X-ray glasses are no comic book fantasy anymore. Gone are the days when privacy mattered. The current social state created post 911 has accelerated surveillance technology and made room for advancements to ideas from the past.
So here they are, The X-Reflect x-ray glasses. Yes, they actually work. These modern specs utilize infra-red technology to penetrate various materials such as cloth, or, let's say, swimsuits. However, they are not cheap! So you don't have to worry too much about the average Joe gawking through your undergarments.