WARNING
Strong magnetic field can cause personal injury or death to individuals with medical implants or other magnetic field sensitive medical conditions.
Pacemakers and Defibrillators
Pacemakers and defibrillators can be sensitive to strong magnetic fields. If you or someone in your household has a pacemaker or defibrillator, or has health issues that require that you wear electronics of any sort, avoid magnets completely until you consult your doctor!
Damage to Magnetic Storage Media
Magnetic fields can cause damage to magnetic storage media. These include: cassette tapes, floppy disks, credit cards, videotapes, and computer hard drives. Keep all magnets at least 24 inches away from all types of magnetic media.
Damage to Electronics
Certain electronic devices are sensitive to magnetic fields and may be damaged permanently or temporarily disabled if exposed to a magnetic field that is too strong. Any video screen or television will become distorted and/or discolored if exposed to a strong magnetic field. While damaged screens can usually be demagnetized, it’s often tricky and may require qualified service technicians to do so. Other electronic devices like cell phones and pagers can also be damaged. Store your magnets in a safe place away from electronics of any kind.