Jun 11, 2018 · I started using the card after a couple of hours of purchasing it. It only takes a few hours for the amount to get loaded on the card. Just ensure that you have received the PIN and signed on the signature panel at the back of the card. To ensure How to Login and Check HDFC Forex Card balance? [Step by ... Details about HDFC Forex Card: HDFC Forex Card is a prepaid travel card that you can load with foreign currency of your choice. You can use a Forex Card just like any Credit or Debit Card to pay expenses in the local currency abroad. You can make payments just by swiping or waving the card.