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Alex Rivera
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I'm developing a system including NFC tags and Android phone , using unique ID of NFC tags . But don't know what is the differences between 4 types NFC tag . I've found this : "NFC-compatible tags can be of the following technologies/standards and each of them has a different notion of ID: NFC Tag1 : Topaz/Jewel NFC Tag2 : Mifare UL (ISO14443A-3) NFC Tag3 : JIS X 6319-4 (FeliCa) NFC Tag4 : ISO14443-4A or ISO14443-4B tag There is also an unofficial support of the Mifare Classic cards as NFC tags. And each of them define some identification number. Topaz/jewel has a 4-byte ID Mifare UL has a 7-byte UID Mifare Classic has a 4 or 7-byte UID FeliCa has a 8-byte ID ISO14443-4A has a 4, 7 or 11-byte UID ISO14443-4B has a 4-byte PUPI Do some tests with nfc-list, you'll see what comes out depending on the used tag. And for code, see code of nfc-list.c how IDs are retrieved and displayed." Is that true and is thera anything else ? Can you help me ?
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