In real life, we all have all kinds of cards, some are membership cards, some are RFID blocking cards, which store the amount, especially the card that stores the amount, which is quite important.
The main function of the shielding card is to shield the signal of the card reader, so that the card reader cannot read the card, effectively prevent them from stealing information, and ensure the security of the information in the card.
This card is no different from ours. For example, if it is made into a standard card, it will be the same size as our bank card, and the pattern can be customized and printed. It can be disguised as a normal card. It can be a membership card. It is an access control card, but its inner core is really powerful, because the function of the chip plays a protective role.
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