Magnet-system PROMAG

In this system just a mere 1 mm (0.04 inch) thick metal plate (45x8 mm/ 1.77x0.31 inch format) is attached to the rear of the name badge- this makes  the entire system not at all bulky and it can also be used with very small badges.

PROMAG (adhesion is equal to INFOMAG)
plastic grey, 45x8x5 mm (1.77x0.31x0.20 inch) and metal plate 45x8x1 mm (1.77x0.31x0.04 inch)

Recommendation for:

• Mikado
  
  

Harmlessness of magnet fastenings
The Federal Office for Radiation Protection explains as follows, in response to the frequently asked question  of whether magnetic clips on name badges are harmless:
The wearing of small permanent magnets on the body, in the form of, for example, magnetic clips for name badges is generally not damaging to your health. This use leads only to very limited local exposure to weak static magnetic fields.  Normal use of such magnetic clips is no way near sufficient to  trigger the adverse biological effects that we are all familiar with.

Small permanent magnets may however interfere with certain types of coronary pacemaker. From approx. 1 mT magnetic flux density upwards, it is possible that magnetic cards , credit cards, watches etc. are also affected. It is therefore advisable not to wear the name badge directly above an implanted pacemaker and not to store sensitive magnetic cards in jacket pockets.
Source: Bundesamt für Strahlenschutz (BfS)
 
Important Informations from infoplus:
Magnet systems should basically not be worn by people with pacemakers and should not be stored in the vicinity of magnetic cards or diskettes!