The greatest value of the 21st century. Continuation.

Hello.
I continue the topic started last post on how people are being monitored and various companies are collecting data for their purposes.

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In shopping malls not so long ago began to install special systems that collect and summarize information from visitors' smartphones. If the smartphone includes a wi-fi search, then the system catches the mac address of the smartphone and on it identifies the smartphone. In the future, information is gathered about the movement of the owner of the smartphone, how often and what stores he visits, at what time he is in the shopping center and next to him and on the basis of this data the system decides whether to display one or another advertisement to the smartphone user, for example, every day in the morning and in the evening passes by this shopping center it is concluded that a person lives or works not far from this place and is invited to go to the nearest cafe.

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In addition to the cunning systems of surveillance on wi-fi, information is collected at the ticket offices of stores where a person pays a plastic card. The bank collects information about a person's preferences, analyzes it and offers this personalized information to companies so that they can make personalized advertising that takes into account a person's preferences.
In general, modern smartphones are an ideal device for collecting information about the user and his preferences, he is constantly with the person and used for a large number of different purposes.
The collected data is used not only for advertising purposes.
Banks actively use them to assess the reliability of the borrower and the magnitude of the risk of non-repayment of the loan.
Cooperating with communication operators, banks analyze the user's behavior on the Internet, his entries in social networks, online purchases, the most frequent location of the smartphone (home and work address), the amount of monthly payments for communication, being in roaming, how many times the number was blocked for non-payment and other data. Using this data, the scoring system of the bank with a high degree of probability can identify a client who may not be able to pay off the loan and deny him a loan.

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The collected data is also used for medical purposes, in the United States special systems use them to make a more accurate picture of the disease, on the Internet you can learn a lot about the habits and lifestyle of a person.
Insurance companies also use data collected from the Internet and social networks about a person who applied for medical insurance to find out whether he hides serious illnesses or is addicted to extreme sports and adjusts the price of insurance based on this data.

In the future, the scope of user data will be expanded and the struggle for these data between companies will worsen.
To keep confidentiality in the modern information world is no longer possible, even if you do not use questionable Internet sites, do not specify your phone number on the Internet, you still have enough information about you to find out about your preferences.
Thank you.