Airport security has gone through a lot of changes over the past several years. Most of these changes have resulted in longer wait times and more hoops to jump through in order to get on a plane. But there’s one potential change in the works that could do the opposite. Scientists are working on a new thermal imaging system called Alfa3 that would only require passengers to walk by the scanner. It’s not a reality yet, but if it does become one it could make air travel much more convenient. How much of an impact could something like this have on passengers?