Originally posted by MitchMan
Thanks, elbeau.
Let me see if I understand. It sounds as though the credit card's RFID chip is capable of being empowered with electromagnetic energy
(electromagnetic field) from an external source (such as an RFID reader) and then it, the credit card's RFID chip, then broadcasts electromagnetic
energy waves that contain the credit card info.
It sounds like the credit card has to be close enough to the reader to be within the readers energizing field. Right? Also, once the credit card
RFID chip is energized and broadcasting, such broadcasted info can be picked up by an adequately "sensitive' antenna that could be far away, right?
All this, if I am correct, sounds like the RFID reader needs to be close to the credit card, but the antenna picking up the info
broadcast by the energized credit card RFID chip can be much farther away from the credit card than the reader, right?
Lastly, it sounds like the RFID reader can be as far away from the RFID credit card as 12 feet.
Man, if I am right about this, that is absolutely and totally unacceptable.
elbeau, the method you described to provide security by employing the "token" text (or "key") coupled with encryption should be the only way this
thing is implemented. Seems similar to the way that networks and password routines work. |