Do you have an iPhone? Then you need to contact the company that delivered your charge card. Ask for the UID number.

If you have an NFC-capable Android smartphone, you can find out the RFID code of your charge card yourself. How? Download the NFC Reader app from the Google Play Store:

  1. Open the app;

  2. Press “Scan a tag”;

  3. Place the charge card you want to read at the back of the phone;

  4. Wait for the phone to read the pass;

  5. You can recognize the RFID code by the label 'ID (dec)'.

Voila! There's your RFID!

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