Source:
https://scmp.com/news/hong-kong/article/1120888/customs-rejects-privacy-fears-over-scanners-airport-cruise-terminal Hong Kong
Customs rejects privacy fears over scanners at airport, cruise terminal
An example of how the system highlights contraband. Photo: Customs
Customs officials have moved to quell privacy fears over controversial new full-body scanners headed for the Kai Tak cruise terminal and Chep Lap Kok airport, saying they are not intrusive and will reduce the need for physical searches.
Only passengers deemed a high security risk will be asked to go through the scanners, which use a passive millimeter wave to detect temperature differences between a body and an object.