Field Emitter Panoply
Wearing the FEP
I'd say it's faintly visible when active, and really obvious when something pings off of it. When it's inactive...hmm. It's mildly encumbering, about equivalent to a bullet resistant vest or similar. What I'm going to say is that it consists of a belt, two bracelets, two anklets, and a kind of heavy necklace. It's substantially harder to conceal than an armored undersuit, but if nobody was scanning you, they didn't know what to look for, and you dressed correctly, you could conceal it when it's inactive.