Maybe you know these annoying advertisements which try to tell you that it is possible to use your cell phone to see people (especially gorgeous women) nude, or these old ads from the 60ies about X-Ray goggles.
Somehow they caught my attention, cause wouldnt it be possible to make a handheld-device which could emmit photons with a little bit more energy so that they would go through clothes, but would be reflected by skin so that they could be detected by the same device?
Would that be possible and could it be used for more useful things?