The Fuel & Charge card has been designed to minimise risk of copying, as it is not obvious that the card is valuable: the card shows only an e-icon (a green vehicle) to indicate that it is a charge card.
This is an advantage over other cards on the market. However, if you suspect that your card has been lost or stolen, please call the customer centre as soon as possible and request that the card is blocked. You can also use an NFC/RFID card cover/secured wallet to protect the RFID number from being copied.