Protocols and Standards
What does RFID (Radio Frequency Identification) mean?
Updated March 2026
Explanation
RFID cards and key fobs are physical tokens that you tap against a reader on the charger to start and stop a charging session. Many European charging networks provide RFID cards to their subscribers, and it remains one of the most reliable ways to start a charge because it does not require a phone, internet connection, or app.
When you tap your RFID card on the charger's reader (usually marked with a contactless symbol or the word RFID), the charger identifies your account, authorizes the session, and unlocks the connector. You tap again to stop the session. The reader is typically on the front of the charger, sometimes near the screen.
RFID cards work through eRoaming, so one card can often work across multiple networks. However, not every card works at every charger. Before relying solely on an RFID card for a road trip, check which networks your card provider supports. Having a backup authentication method (a charging app or contactless payment) is wise.
Based on data from Open Charge Alliance.
Where you'll see this
- On the charger screen
Common confusion
Some people think RFID and contactless payment (tap to pay with a bank card) are the same thing. They use similar technology, but an RFID charging card identifies your charging account. A contactless bank card processes a direct payment.
Example
A Chargemap Pass RFID card works at over 500,000 charge points across Europe through eRoaming agreements with hundreds of CPOs.
Related terms
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