> There is no readily available linkage between my presence at the pat down and my identity. I have never had to identify myself for scanning or for pat down.

> There is no readily available linkage between my presence at the pat down and my identity. I have never had to identify myself for scanning or for pat down. This is false. I apologize in advance for not being able to substantiate this beyond my own anecdote, but I was once flying cross country, at the part where they scan your ID before standing in line to have your genitals irradiated. A part of the agent's screen that isn't normally visible was facing me for whatever reason, and when my ID was scanned, "opt out requested" or similar appeared in green text. I had previously also been 100% opt out. Presumably they were referring to times I had opted out in the past. I won't speculate about how they link this data, it's not terribly hard, but FWIW, they know, and keep track. I've never gotten a TSA ticket, despite also flying with lots of questionable-looking microcontrollers. I've even gone so far as to leave a note in the bag explaining what each piece was.