Applications for magnetic stripe cards
On magnetic stripe cards, a thin strip is covered with magnetic metal oxide and allows storing and reading for smaller amounts of data. Magnetic stripe cards are considerably cheaper to manufacture than chip cards. Magnetic strips are particularly suitable for access systems of all kinds, for example as key card in hotels, in car parks, at concerts or even for working time recording in companies. Bank cards are usually equipped with a combination of magnetic stripe and chip, on the one hand to store customer data and on the other hand to enable payment functions.
Depending on the field of application magnetic stripe cards are offered in two security classes:
HiCo (High Coercivity)
High energy in writing (2750 Oe); low susceptibility to magnetic influences.
Cards with HiCo magnetic stripes are almost always protected against unwanted deletions. Strong magnetic field that can erase a HiCo card can not be found in our everyday life.
LoCo (Low Coercivity)
Low energy when writing (300 Oe); vulnerable to data loss due to magnetic influences (magnetic closures, etc.)
This magnetic stripe has a lower magnetic flux density, therefore cards with LoCo magnetic stripe can be erased by other magnetic fields easier. If a LoCo magnetic stripe is deleted by these foreign magnetic fields, the card must be renewed. This is probably known to many if you carry a cell phone too close to your magnetic card.