ACLU: “The TSA and Amtrak Police are trying out new see-through body scanners in New York City’s Penn Station that raise serious constitutional questions. And as is so often the case, the government is not being sufficiently transparent about the devices, how they will be used, on whom, and where they will eventually be deployed. We also don’t know who will have access to the information they collect or for how long. There is also reason to believe the technology may not work as well as the TSA says it does. This “passive millimeter wave” technology works by detecting the heat radiating from the human body and analyzing ways in which those emanations may be being blocked by objects hidden on a person’s body. The machines do not emit x-rays or other radiation. The theory is that the operator of the technology will be able to tell if large object such as a suicide vest device is present underneath a person’s clothing. The technology uses an algorithm to determine whether there is an anomaly. The two devices in use are the Stand Off Explosive Detection Technology created by QinetiQ, and Digital Barriers from Thruvis…”