There is a new technology that is not only on the horizon, but already in use, according to this article. It passively scans an area (that is, it does not produce radiation, but only detects it) to identify anomalies under clothing. There is no health concern here, but there is a privacy concern. Do you have an expectation of privacy when you are wearing clothing in a public place? If an anomaly is detected, is that reasonable cause for an invasive physical search?
