Re: [76attendees] RFID

Tero Kivinen <> Wed, 11 November 2009 04:20 UTC

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Date: Wed, 11 Nov 2009 06:21:13 +0200
From: Tero Kivinen <>
To: "Rajiv Asati (rajiva)" <>
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Cc: Scott Brim <>,
Subject: Re: [76attendees] RFID
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Rajiv Asati (rajiva) writes:
> I agree. However, I noticed few folks trying to make the RFID reader by
> placing the card on the iPod instead of the reader, and getting
> frustrated that it wasn't working. This shouldn't be the reader's fault.

Other problem people often have that they go back to the same reader
which has already read their card 10 minutes before and which has not
read any other card in between (the other rfid card was read on the
other reader). What happens there is that the reader notices that this
is same card than last time, and ignores the card.

For user this just looks like the card is not working. What they need
to do is to use the wipe card (or any other card) and read that in and
then reread their own card.

It would be nice if the reader could be made so it does not remember
the last read card forever, but would forget it after 60 seconds or

This same problem most often hit the chairs, as almost nobody else
uses their reader than them...