Looks like the Helsinki area transport authority (YTV) is already busily upgrading their ticket systems: I've now several times managed to not get my card read, because whenever I flash the card wallet, it just shows the text "*MIFARE*". I need to take the card out of the wallet, and show only that to the reader.
The explanation is that as an old RFID geek I have an Oyster card for London metro (which is a Mifare Classic card), a FeliCa card for Tokyo metro (which is sort similar to Mifare, except it's much more versatile and actually has some non-trivial security), and a bunch of other NFC cards. Previously, this has not been a problem, since they usually all live together nicely (and I like to see when they break), but in this case, it looks like the YTV ticket readers just simply cannot fathom that a person might have some other cards other than the YTV cards.
Since Mifare is a pretty common card (there are what, 500 million of them out there, mostly in public transit and access control - several cities in Finland do use Mifare as well), I would imagine that I'm not the only one who is stymied by the text "*MIFARE*" on the reader. Just putting a Tampere transport card in the same wallet with the Helsinki transport card would do the trick. However, I can at least interpret it - because I happen to have several years of training in the area. I just hope that this is just testing, and that the YTV designers are going to build in a nicer error display in reality. Though, they do not exactly have a great track record in desiging usable interfaces, as all the people who live in the capital area know...
(I will need to check whether this happens for all ISO 14443 cards, though.)
In short: if the reader says "*MIFARE*" to you, just make sure you don't have any other cards nearby. Or your keys, as they might contain Mifare too (heck, I have a wrist watch which contains a Mifare tag...)
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|"Main_blogentry_010908_1" last changed on 01-Sep-2008 15:15:21 EEST by JanneJalkanen.|