Airline passengers walk past a robot providing tips for getting through security faster during a pilot project as they head toward a security checkpoint Tuesday, July 11, 2017, at Seattle-Tacoma International Airport, in SeaTac, Wash. Through audio instructions in English and on-screen animated instructions in six different languages, the robot told passengers to remove items such as scarves, jackets and belts, to empty their pockets and to prepare for a body scan before going through screening. During the pilot program, running in conjunction with the American Association of Airport Executives Innovation Forum, airport officials will track the number of times passengers trigger the body scanner alarm during and after the robot test.