What is the effect of strong magnetism on bank cards on leather Knowing

Yes, depending on the size of the magnetic field strength impact is different.　Reason: Because of the magnets inside the phone, it can not be placed near magnetic storage media, such as computer disks, credit cards, telephone magnetic cards and other objects.　ADDITIONAL: Degaussing is a common technique for destroying data on stored magnetic tapes. By using a demagnetizing device like a box to alter the magnetic field of the tape, the data on the tape can be effectively destroyed. This way the tape (without pre-written tracks) can be reused. Degaussing can also be used to erase the contents of hard drives, USB thumb drives, smart phones or floppy disks. Of course a magnetic field is also classified as degaussing for cell phones.