Scan Containers Absolutely Now Act or the SCAN Act - Amends the Security and Accountability For Every Port Act of 2006 to direct the Secretary of Homeland Security (DHS) to: (1) conduct a one-year pilot program at two domestic ports to evaluate the process of 100% scanning of cargo containers and its potential for use at all domestic ports, (2) achieve a full-scale implementation of the program within one year after enactment of this Act, and (3) evaluate and report on such program within one year after program completion.

Requires the Secretary to: (1) purchase the equipment necessary to conduct the pilot program, (2) make information about the equipment available to domestic ports as part of the application process, and (3) permit such equipment to remain with the selected ports upon completion of the program.