No one is saying the scans can't be done, BUT just as men frisk men and women frisk women because of modesty and decency, the scans should also take this into account. Either women scan women etc. or the scan is viewed in an office out of view of who is being scanned. Female modesty is not a uniquely Jewish issue.
Iraqi police fire tear gas as thousands of protests burst into Green Zone, storm Parliament (AP)
from the article: European rabbis call new airports scanners 'immodest'