Product profile
The body is provided with a conducting layer sleeve, so that the card is placed in the accommodating cavity and the external conductor layer can be bank card isolation, make NFC even close to the contactless RFID card protection card sets of cards also cannot access card information, effectively guarantee the safety of information.
Design principle
RFID security card is designed based on the principle of Faraday cage, NFC/RFID communication is a kind of radio communication technology, the signal transmission using the electromagnetic alternating field, the electromagnetic field propagation in conformity with the principle of protection of Faraday cage card surface will be "transparent" to another face card sets, and was detected in the protection card set the accommodating cavity to any alternating electromagnetic field (as in accordance with the principle of Faraday cage, internal potential everywhere equal, no mobile charge, therefore, electromagnetic communication card) set of internal NFC chip will not respond to external.
Security card sleeve NFC chip can not be absorbed from the NFC card reader device of power transmission, so there is no charge to start the electronic structure of the internal power, which makes the NFC equipment near the door even if card sets in IC bank cards are unable to obtain bank card information, effectively ensure the safety of your bank card information
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