I can see a computer system where everything is recorded about every American.
All your tax records, medical records, personal history such as which organizations you belong to, how many guns you own, your history of vehicle ownership, locations of every home you have ever had, who your relatives are, who your friends and neighbors are and where they live, where you were educated, religious preferences, how much money you have and how you spend it.
IT will be fairly simple to cross reference any record to isolate a particular segment of society.
A good chunk of this already exists, particularly if it is considered information available under the FOIA. Went on-line to see what was out there under my name and found all my addresses since 1960, every place I had ever worked, information on my marriage, divorce, children’s names and dates of birth, picture of my current vehicle with insurance information and mileage. For a few more dollars I could also have checked to see if I had had any recorded arrests or convictions. There were also some early 1940 census reports which had the name, addresses and social security numbers of my bio father, grandparents, aunts and uncles.
It’s called Facebook.
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