No PIN asked for with libpam-poldi

Hi,

I'm trying to use my Yubikey with libpam-poldi to sudo on a Ubuntu based 
OS (Tuxedo OS).

My card is working:

$ gpg --card-status

Reader ...........: Yubico YubiKey OTP FIDO CCID 00 00
Application ID ...: Dxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Application type .: OpenPGP
Version ..........: 3.4
Manufacturer .....: Yubico
[...]

When using pass password manager, I am asked for a PIN to unlock the 
card, touch it and I get my password unencrypted.
It also works with browserpass Firefox extension.

So far so good.

Now, I have setup libpam-poldi:
- created the /etc/poldi/localdb/users and linked my user with the 
Application ID
- created the /etc/poldi/localdb/keys/MyAppID file, with

sudo sh -c 'gpg-connect-agent "/datafile 
/etc/poldi/localdb/keys/MyAppID" "SCD READKEY --advanced OPENPGP.3" /bye'

My .gnupg/scdaemon.conf file looks like this:
disable-ccid

My /etc/pam.d/sudo and /etc/pam.d/sudo-i have auth sufficient pam_poldi.so

And finally .gnupg/gpg-agent.conf looks like:
pinentry-program /usr/bin/pinentry-qt
debug-lvel 3
enable-ssh-support
ttyname $GPG_TTY
default-cache-ttl 60
max-cache-ttl 120


Nos, when I try to sudo, I am asked to insert my card, and asked for a 
password, but never for a PIN:

$sudo su
Insert authentication card for user `franck'
Trying authentication as user `franck'...
[sudo] password for franck:

Journalctl -f shows:
gpg-agent[13666]: scdaemon[13666]: detected reader 'Yubico YubiKey 
OTP+FIDO+CCID 00 00'
gpg-agent[13666]: scdaemon[13666]: detected reader 'Yubico YubiKey 
OTP+FIDO+CCID 00 00'

But I am never given the opportunity to unlock the card...
Any idea to fix or to troubleshoot this ?

Thanks
Franck

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