I have a world where there are two types of beings. One type, let's call them X, exist in our "dimension," and the other, let's call them Y, exist in another "phase" or dimension.
Only 10% of X beings have the ability to see Y beings.
I need a technology that would make the Y beings visible to ALL X beings. Ie. a Y-being booster. Any ideas would be great, but this technology should be something a MacGuiver meets Einstein type genius with an Amazon account could build in his basement lab.
Furthermore, I also need a technology to make them invisible to the 10% who can currently see them (because seeing them is a bit traumatic). Ie. a Y-being blocker.
Now, I've developed a type of cloud chamber that makes them visible for scientific experiments because evil X beings are trying to kill the Y beings (using vapours that exist in both the X and Y's dimensions).
But I need something that is portable that would either block or boost the visibility of the Y beings in a radius around you that would grow or shrink depending on the power source.
This does not need to be 'real science;' it can be Star Trek or Star Gate pseudoscience, but if you have some actual links or science to back up your answer that would be awesome!
I appreciate your help!