OTPW is a one-time password authentication module
for POSIX systems. Its security concept is
optimized for users who prefer printed paper
password lists over portable electronics. In this
mode of operation, it provides better protection
against some attacks than other schemes (e.g.
S/KEY). It provides a library that can be linked
with any application that performs interactive
logins. A PAM wrapper is included for simple
installation under Linux.
