There is no state of no data. You are known to exist, you are known for not participating in something that is common for your group. That, in combination with the thousands of other data points about you will determine whether you are of interest. That may determine whether your car gets searched during a traffic stop, or whether you're put on a no-fly list.
This is not complicated to build, it is simple to build, and the only logical way of accomplishing what the government claims that they're attempting to accomplish.
This is not complicated to build, it is simple to build, and the only logical way of accomplishing what the government claims that they're attempting to accomplish.