, your information will be sold. So it's easy to find you.

One is the source location method, that is, the location information is determined by the mobile data transmission mode of the mobile phone. This is different from the GPS we often hear. When the mobile phone sends and receives signals, it will automatically connect to the nearest signal transmission tower. Through the signaling data signal transmission tower containing base station information, all activities of mobile phones can be identified and traced, so as to track the location and path of mobile phone users. This is the most commonly used method and the most efficient big data screening method for this new epidemic.

Second, through the analysis of social communication information, such as the contact between people in nearby communities and markets.

Third, it can be confirmed by item information. For example, at the beginning of the epidemic in Beijing, after analyzing the confirmed personnel, the new market was determined as the birthplace, and then the seafood market was further determined. Found that the salmon chopping board carried the virus, and quickly launched an investigation by checking the close contacts related to the items. This is also an important means of investigation.