I took a trip recently between IAH and DEN and was again not surprised to see the x-ray monitors (which according to the TSA are SSI) visible at both airports. Here is a picture of one lane at IAH, Terminal C, Premier Side:



Unlike DEN, IAH plays the name game. What is disconcerting is at Terminal C, Premiere Side, the way the serpentine lane to the TDC is constructed, it winds less than a yard from a TDC station on its way to the front so that any person standing nearby can easily hear the TDC/passenger exchange. That pretty much defeats the privacy purpose of standing behind the red line.