Can I degausse my ID card and bank card
4hw.com.cn: many friends often put the bank card ID card together. As time goes by, they worry that the chip magnetism on the ID card will be eliminated. Will the ID card be demagnetized? Let's have a look!
Will the ID card demagnetize?
A generation of ID card without magnetism, of course, can not be eliminated.
The second generation ID card does have a chip, but it still won't degausse. Even with the bank card with the chip put together for a long time will not degaussing!
Why? Because of the contactless IC technology used in the second generation ID card. The fixed frequency electromagnetic wave from the card reader continuously charges the capacitor through the circuit in the ID card (this process can be imagined as charging the battery). When the voltage reaches 2V, it starts to provide energy to another part of the circuit for data communication. So there is no magnetism in the ID card. How to demagnetize? Some so-called demagnetization claims, one part is that the antenna itself has problems or breaks in the use process (which is too careless), the other part is the chip and other problems (when the strong magnetism changes or the strong current changes (note, it needs to be strong), because of the electromagnetic induction problem, it may cause the current to be too large, leading to the chip damage. )
Once it is found that the ID card cannot read information on the card reader, it can be reissued by the public security organ.
How to tell if it's a contactless IC card? It's very simple. You can use a cell phone as well as a flashlight.
Here is the chip location of the ID card: here is a small part of the coil of the ID card (if it is an ID card, the coil will be much wider than this):
General knowledge of ID card information
The second generation ID card does not need to be connected to the Internet in normal use. The information is stored in the chip and can be read directly through the ID card reader. This means that whether the ID card is the information that the cardholder can only rely on the ID card. At present, there is only one kind of head portrait in the first generation card, which has poor recognition. So there are hidden dangers. The second generation ID card itself has a reserved area, which can record the electronic fingerprint information into the ID card, so that in some important occasions (such as bank card opening), it can prove whether the cardholder is the ID card itself.
Some people will ask, why not do networking? But think about it, many places do not have networking environment, or poor network speed will lead to the inability to use. In addition, there are more people who use ID card at the same time in China than those who use 12306 at the same time. They use it to buy car tickets, use it to surf the Internet, use it to see a doctor, use it to open a house, etc. If all operations are verified online, how to deal with such high concurrency is a problem.
As for why we only consider entering electronic fingerprints now, guess that we have considered the overall cost before. After all, fingerprint recognition technology in 2004 was not at the same level in terms of cost or hardware maturity.