Hello,
as you might know I am currently working on offline application.
(https://github.com/privacyidea/privacyidea/issues/108)
The idea is to have a PAM module
(https://github.com/privacyidea/privacyidea/tree/master/authmodules/pam-python)
cache future OTP values.
The latest commit contains a short documentation/hint
You are welcome to comment on this.
THanks a lot and kind regards
Cornelius