產品說明0
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Adafruit 13.56MHz RFID/NFC Clear Keychain Fob 透明鑰匙扣 - Classic 1K (ada0363)
DESCRIPTION
This is a blank 13.56MHz RFID/NFC keychain fob - often used for keys but also an easy way to tag something. The tag contains a small RFID chip and an antenna, and is passively powered by the reader/writer when placed a couple inches away.
These can be read by almost any 13.56MHz RFID/NFC reader but make sure it can handle ISO/IEC 14443 Type A cards as there are a few other encoding standards (like FeLica) They are tested and work great with both our PN532 NFC/RFID breakout board and Adafruit NFC/RFID Shield for Arduino!
These chips can be written to & store up to 1 KB of data in writable EEPROM divided into banks, and can handle over 100,000 re-writes. You can use our PN532 NFC/RFID breakout board or Adafruit NFC/RFID Shield for Arduino to read and write data to the EEPROM inside the tag. There is also a permanent 4-byte ID burned into the chip that you can use to identify one tag from another - the ID number cannot be changed.
These use a ISO/IEC 14443 Type A chipset, which used to be the 'classic' NFC chipset. In ~2014, the NFC forum decided not to support this chipset anymore, so newer phones do not support it. This only matters if you're trying to use this tag with a phone/tablet.
TECHNICAL DETAILS
RFID chip specification:
- 1 KiloByte (8 KiloBit) non-volatile EEPROM storage
- Built in encryption engine with 48-bit key
- 4 Byte unique identifier burned into the chip
- 13.56 MHz frequency
Tag specification:
- 30mm x 25mm x 6mm / 1.2" x 1" x 0.2"
- Weight: 4.3g
- Works about 2" away from reader
Adafruit NFC/RFID on Raspberry Pi
https://learn.adafruit.com/adafruit-nfc-rfid-on-raspberry-pi
Collin's Lab: RFID
https://learn.adafruit.com/collins-lab-rfid
Adafruit PN532 RFID/NFC Breakout and Shield
https://learn.adafruit.com/adafruit-pn532-rfid-nfc
