"inverse" RFId

antranig at caret.cam.ac.uk antranig at caret.cam.ac.uk
Thu Apr 30 19:24:37 UTC 2009

Thanks Clayton, that's pretty interesting. I hadn't considered the
possibilities that a "live" inverse RFID system might offer. That is,
one exploiting a "round the back" (cookies, etc.) connection to the
web device held by the tag wearer.

Quoting Clayton H Lewis <Clayton.Lewis at Colorado.EDU>:

> having belatedly looked at the page on in-museum services, I want to
> promote the "inverse" RFId  approach that's mentioned within the RFId
> section...  the idea being that visitors, not stuff in the museum,
> get tagged
> seems as if this has powerful advantages with respect to all of the
> alternatives besides image recognition
> in particular, visitors don't have to be assumed to bring any device,
> to get some benefit (eg a map of their visit for access later)
> if the visitor does have a device, it only has to have web access to
> deliver useful stuff, if one arranges a match up of visitor's device
> to visitor's tag (a possible scenario: on the way into the museum,
> wearing your rfid tag, you pass through an entry big enough only for
> you... on your phone you go to a website that knows which tag is in
> the entry at that moment, and your phone thereby picks up what your
> tag is... thereafter the website content is targeted to you based on
> the location of your tag)
> seems to me all of the alternatives, including image recognition,
> make considerably heavier tech demands on what visitors have to have
> Clayton Lewis
> Professor of Computer Science
> Scientist in Residence, Coleman Institute for Cognitive Disabilities
> University of Colorado
> http://www.cs.colorado.edu/~clayton

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