In response to an EPIC FOIA request, the Transportation Security Administration has released a document describing the technical capabilities of the airport body scanners. EPIC previously obtained documents from TSA revealing that body scanners can record, store, and transmit digital strip search images of airline passengers. Last month, the TSA issued a regulation on airport body scanners, nearly five years after a federal appeals court ordered the agency to "promptly” undertake a rule making. In 2011, EPIC successfully challenged the TSA's unlawful deployment of airport body scanners. Despite public comments that overwhelmingly favor less invasive security screenings, the TSA plans to use invasive body scanners at US airports. The TSA also said it may mandate airport body scanners, even though the agency previously told the D.C. Circuit that the body scanner program was optional and the federal appeals court upheld the program, relying on the agency’s statements.