The second-generation ID card does not have a magnetic stripe and uses an internal chip to store personal relevant identification
information, including name, address, photo, etc., and is also used to prevent forgery. "The 'demagnetization' of the second-generation ID card and the demagnetization of bank cards are two concepts. There is a copper coil in the second-generation ID card, on which the reading of information depends, and if the copper coil is damaged, the data cannot be read out." She said that if the ID card is folded, chipped, or placed in an environment with high temperatures and strong magnetic fields, the built-in chip will be magnetized, resulting in the loss of information.
"The information stored in the ID card cannot be repaired after it is lost, and you need to go to the police station where your household registration is located to reapply for it." It is recommended that the usual storage of second-generation ID cards, to avoid bending, twisting, try not to put together with cell phones and metal objects, but also to avoid strong magnetic field radiation and high temperature.