In some circumstances instead of using a shielded component it is more effective to create a shielded space.
Shielded rooms are used to protect medical or industrial sensors from any external interference, as even the Earth’s magnetic field can corrupt the data being collected. High tech production facilities like the production of integrated circuits by electron beam technology also need such protection.
Another practical example involved an Imphy Alloys customer installing a shielded floor in an office building located over a railway line.
Manufacturers of shielded rooms often use magnetic alloys sandwiched with other materials such as Silicon Iron, Pure Iron or Aluminium to protect against a wide spectrum of electromagnetic signals.

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