SCIFs are rooms or buildings specially designed and built with highly technical counter-measures designed to prevent eavesdropping. They are built to specific acoustic specifications, typically designed without windows, and have a litany of other measures built into their access and electronics. Some even have their very own tinfoil hats. Okay, not really, but some SCIFS have metallic radiant barrier foil to shield radio frequencies, which is basically the same thing.
If you want to access, store, or discuss classified information, you’ll need to be in one of these safe rooms to do so.
