clamshell card
Custom clamshell card with Matte, Die-cut hole  Blank/White Card from China clamshell card factory,clamshell card manufactory,clamshell card supplier.clamshell card is one type of Blank/White Card, it's Consists of the chip, the sensor antenna,it's Packaged in a standard ABS material card, No exposed parts of the card.the clamshell card  Reading and writing process, ibetweencoupled resonant circuit with the reader via radio waves or contact contact To complete the read and write operations. theclamshell card is a non-powered,When the reader read and write to the card reader signals superimposed on the compositionconsists of two parts: one part is a power signal, the signal received by the card, rather than their own L / C resonance, producingan instant energy tosupply chips work. The other part is a combination of data signals, the command chip to complete themodification of data, storage and return it to the reader, to complete a read or write operation. The data on the card can save more than 10 years long,it's use to Shopping malls, hotels, clubs, cinemas, bars, beauty salons, video games, etc...

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