It's RFID communication with a smart card. The bank would have to transmit keys to your computer to be able to interface with it, which they probably won't want to do for security reasons.
It's RFID communication with a smart card. The bank would have to transmit keys to your computer to be able to interface with it, which they probably won't want to do for security reasons.
Your computer doesn't need to have any keys to do this. The card has a secret key, but it doesn't give it to the reader, it just responds to the challenge. The challenge often comes from a point of sale terminal, but it could just as easily come from the bank's web servers, and it isn't really a secret.
The only thing which resembles a secret here is the response from the card, which is the thing anyone can get regardless when have the card. Also, the entire premise of the card is that the attacker doesn't have it, so if they do then you've already lost that part of the game.