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Originally posted by Murmoshka
As a researche of such targeting system I confirm:
YES they DO.
Originally posted by CIAGypsy
reply to post by Physic
I'm saying it won't work because the cards which house the chips that hold your private data DO NOT contain a power source. They work by being weakly "powered" by a magnetic field that emits from an RFID reader. Because the only "power" is induced current, it does not have the ability to travel more than a few inches at best. You can buy stronger readers which use a larger magnetic field that can read data from a few feet. However, beyond that, it just simply doesn't work without a gigantic, powerful magnetic field. Any magnetic field of that sort would knock out the power grid... I work with this technology every day and have for years. What I am telling you is publicly available if you do simple research on RFID. You will find that your theory just isn't feasible.
Both iCLASS and MIFARE are “contactless smart cards” by definition. When either of the cards is read in their normal functional mode, there is an additional security step. The reader and the card go through a complex mathematic process where they compare security keys carried within both the card and reader. This process is called Mutual Authentication. It ensures that the communication between the card and reader can never be copied and repeated back to the reader. If the key in the reader matches the key in the card, then the reader will extract the binary data format from the card and send it on to the controller. If the keys DO NOT match, the mutual authentication process is terminated and the reader shows no reaction at all.