Where can I find the UID on my RFID card?

Where you will find the UID depends on the origin of your RFID card. For RFID cards that you have ordered through BGL Charge, the UID is printed on the back.

For your own RFID cards from other providers, the easiest way to read the UID is with an NFC reader app, such as "NFC Tools", which you can find in the popular app stores for smartphones.

The UID is a technical string of characters that you enter in the Unique card identifier (UID) field without spaces. The Card number next to it, by contrast, you can choose freely.