EPIC is leading a national campaign by the Privacy Coalition to suspend the use of "Whole Body Imaging" -- devices that photograph American air travelers stripped naked in US airports. The campaign responds to a policy reversal by the TSA which would now make the digital strip search mandatory instead of voluntary as originally announced. EPIC and others say that there are inadequate safeguards to prevent the misuse of the images. They are seeking signatures on a letter to Homeland Security Secretary Janet Napolitano. The deadline for organizations, experts, and travelers to sign the letter is May 31, 2009.