The magnetic strip on high coercivity cards (also called high energy cards) are made up of magnetic particles that are not easily altered by magnetic fields.
For example, when a high coercivity card comes into contact with items such as a magnetic screwdriver or magnetic clasp, the information on the card is far less likely to be affected, unlike standard low coercivity cards (also called low energy cards).
Although both types of cards can be read with standard magnetic stripe readers, different equipment is required to encode each type of card.
