Faradays cage

yes. For example coax cables.

 

By using High Mu ferrous metal as a plate envelope is effective.

If you put a clear coat insulator over the plate shield you can make an even more effective envelope by laminating the shielding so the High Mu plates don't touch like, |||||, where there's a gap between magnetic shielding.

This will lower any possible chances for field inductions that emit past the shields saturation point.

Using two laminated High Mu shields is usually enough to lower Magnetic fields dramatically unless your working with tesla fields then you need better shielding, You can use many layers of the High Mu shielding, Super conductors also work, But, Both will still have Saturation points inwhich they will be ineffective.

I know this only because I put custom speakers in a Television one time and had to customize my own Magnetic shields to protect my Television tube.

Hands on experimenting.