In a letter to the White House, consumer advocate Ralph Nader and EPIC President Marc Rotenberg have asked President Obama to suspend the deployment of body imaging devices until "a comprehensive evaluation of the devices' effectiveness, health impacts, and privacy safeguards is completed by an independent board of review." Mr. Nader and Mr. Rotenberg point to a recent workshop at which experts noted that the devices are ineffective, that health risks have not been assessed, and that the TSA has misrepresented the privacy safeguards. They also said that air travelers subject to secondary screening who are actually familiar with the capabilities of body scanners would prefer a pat-down search to a body scan for both privacy and religious reasons. European governments are currently undertaking a three-month review of the body scanner proposal. For more information see EPIC: Whole Body Imaging.