at the moment i'm frequently in nice sitzerland. how often do LH change the PIN code for the senator lounge? i prefer to checkin at the automat and this one naturally don't print out a PIN (hoping the automat works in zurich).

so do they change the PIN weekly or daily?

BTW: this is the first lounge i ever saw without staff and with a PIN, are there any other LH lounges worldwide where i have to take care to get a PIN at checkin or is this a swiss speciality?