Will the social security card and key be degaussed together?

Yes, under normal circumstances, all magnetic cards should not be put together with mobile phone keys and other magnetism to avoid degaussing.

Degaussing: When the magnetized material is affected by external energy, such as heating, impact, etc., the magnetic distance direction of the magnetic domain will become inconsistent, and the magnetism will weaken or disappear. This process is called degaussing.

Another common method is to place the magnetic material in an alternating magnetic field and gradually weaken the intensity of the alternating magnetic field until it disappears and the material demagnetizes. Such as CRT kinescope.

Ferromagnetic materials are widely used, but they are easily magnetized to produce remanence, which affects the subsequent precision machining and equipment operation.

Degaussing is a common technique to destroy data stored on magnetic tape. Using degaussing equipment like a box to change the magnetic field of the tape can effectively destroy the data on the tape.