Shielding from ELF:
The greatest "shielding" from ELF energy is the physical distance. This is particularly correct for people sitting subsequently to (instead of in front of) a desktop computer monitor. The ELF field dies off quickly with distance from the monitor cabinet. The computer workstations in an office atmosphere must be at least 1.5 m (around 5 ft) distant. You must keep at least 0.5 m (around 18 in) away from the front of your own monitor. The monitor can be shut off whenever it is not in use.
Special monitors designed to reduce ELF fields are accessible. They are instead expensive, though they can present peace of mind for people anxious about possible long-term health effects from exposure to ELF fields.
You will at times see devices marketed with claims to remove or greatly decrease ELF fields. Several such schemes are efficient; others are not. Electrostatic screens which you can place in front of the monitor glass to stay it from attracting dust will not end ELF fields. Neither will glare the filters.
The ELF issue has fascinated the attention of fear mongers and quacks, and also the interest of legitimate scientists. It is most excellent to avoid blowing it out of proportion and not to yield to unsubstantiated media hype. When you are concerned about ELF radiation in your home or work atmosphere, consult somebody whose word you can faith, similar to a computer hardware engineer or a wireless communications engineer.