Response from: Chris Kapsambelis

To those of you ready to invest and/or to buy an RFID Guardian, my advice is to save your money. As I see it, the device suffers from two major flaws.

If one believes the hype of RFID and “The Internet of Things”, there will be an RFID chip in everything, and there will be RFID readers everywhere. In this scenario the RFID Guardian will be in almost constant warning mode forcing the user to turn it off to stop the incessant beeping.

Assuming that one can find a deserted highway, or such similar spot, free of RFID readers, and someone, armed with one, approached with the intention of stealing all your RFID data, and your RFID Guardian began to beep like crazy, how would you stop the RFID thief from stealing your data? You would have to fight him to the death and destroy his RFID reader. Not a very comforting solution for most of us.

A more useful device would be an RFID Jammer. This device, the size of a fountain pen, could act as a shield by emitting a constant RF jamming signal capable of preventing any RFID reader within a six foot radius from reading any of your RFID data. Now there is a device worth having.

Response from: Patent-Monkey

To add to Chris, I see in US Patent 6,970,070 www.patentmonkey.com/PM/PatentID/6970070.aspx that RSA has an issued patent on a "a blocker device may comprise a mobile telephone, a portable computer, a personal digital assistant (PDA), a hardware-based authentication token such as an RSA SecurID.TM. token commercially available from RSA Security Inc..."

Response from: andrew

it doesn't just beep.

it jams tag access for your tags.

research?