Bank magnetic stripe card in 2000 began to rise, mainly to facilitate the public financial management, with the increasing popularity of mobile phones, mobile phones have become an indispensable part of peoples lives, the widespread popularity of mobile phones also brought to the bank magnetic stripe card is not a small trouble, not careful friends are prone to mobile phones and bank magnetic stripe card together, a long time, found that the magnetic stripe card can not withdraw money from ATMs, so not only to the user This not only brings great trouble to the user, but also to the bank.

　　the following is an explanation of how easy it is to demagnetize a banks magnetic stripe card when placed with a mobile phone.

　　the magnetic stripe used in the early days of bank magnetic stripe cards belonged to the low hyper magnetic stripe, that is, the general anti-magnetic card (300oe) is easy to be demagnetized.

　　the magnetic stripe material is hard magnetic and the magnetic field applied by the outside world will not alter the information beyond the edge of the magnetisation curve. there are two types of magnetic stripe, HiCo and LoCo, the former and the latter are used in close proximity to each other, which can disrupt the information on low-magnetic cards.