RFID technology highly flawed?

Could a cell phone jammer or a cell phone jammer tuned to the RFID frequency jam it from transmitting data?

3 responses on “RFID technology highly flawed?

  1. amansscientiae

    Some, but not all. There are dozens of technologies and implementations out there. Unless you know what you are up against, you will not be able to reliably jam the scanner. Not only that… a well designed system can easily detect YOU as the source of an interference and ring an alarm.

    🙂

  2. Warren W- a Mormon engineer

    For RFID to work on cell phone frequencies would be a gross lack of due diligence on the part of RFID engineers. I don’t think so!

  3. Tex T

    No, probably not. But covering the RFID in tinfoil generally does the trick.

    Many RFID are passive in that the query frequency powers an inductor that provides the power for the RFID to send the signal. Generally the reader needs to be within a meter or two. Probably one could build a transmitter that would send a false signal to the reader more powerful than the RFID’s with a false RFID code, but you would first need to break the specific authentication and crypto used by that set of RFIDs.

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