[android-developers] NFC Calypso card not detected by NFC

I would like to communicate to Calypso cards using NFC.
Calypso cards are used in public transports. Here is the official
website : http://www.calypsonet-asso.org/index.php
Calypso cards are used in Paris (Pass Navigo), Brussel (Mobib),
Nice....
The calypso technology is based on the contactless ISO 14443-B.
Calypso technology is supposed to be compiliant with 14443-B.
But the card is never dected either by my program or programs from the
Market (NFC TagInfo which is supposed to detect 14443-B (NfcB) ).
Sometimes the card is detected as NfcV (ISO 15693 aka Vincinity) for a
very short time, but the program is unable to communicate with the
card.
My phone is the Nexus S running 2.3.4.
So I don't know what to do. Please give me some directions to get the
card detected.
Regards.

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